J-PARC
ANNUALREPORT
2OO8
F i r s t

J A PA N P R O T O N A C C E L E R AT O R R E S E A R C H C O M P L E X

I s s u eEditors
Toshiya Otomo, Materials and Life Science Division, J-PARC Center
Hiroshi Takada, Materials and Life Science Division, J-PARC Center

High Energy Accelerator Research Organization
Japan Atomic Energy Agency
J-PARC Center
2-4 Shirakata Shirane, Tokai-mura, Naka-gun, Ibaraki, 319-1195, Japan
J-PARC Center Web Page
http://j-parc.jp

J-PARC Annual Report 2008
Contents
Preface… …………………………………………………………………………………………………………

2

Accelerators… ……………………………………………………………………………………………………

7

LINAC… ……………………………………………………………………………………………………   10RCS… ……………………………………………………………………………………………………… 12
MR… ……………………………………………………………………………………………………… 14
Materials and Life Science Experimental Facility… ……………………………………………………………… 15
Neutron Source… ………………………………………………………………………………………… 17
Birth of pulsed neutrons in J-PARC… ……………………………………………………………………… 19
Successful extraction of the first muon Beam… …………………………………………………………… 20
Neutron instruments… …………………………………………………………………………………… 21
Muon science… …………………………………………………………………………………………… 24
Nuclear and Particle Physics Division… ………………………………………………………………………… 25
Hadron Experimental Hall… ……………………………………………………………………………… 26
T2K experiment… ………………………………………………………………………………………… 29
Cryogenic Section… ……………………………………………………………………………………………… 33
Information System Section… …………………………………………………………………………………… 37
Transmutation Section… ………………………………………………………………………………………… 41
Safety Division… ………………………………………………………………………………………………… 45
Users Office … …………………………………………………………………………………………………… 47
User Program… …………………………………………………………………………………………………… 51
J-PARC Organization and Committees… ………………………………………………………………………… 55
Events ……………………………………………………………………………………………………………… 61
Publications… …………………………………………………………………………………………………… 71

Preface     J-PARC Annual Report 20082

PrefaceThis is the first Annual Report of J-PARC.
J-PARC is a joint project between two organizations, the Japan Atomic Energy Agency (JAEA) and the High Energy Accelerator Research Organization (KEK).  J-PARC stands
for Japan Proton Accelerator Research Complex and it is a new and exciting accelerator
research facility located in Japan.  It uses MW-class high power proton beams at both 3
GeV and 50 GeV.  The construction budget was allocated on April 1 of 2001.  Since then,the construction has been proceeding smoothly in both the accelerators and the experimental halls.  Finally, in the spring of 2009 (end of Japan fiscal year 2008 ) the Phase 1
project was completed after 8 years of construction.
The main purpose of J-PARC is to use various types of secondary particle beams(neutrons, muons, kaons, neutrinos, etc.) that are generated in proton-nucleus reactions.  
Through the use of these secondary particle beams, we will attain major scientific goals
in three fields: a) nuclear-particle physics, b) materials and life sciences, and c) later, inPhase 2, research and development for nuclear transmutation.  The anticipated goal of
the proton current is 1 MW. From 2008 four types of beams have been obtained exactly
on schedule: neutron beams (May, 2008), muon beams (September, 2008), kaon beams(February, 2009) and neutrino beams (April, 2009).  Thus our facilities became fully operational and now can be used by researchers.
We expect J-PARC to become one of the most important accelerator facilities in
the world for the 21st century’s sciences.  Since three major regions in the world (North
America, Europe and Asian/Oceanic Area) will have major scientific centers with highpower proton accelerators, we would like to create a strong research center in the Asian/
Oceanic region.  Many non-Japanese scientists have already started to use this facility.
From Japan fiscal year 2009 we plan to strengthen the accelerator power to 1 MW.  
We already started Linac construction to achieve 400 MeV.  Also, we plan to make special
effort on creating mechanisms to provide access to J-PARC to international users, in addition to expanding the industrial use of J-PARC, the lodging capabilities, the Phase 2
projects, etc.

Shoji Nagamiya
Director of the J-PARC Center

J-PARC Annual Report 2008     Overview

3

Overview

Yujiro Ikeda and Hitoshi Kobayashi

The year of 2008 was the most important period in the J-PARC projectfrom various aspects in terms of accelerator development, user facility completion, secondary particle production,
their performance demonstration, etc.
First of all, the primary goal of the facility construction was realized with aseries of the beam production at eachtarget in the four facilities, i.e., neutron
at Materials and Life Science Experimental Facility (MLF), muon at MLF, Kmeson at Hadron Experimental Hall  and neutrino at Neutrino Facility.  They
were definitely co-memorable events.  
Here, we like to overview the most significant events in 2008.
The fiscal year 2008 started withthe 3-GeV Rapid Cycling Synchrotron(RCS) beam commissioning. Linac provided stable proton beam to RCS andfinally the 3 GeV proton was extracted
to the MLF in beginning of May 2008.
The victory in the advanced pulse
neutron source facility construction
was confirmed with the first neutron
beam observation at the very first proton pulse injection from RCS on May 30,
2008.  The instance was celebrated theneutron team for their achievement tobe memorized forever in the J-PARC
history. It is worth to note that rightafter the event, the world record in thepulse resolution was demonstrated in
the super-high resolution powder diffractometer, highlighting the high-performance of the J-PARC pulse neutron
source design.
In September 26, 2008, we had apleasant moment with the first muon
beam production.  It was excited time

when the muon beam was clearly
identified.  We had confirmed the facility’s ability in terms of beam intensity
at MW power to be the world highest
muon source.
On December 23, 2008, the first proton beam was accelerated from 3 GeV to
30 GeV in Main Ring (MR), the destinedenergy of the first phase of the project,and it was extracted to the abort beamline by a fast extraction system.
In January 2009, Hadron experimental hall, which uses a slow extraction system, was finally ready for beam.
The first beam was injected on January
27, although it was very weak signal,
but the real proton was injected to theNi target.  The first clear observation of
K-meson was reported on February 18,
2009.

J-PARC Construction Schedule
Year

Iteme

JFY2001 JFY2002 JFY2003 JFY2004 JFY2005 JFY2006 JFY2007 JFY2008
E Power Feed

Beam Commissioning

Acc. Inst
Building Design

Linac

Building Construction

Equipment Design

Equipment Drawing, Fabrication, Installation

Building Design

3GeV RCS

Beam

Building Construction

Equipment Design

Equipment Drawing, Fabrication, Installation

Building Design

50GeV MRBeam

Building Construction
Equipment Drawing, Fabrication, Installation

Building Design

MLF

Equipment Design(Materials & Life)

Building Design

HadronBeam

Building Construction
Equipment Drawing, Fabrication, Installation

Beam

Building Construction
Equipment Drawing, Fabrication, Installation

Building Design

Neutrino

2009~

Operationa

Beam

Building Construction
Equipment Drawing, Fabrication, Installation

Beam

DesignInfrastructure
Salt Farm Assets

Drawing, Fabrication, Installation

Drawing, Fabrication, Installation▲

Construction
Start

▲

▲

Time when thisschedule was created(J-PARC Center started)

Start of Neutron &Muon User Programs

Overview     J-PARC Annual Report 2008

4
In April 23, 2009, the proton beam was injected on the neutrino production target through afast extraction system in MR.  The neutrino was
identified by the muon monitor located downstream from the target. It was, then, the most historical day as the all of J-PARC production targets
received protons, resulting in the completion of
the facility construction.
Along with the facility hardware, the firstuser program started at the MLF on December
23, 2008.  At that moment, the beam power was
expected to be low as much as 20 kW at most,which was 1/50 of the goal of 1 MW.  However,
Ground-breaking ceremony at J-PARC site on June 6, 2002.

First beam acceleration to 181 MeV at LINAC on January 24, 2007.

First beam acceleration to 3 GeV at RCS on October 31, 2007.

Birth of pulsed neutron beam through the spallation neutron source First muon beam extraction from muon production target at MLF on
at MLF on May 30, 2008.
September 26, 2008.

J-PARC Annual Report 2008     Overview

5
we received many proposals even though thepower was low, The start of first J-PARC neutron
and muon user program stimulated users fromacademia to industrial applications.
Concerning the accelerator operation at thevery beginning, we have struggled with instability of the radio frequency quadrupole (RFQ),
which made limited the beam power less than 20
kW.  
Nevertheless, 2008 was glorious days in
J-PARC history. We could define 2008 as the commissioning year and the firm step toward the fullscale user program in 2009.
Ceremony for the start of J-PARC Center on August 8, 2006.

First beam circulation at 3 GeV in Main Ring on May 24, 2008.

First beam acceleration to 30 GeV at Main Ring on December, 2008.

First beam extraction at hadron experimental hall on January 27, First neutrino beam production on April 23, 2009.
2009.

Accelerators

Accelerators     J-PARC Annual Report 2008

8

Overview
The J-PARC accelerators consist of a 181-MeV linac (LINAC) which will be upgraded to 400 MeV in 2012, a 3-GeV rapid
cycling synchrotron (RCS) and a 50-GeV synchrotron (MR).

Main operational goals

LINAC
RCS
MR

Energy(GeV)First Step
Power
(kW)

Repetition Rate
(Hz)

0.181
3
30

(30 mA)300 (→600)
300

25
25
~ 0.3

Energy(GeV)Second Step
Power
(kW)

Repetition Rate
(Hz)

0.4
3
30

(50 mA)
1000
750

25 (50)25~ 0.47The maximum energy of MR is now set at 30 GeV to obtain maximum performance for a high intensity proton source
and also to mitigate the technical issues concerning stable operation due to huge excitation currents.
Since the beam commissioning of LINAC started in November 2006, we have achieved the following main milestones:
January 2007
181 MeV beam from LINAC
October 2007
3 GeV beam from RCS
May 2008
3 GeV beam stored at the injection porch in MR
December 2008 Beam acceleration to 30 GeV in MR			Started the user program of MLF
January 2009
Beam extraction to the hadron target at the 30 GeV flat top in MR
The progress in fiscal year 2008 is summarized in the following table and figure.  The beam intensity and beam size of
RCS is changed pulse-by-pulse according to the beam destination: MLF or MR.
The user program of MLF started from December with 4 kW of beam power and the planned power of 100 kW wasreached in February.  But the discharge problem of a radio frequency quadrupole (RFQ) in LINAC described bellow suspended the stable operation for user program.

Month
Run Cycle

4

5

6

#16

#17

7

8

9

10

#18

#19

11

12

1

2

#20

#21

#22

3

RFQ Aging
MLF : User Run★
5/30
MR 3 GeV
Neutron @ MLF

MLF High Power
Demonstration★
9/24
MLF 4 kW◎
9/18 : 210 kW / 70sec
eq. 352 kW / pulse★
12/23
MR 30 GeV★
★
1/27 2/19
Hadron MLF
100 kW◎
12/9 : 100 kW
Constant Operation

Operation schedule and typical achievements in fiscal year 2008.

J-PARC Annual Report 2008     Accelerators

9

Materials and Life Science
Experimental Facility (MLF)

Hadron Experimental Hall

Nuclear Transmutation
Experimental Facility(Phase II)

Neutrino to
Kamiokande

AC

LIN

3 GeV Rapid Cycling
Synchrotron (RCS)

50 GeV Synchrotron (MR)

Bird eye’s view of the J-PARC site.

10000

Proposed
Under construcon
In operaon

ESS
Materials and
SNS Life Science

PSI

1000

Three Research Areas at J-PARC(CW)

Materials & Life Sciences at 3 Gev
Nuclear & Parcle Physics at 50 Gev
R&D toward Transmutaon at 0.6 Gev

J-PARC 3 GeV
ISIS

IPNS
10

J-PARC 50 GeV
AGS

CERN-PS
KEK12 GeV PS

0.1

Proton (p)Nuclear andPar cle Physics

KEK-500MeV
Booster
1

Muon (µ)
Pion (π)

Pow

Current (µA)

LAMPF

er

TRIUMF100ǸψǴ ǵ

Neutrino (ν)

Neutron (n)FNAL-MI

Kaon (K)

SPS
U70

1MW

Proton (p)3 Gev, 50 Gev

Nuclear
Transmutaon

Target nucleus

An Proton (p)Tevatron
0.1MW

0.01
0.1

1

10

100

1000

Neutron (n)10000

Energy (GeV)
Power map of worldwide proton accelerators as of 2001.

Secondary beam produced with high-intensity proton beam.

Accelerators     J-PARC Annual Report 2008

10

LINAC

From RFQ to DTL and SDTL.

BL to RCS.  One SDL unit is used as debuncher until
ACS is installed.

250m(3.1m)

Ion
SourceRFQ
50 keV(3.0m)(27.1m)(91.2m)DTL

SDTL

3 MeV (324MHz) 50.1 MeV

Drift tube linac.

(15.1m)(109.3m)

ACS

190.8 MeV (972MHz)

Klystron gallery.

J-PARC Annual Report 2008     Accelerators

11
The linac design is shown in the figure.  The volume-production type of anegative hydrogen ion source is used
for producing a peak current of 30 mA(which is increased to 50 mA in the second step) with a pulse length of 0.5 ms
and a repetition rate of 25 Hz.  The beam

is extracted at 50 keV to the 324-MHz
radio-frequency quadrupole (RFQ) linac
and accelerated to 3 MeV.  Then, thebeam is accelerated through the drift
tube linac (DTL ) to 50 MeV, through theseparated-type drift tube linac (SDTL) to
181 MeV, through the annular-ring cou-

pled structure (ACS) linac to 400 MeV
and through the super-conducting cavity (SCC) linac to 600 MeV according to
the velocity increases.  Here, SCC and
ADS (accelerator driven transmutation
system)   are shifted to Phase II.   RFQ,
DTL and SDTL are operated with thesame frequency by twenty 3-MW klystrons, which were newly developed bya klystron vendor for J-PARC in collaboration with the J-PARC accelerator team.
Currently the 181-MeV beam is
injected to RCS and ACS is under construction and is expected to be in operation from 2012.  The beam for RCS
is chopped in order to avoid beam loss
due to spilling from the RF bucket of
RCS at injection.

LINAC beam merges into RCS.

To RCS

LINAC building seen from the downstream.

(58m)

SCC
400 MeVTo
ADS
600 MeV

From LINAC to RCS.

Accelerators     J-PARC Annual Report 2008

12

RCS
The negative hydrogen beam is
injected through the charge-exchange
foil and is converted to a proton beam.
This injection scheme is free from the
Liouville's theorem, that is, a new beam
can be put in the region of phase space
already occupied by the circulating
beam.  Therefore, in principle, the beam
density can be increased to the spacecharge limit.   To mitigate the spacecharge effect, the injection points inphase space are scanned to enlarge thebeam emittance in both the transverse

and the longitudinal phase space (thisis the so-called “Painting Process").
There were many issues to be resolved in the process of realizing theadvantages of the RCS scheme.  Themost important of them were the following:
1) High accelerating voltage andwide frequency range of the RF acceleration system.
2) Ceramic vacuum chambers against
large eddy current due to the fastchange of the magnetic field.

3) Large aperture magnets for the
beam with large emittances to mitigate the space charge effect.
4) Magnetic field tracking in rapid
cycle.
5) Injection and extraction system forthe high intensity beam with large
emittances.
These issues have been successfully resolved to ensure the current stable
operation of 100 kW.

Present main parameters of RCS

Circumference
Injection Energy
Extraction Energy
Emittance @ Injection
Revolution Frequency        at Injection        at Extraction
Repetition Rate
RF Frequency (MHz)Harmonic Number
Number of RF Cavities
Transition Energy (γ T )Number of Bending Magnet

348.333 m
181 MeV
3 GeV< 324 π mm-mrad.
469.3 kHz
835.9 kHz
25 Hz
(0.938 → 1.67)
2
11 ( → 12)
9.14
24
Large Aperture Quadrupole.

Dipole magnet in combination process.

Magnets in the ring.

J-PARC Annual Report 2008     Accelerators

13

Injection region. The beam comes from the upper-right corner. The charge exchange foil system is located in the middle.
The BL to H0-dump is below to the right.

Extraction region. From left : BL to MLF, BL to MR and RCS ring.

RF acceleration stations.

Extraction kickers.

RCS building.

Accelerators     J-PARC Annual Report 2008

14

MR
There is transition energy in aconventional synchrotron.  When the
beam energy reaches this energy, thelongitudinal focusing disappears in
the first order  and the line density ofthe beam blows up to infinity.   That
process causes instability and results
in a beam loss.  Therefore, the MR Lattice is designed in a way that ensures tohave the imaginary transition energy inorder not to arise the beam instability.  
The MR is the first proton synchrotronthat adopted distinctive beam optics

design, although there already exists as
an electron storage ring for synchrotron
radiation to enlarge tolerances against
beam instability.  The beam is accelerated to 30 GeV in 1.9 sec (2.5 sec at present) and extracted in one turn with thefast kickers to the neutrino production
target, or extracted in the range of asecond with the controlled resonanceof betatron oscillation (the so-called
Slow Extraction) to the hadron experimental facility.

The RF acceleration system is almost the same as that of RCS except
for the following point.  The MA (Magnetic Alloy) cores had been radially cut
with a gap of 10 mm.  Thus the Q value
had been optimized to about 10  in order to reduce the beam loading.  Thesmall change of frequency (1.67 ~ 1.72
MHz) permits a larger Q-value than thatof RCS, still keeping the advantage ofeliminating any frequency tuning system.

Present main parameters of MR

Circumference
Injection Energy
Extraction Energy
Revolution Frequency        at Injection        at Extraction
Repetition Rate
RF Frequency
Harmonic Number
Number of RF Cavities
Transition Energy (γT )Number of BM

1567.5 m
3 GeV
30 GeV
185.7 kHz
191.2 kHz~ 0.3 Hz(1.67 → 1.72) MHz
9
4 ( → 6)31.7 (imaginary)96

Injection region.

Magnets aligned in MR. Blue: Dipole, Yellow: Quadrupole, Green: Sextupole, Orange: Steering.

Fast extraction. Left: to abort dump, middle: toring, right: to neutrino target.

Slow extraction region. Left : to hadron target.

Materials and Life Science
Experimental Facility

Materials and Life Science Experimental Facility     J-PARC Annual Report 200816
In fiscal year 2008, the Materials and Life Science Division achieved two important milestones: it generated
both the very first pulsed neutron beam at the spallation neutron system and the muon beam through themuon production target located at about 30 m upstream from the neutron source, and then advanced to theimplementation of a user program.

Key parameters of MLF
Injection energy

3 GeV

Repetition rate

25 Hz

Neutron source
Target material
Number of moderators
Moderator material
Moderator temperature/pressure
Number of neutron beam ports
Muon production target
Target material
Number of muon beam extraction ports

Mercury
3
Supercritical hydrogen
20K/ 1.5 MPa
23Graphite4

Neutron instruments
Open for user program
Under commissioning/construction

7
4/3

Muon instruments*
Open for user program
Under commissioning

1
1*(* as of the beginning of the user program in fiscal year 2008.)

Beam up rate for user program since
December 2008.  
No. of run
cycle

Scheduled  
Time (h)Up rate
(%)

#20

60

85.4

#21

297

54.6

#22

366

70.0

#23

724

65.1

#24-25

394

75.1

#26

183

84.3

#27

270

86.3

Cumulative proton beam power delivered to neutron and muon production targets at MLF since the beginning of the user program on
December 2008.  The operational beam power ramped to 120kW in the run cycle #27 in 2009, while it was 20 kW in fiscal year 2008.

J-PARC Annual Report 2008     Materials and Life Science Experimental Facility

17

Neutron Source
All of the 108 magnets aligned on
the approximately 300 m long tunnel of the proton beam transport line
(3NBT) which transports the beam
extracted from 3-GeV rapid cycling
synchrotron (RCS) to the neutron production target at Materials and Life Science Experimental Facility (MLF) had
been switched on.  As a matter of fact,
the upstream section branched to thebeam-dump has been operated for accelerator studies.   On the first day ofthe proton beam delivery to the neutron production mercury target at MLF,
eventually, the 3NBT successfully transported the proton beam to the mercury target with the designed tuning
parameters.  The beam transport was
confirmed with nine current transformers (beam intensity monitors) installedin the 3NBT line.  This memorable event
deserves a special praise because it wasachieved through the very first beam
shot extracted from RCS.

During the maintenance period,
the magnets and the beam monitors
were re-aligned with an accuracy of~0.1 mm through careful survey.  Theparameters of the beam optics were
carefully tuned again throughout
the on-beam commissioning.  Consequently, in December 2008, successfultransport of a proton beam with anintensity of 100 kW was achieved without any significant beam loss.

View of proton beam transport line (3NBT).  6 horizontal and 3 vertical bending magnets, 54 quadrupole and 45 steering magnets from theextraction point of RCS to the neutron production mercury target.

The neutron source system consists of the following core components
for providing high intensity and quality
pulsed neutron beams: a mercury circulation loop for target, three supercritical hydrogen moderators surroundedwith an inner bellilium and outer steel
reflector.  It was ready to accept the firstbeam in May, 2008.  It should be notedthat the cryogenic hydrogen circulation system designed to circulate supercritical hydrogen with pressure of
1.5 MPa and temperature of around 20
K (-253ºC) has been successfully operating with the largest flow rate of about
8 m3/h for the first time in Japan.
After the memorable event of producing the very first neutron beam, theneutronic performance data, i.e., spectrum, intensity and pulse shapes, havebeen measured for the three types ofmoderators as an important campaign
to validate the neutronics design.  Themeasured data agreed well with thedesign values, suggesting adequacy ofneutronics design of JSNS.
In the 100 kW beam injection, thetemperature of the flowing mercury
in the target vessel was measured andalmost coincided with the estimatedvalue in the target design.  The pressure waves were measured as welland were analyzed to understand thetime responses of the target vessel.  On
the other hand, the bid for the second
mercury target vessel was awarded toa vendor and the fabrication will becompleted by the end of 2009.  Thenext generation target vessel will beseparated into two parts, a forward anda rear part, to reduce the waste volume
at the target vessel.  The research anddevelopment of a bubbling system
is continuing consistently in order tomitigate the pressure wave on the mercury circulation system.  The SNS teamvisited J-PARC and carried out the offbeam cavitation damage tests by using
MIMTM (electro Magnetic IMpact Testing Machine) mercury loop.
The ancillary systems were functioning in a stable way for the MLF
beam operation even at 100 kW.  Radiation dose levels caused by the residual
radioactivity in the mercury circulation
system at the hot cell were measured
in November.  The maintenance procedures will be reviewed and modified on
the basis of the measured data. Maintenance work for the primary coolingwater piping was also conducted, andmany lessons have been given to re-Materials and Life Science Experimental Facility     J-PARC Annual Report 200818
duce tritium contamination.
We encountered a couple of challenges throughout the yearly operationof the neutron   source components.
One was the problem with the neutron
beam shutter system that occasionally
was not responsive to the open signal
from the shutter switch at the instru-

ment.  We finally resolved the problem
by replacing the controller of the servo motor system due to malfunction
caused by a bug.  The other one was
the failure of the rotor of a hydrogen
pump. This was also repaired at thevendor’s manufacturing facility.
We completed a series of remote-handling tests of the mercury target,
the moderators, the reflector plug andthe proton beam window by using actual componets, although the actual
maintenance work is going to be conducted within the next several years.

Mercury target installed on the target trolley. The target vessel has
triple-walled structure and mercury flows in the target vessel witha flow rate of 41m3/h.

View of upper part of the neutron source station.

Coupled moderator.

Safety box set in the cryogenic hydrogen   components room in
MLF, it contains a hydrogen circulation loop, hydrogen pumps, anaccumulator device and other components.

J-PARC Annual Report 2008     Materials and Life Science Experimental Facility

19

Birth of pulsed neutrons in J-PARC
At 14:25 on May 30th, 2008, thememorable event of the first neutron
being generated was recorded at MLF.
A shot of 3 GeV protons from RCS was
injected to the mercury target at MLF.
A pulsed neutron beam extracted fromthe de-coupled moderator was detected by the Li-glass detectors which wereincorporated in the Current type TimeOf-Flight (CTOF) technique placed in
the beam line of NOBORU, NeutrOn
Beam-line for Observation & Research
Use (an instrument for neutron source

characterization).
The first memorable neutron energy spectral intensity derived from the
CTOF data is shown in the photograph.
The incident proton beam profile recorded by the imaging plate is also
displayed. Right after the event of thefirst neutron production, beams wereintroduced to four instruments consecutively to test the system performance.

achievement of an important J-PARC
landmarks.   The spectrum displayedon the monitor screen confirmed ourachievement as a result of a 7-years
long challenge.  Although the powerof the accelerator was still low, equal
to only 4 kW, that was a calm and convincing departure forward to the JPARC MW pulsed neutron source.  Theendeavors of the MLF neutron team of
JAEA and KEK, were rewarded by thishistorical moment.

That was a very quiet but exciting

Time of flight spectrum of the first neutron beam measured at the NeutrOn Beam-line for Observation & Research Use (BL-10), (left). Proton
beam signal measured by a beam intensity monitor located at the downstream end of the 3NBT line.

Materials and Life Science Experimental Facility     J-PARC Annual Report 2008

20

Successful extraction of the first muon Beam

Eventually at 12:10 pm on September 26, 2008 (JST), the background-freemuon beam was successfully delivered
to the D1 experimental area after commissioning the secondary beam line
components, which include the superconducting solenoid, the DC-separator,
quadrupoles and bending magnets.

Positive muons with momenta of
29 MeV/c brought from Muon Science
Laboratory (MSL) at KEK after refurbishment of emitted positrons were
stopped in an aluminum plate placedat the heart of the µSR  spectrometerand the positron events were recorded
by a brand new data acquisition system designed to monitor the asym-

metry.  The build-up of the events andthe associated sharpening of the precession signal under a weak transverse
field were witnessed by an audience ofabout one hundred, who gathered at
the experimental area, and celebrated
the re-birth of the pulsed muon beamand the achievements of the J-PARC
Muon Science Section.

Asymmetry

Four months after the memorable
event of generating the first neutron
beam, the muon experimental area
at MLF opened as the most powerful  
muon beam utilization facility.  The final
commissioning procedures such as thevacuum connections and the installation of radiation shields for the decay
muon beam line were finished the day
before the first proton beam was delivered to MLF for the muon generation.
In the afternoon of September 19, themuon production target was inserted
into the target position of the proton
beam transport line.

Lifetime of µ- and spin rotation in a magnetic field measured in the D1 experimental area.

Muon target area in the proton beam transport line (left), secondary muon beam line at experimental hall (right).

J-PARC Annual Report 2008     Materials and Life Science Experimental Facility

21

Neutron instruments
Since January, 2008, the construction of an instrument suite has been
carried out intensively by many companies at the experimental halls in MLF.  
At the busiest period, over 10 installations were carried out simultaneously
under a tight schedule to make possible the first beam operation scheduled  
for the end of May. The MLF staff patrolled the construction site regularly
to reduce the risks of accidents.  Thanks
to those endeavors, the following five
instruments were ready to accept thefirst beam on Day-1:- IBARAKI Biological Crystal Diffrac-

tometer iBIX (BL-03),- Neutron-Nucleus Reaction Instrument NNRI (BL-04),- Super High Resolution Powder Diffractometer S-HRPD (BL-08),- NeutrOn Beam-line for Observation& Research Use NOBORU (BL-10),- IBARAKI Materials Design Diffractometer i-MATERIA  (BL-20).
In September, a 4D Space Access
Neutron Spectrometer 4SEASONS (BL01), and an Engineering Materials Diffractometer TAKUMI (BL-19) joined tothe commissioning stage as scheduled,

and those seven instruments became
available for the first user program.
The construction of the following four additional instruments was
finished in December, 2008, and they
advanced to the commissioning process: Neutron Optics and Fundamental
Physics Beam Line NOP (BL-05), High
Resolution Chopper Spectrometer HRC(BL-12), High-Performance Neutron Reflectometer with a Horizontal Sample
Geometry H-REF (BL-16) and High Intensity Total Diffractometer NOVA (BL21).

COMMISSIONING

BL-05 Neutron Optics and Fundamental Physics

BL-08

Super High Resolution Powder
Diﬀractometer

BL-04 Neutron-Neucleus Reaction Instrument

BL-10

NeutrOn Beam-line for
Observation & Research Use

BL-03 IBARAKI Biological Crystal Diﬀractometer

COMMISSIONING

UNDER CONSTRUCTION

BL-12 High Resolution Chopper Spectrometer

BL-02 Biomolecular Dynamics Spectrometer

BL-01 4D Space Access Neutron Spectrometer

COMMISSIONING

D1

D1 Beamline

BL-21 High Intensity Total Diﬀractometer

COMMISSIONING

D2

D2 Beamline

BL-20 IBARAKI Material Design Diﬀractometer

UNDER CONSTRUCTION

BL-14

Cold-Neutron Disk-Chopper Spectrometer

COMMISSIONING

UNDER CONSTRUCTION

BL-15

BL-19 Engineering Materials Diﬀractometer

Smaller-Angle Neutron Scattering
Instrument

BL-16

High-Performance Neutron Reﬂectometerwith a Horizontal Sample Geometry

Status of neutron and muon instruments at the MLF as of December 2008.

Materials and Life Science Experimental Facility     J-PARC Annual Report 2008

22

List of neutron instruments available for user program or under commissioning in 2008.

BL-01 4D Space Access Neutron
Spectrometer (4 SEASONS)

BL-03 IBARAKI Biological Crystal
Diffractometer (i-BIX)

BL-04 Neutron-Neucleus Reaction
Instrument (NNRI)

BL-05 Neutron Optics andFundamental Physics (NOP)

BL-08 Super High Resolution Powder
Diffractometer (S-HRPD)

BL-10 NeutrOn Beam-line for
Observation & Research Use(NOBORU)

BL-12 High Resolution Chopper
Spectrometer (HRC)

BL-14 Cold-Neutron Disk-Chopper
Spectrometer (AMATERAS)

BL-16 High-Performance Neutron
Reflectometer with a Horizontal
Sample Geometry (H-REF)

BL-19 Engineering Materials
Diffractometer (TAKUMI)

BL-20 IBARAKI Material Design
Diffractometer (i-MATERIA)

BL-21 High Intensity Total
Diffractometer (NOVA)J-PARC Annual Report 2008     Materials and Life Science Experimental Facility

23
Machine studies and trial measurements to determine the actual usage
on user programs have been carried out
on each instrument.  As a result of that,on i-BIX (BL-03), in a diffraction from aprotein crystal (volume: 13 mm3) was
observed for the first time.  Commissioning on HRC (BL-12) and H-REF (BL16) started with existing instruments
transferred from the KENS facility, KEK,
and the trial measurements were successfully carried out.  Especially, on HREF, reflection from a standard sampleof Ni layer was clearly observed in therange of the reflectivity of three ordersof magnitude, which is expected to be
improved soon after taking countermeasures for background in the further
commission work. In the case of NOVA
(BL-21), we conducted performance
test of a new GEM beam monitor to be
used for this instrument although mostof the components of the spectrometer were not yet completed.
On S-HRPD, a highest resolutionof 0.037% in d-spacing was proven via
the instrument-group measurementwith standard sample.  Moreover, thetemperature dependence of the crystal
structure of the multiferroic materials
was measured by a group of KEK and
SungKyunKwan University (Korea).
On NOBORU, the Hokkaido University
group carried out imaging measurements on alloys and welded materials.
The user program was conducted under the beam power of about 20 kW
in which frequent beam-off happened
due to a problem with the accelerator.  However, we are expecting a fullfledged user program activity.
The full-scale construction of the
Biomolecular Dynamics Spectrometer,
DNA (BL-02) and the Smaller-Angle
Scattering Instrument, TAIKAN (BL-15),
previously called HI-SANS, was approved.  The neutron guide tubes due
to be installed in the biological shields
of both instruments had already been

fabricated.   The high-pressure neutron diffractometer was decided to beconstructed at the BL-11 to use sharp
pulsed neutrons provided from the decoupled moderator.
For the development and buildingof neutron devices, the scintillation
detector development has been successfully conducted in collaboration
with the ISIS detector group.  The first
one dimensional scintillation detector
with fiber coded method for TAKUMI(BL-19) was built and tested.  A prototype of a two dimensional compact  
detector with wavelength shifting fiber read out for iBIX (BL-03)  was tested
and its production already started.  Thefabrication of super-mirror guide tubes
with µ=4  for the beam lines of chopper
spectrometers started through the useof a large scale ion beam sputtering instrument at J-PARC.
Commissioning test on two dimensional compact scintillation detectors with wavelength shifting fiber readout (first and second one) for “iBIX” andone dimensional scintillation detectors
with “ISIS-type” fiber coded method for“TAKUMI” (first and second one)  wasperformed successfully.

Related workshops and meetings.
• November 11-12, 2008  
The 2nd International Advisory Committee for the project of DNA, Biomolecular Dynamics Spectrometer.
• December 8-9, 2008.
The 3rd International Workshop on
Chopper Software• January 27 2009
The International Workshop on Nano-Structural Analysis with Wide-q.
• January 28-29, 2009
The International Advisory Committee for the Smaller-Angle Neutron
Scattering Instrument of J-PARC forreviewing the project of TAIKAN.
• January 28-29, 2009
The 7th Neutron Technical Advisory
Committee (N-TAC-7); The current
status of the development of neutron instruments and devices, themanagement of the experimental
halls, the system for user support,
the international activities and collaborations, and the future plans
were presented by members of MLF
and then reviewed by the committee.  The committee reported somevaluable recommendations such as
an increase of staff to be consistent
with the best international practices.

Measured d-spacing of Si single crystal with the world’s highest resolution of
0.037% at Super-HRPD.

Materials and Life Science Experimental Facility     J-PARC Annual Report 2008

24

Muon science
The superconducting solenoid andthe cryogenic system were transferredfrom the muon facility at KEK and installed in the secondary muon beamline at the 2nd experimental hall of
MLF.  The commissioning of the superconducting solenoid was started andsuccessfully ramped to a current of 600
A and pions from the muon production
target were injected into the solenoid.  
The pions decayed into muons in-flight,
and those muons were extracted andtransported into the D2 experimental
area.  Positive or negative muons canbe obtained by reversing the polarityof the bending and focusing magnets.  
We were able to observe the muonic
X-rays from an aluminum target.  Thesuccessful application of using negative muons for nondestructive element
analysis was shown by observing the
Au and Ag muonic X-rays from a koban(old Japanese gold coin).

In the D1 area, a µSR  experimentwith a 128-segmented spectrometer
was installed and tested by obtaining
the spin rotation spectra of muons under a 2 mT field and muonium undera 0.5 mT field.  The experimental apparatus is currently ready to run an experiment using surface muons (4 MeV
positive muons).
In January, 2009, a new cabinequipped with two sets of data acquisition (DAQ) electronics systems and users’ desks was constructed for runningthe users’ programs.  We also started
several user’s programs in the end ofJanuary.  The Saitama-University /JAEA
group identified an antiferromagnetic
state below 20 K in the (BEDT-TTF)2IBrCl compound, an organic magnet
which shows superconductivity underhigh pressure.  The KEK group obtained
results on Iron-Oxypnictide Superconductors and the Toyota group obtained
new results on lithium diffusion.

A meeting of the Muon Science
Advisory Committee (MUSAC VII) was
held at TOKAI on March 6 and 7th 2009just as the first muon beam user period was ending successfully.  The main
overall recommendation was that the
Ultra Slow Muon beams are the futureof this facility and the group should position itself to take advantage of new
funding opportunities being pursued
by users while maintaining a strong scientific vision.
We started the commissioning
work to establish the remote handling
maintenance operation in the remotehandling room and in the hot cell.  Theprocedure to exchange monitor assembly such as CT (current transformer) and PM (profile monitor) now has
been successfully established, and thestudy of the exchange process for themuon target is underway.

D1 instrument; surface muons, positive and negative muons with a momenta less than 50MeV/c are available.

Nuclear and Particle
Physics DivisionNuclear and Particle Physics Division     J-PARC Annual Report 2008

26

Hadron Experimental Hall
The Hadron Experimental Hall is
one of the two facilities at the Main
Ring and utilizes the various kinds of
secondary particles generated by protons. "We will have the most powerfulsecondary particle beams of this en-ergy," says Professor Kazuhiro Tanaka,
who led the construction of the Hall.
"We will explore the new frontier innuclear and particle physics with highintensity hadron beams. Precise measurements of CP violation in K mesons,collective motions of strange quarkin hypernuclei, and many other newgeneration fixed target experiments
are being planned."

J-PARC Annual Report 2008     Nuclear and Particle Physics Division27

To make plenty of secondary particles by the high intensity proton
beam available for experiments, manymethods of handling the high intensity
beam have been developed for this facility.  In particular, firm radiation shield
was constructed and the magnets thatwere hard to be broken and easy to be
replaced, in case in trouble in the highradiation area, were produced.  For example, the primary proton beam line

was installed with chimney magnets
down to the beam dump.  All the magnets were successfully tested with full
excitation before their installation.  Thevacuum system with the beam pipes,
the T1-downstream pentagon vessel
and pillow-seal flanges etc. have also
been commissioned successfully.
On January 27, 2009, the first beam
was successfully introduced to the halldown to the beam dump after a minor

adjustment of the beam line elements.
On that day, both the accelerator andthe hadron teams started an attempt
to slow-extract a proton beam for the
first time, and only after a few hours of
the effort, a proton beam was successfully observed at the beam dump with amonitor at 19:35.  The beam was monitored with the luminescence screens located in several places in the beam line
as displayed below.

Typical profile of the beam slowly extracted down to the hadron hall for the first time on January 27, 2009. The profile was monitored withthe luminescence screen located at 9 locations in the primary beam line.

After a scheduled maintenanceof the accelerator, on February 10th,
the production target, T1, was inserted into the proton beam to produce
secondary beams.  The first secondary beam was observed by the E15/
E17 experiment team, headed by Prof.  

Ryugo S. HAYANO (Tokyo) and Dr. Masahiko IWASAKI (RIKEN), at the K1.8BR
beam line. While the beam intensity of
the first beam was just 10nA and thebeam power of 300W corresponding
to 0.1% of the design, we were able toconfirm the first production of Kaon

beam at the facility.  The observed ratio of particle species are consistent
with our expectation and further beamtuning with the electric-separator isforthcoming.

Nuclear and Particle Physics Division     J-PARC Annual Report 200828

View of K.1.8BR area. E15 "kaonic nuclear spectroscopy" is now setting up the detector in the K1.8BR area together
with the data taking system in the counting house outside the hall aiming for the first Hadron Hall experiment inspring, 2010.

Kaon identification by Time of Flight method in K1.8BR beam line. (courtesy of E15/E17 group)

Following the success of the firstbeam, the "Workshop Celebrating theFirst Beam at Hadron Hall" was held at
the Ibaraki Quantum Beam ResearchCenter, located just next to the J-PARC
site, on March 25th and 26th. About
100 researchers attended the meeting.   They discussed reports on thefirst beam from the accelerator team,the hadron beam line team, and theE15/E17 team, as well as the reportsby the experimental groups who expect to use the beams in this fall at theK1.8 beam line and the KL beam line.  
In addition, they were encouraged by
the talks from noted theorists, Prof.

Tetsuo HATSUDA and Prof. Yasuhiro
OKADA, hearing physics opportunities
in the Hadron Hall.  In the afternoon ofMarch 26th, a tour to the Hadron Halland a general assembly of the HadronHall Users Association (HUA) also took
place.  

J-PARC Annual Report 2008     Nuclear and Particle Physics Division

29

T2K experiment
The Tokai-to Kamioka (T2K) experiment is a second-generation accelerator-based long baseline neutrino
oscillation experiment.  Muon neutrinos are generated at a newly built highintensity proton synchrotron at Japan
Proton Accelerator Research Complex(J-PARC), propagate 295 km across theearth, and are detected by the world’s
largest neutrino detector, Super-Kamiokande.  Owing to the unprecedented
intensity of the neutrino beam, whichis two orders of magnitude higher thanthat in the first-generation K2K experiment (1999–2004, KEK-to-Kamioka),
groundbreaking progress in understanding the unknown properties ofneutrinos is expected.  The construction of the neutrino facility at J-PARC
started in FY2004 and was completed
in FY2008, followed by the start of theexperiment as scheduled in April 2009.
The evidence of neutrino oscillation has shown that neutrinos havemasses and that a lepton-flavor- violating process(es) exists (exist).  The physics of neutrino oscillations is yet to berevealed; two mixing parameters (themixing angle of the first and the third
generations, θ13 and the CP phase δrespectively) and the ordering of threemass eigenvalues are unknown.  The

The expected spectrum of the off-axis beamfor 3°(blue), 2.5°(red), and 2°(black), respectively.  The νe- to- νµ flux ratio is as small as
0.4% at the peak of the νµ spectrum.

Far detector(SK)

TargetProtonbeam
Horns

OA angle
Decay Volume

The off-axis configuration of the neutrino beam line.

primary goal of the T2K experiment isto determine the last unknown mixing
angle θ13 by investigating muon neutrino to electron neutrino oscillation.  If
θ13 is sufficiently large to be measured
in the early phase of the experiment,
the possibility of discovering CP violation in the future will be enhanced.
The muon neutrinos are generated
as decay products of pions that are
produced from a target hit by a protonbeam.  One of the distinctive featuresof the neutrino beamline is so-called"off-axis" configuration.   As shownin the layout drawing, the axes of the
proton beam, and hence the neutrino
beam, are inclined at an angle of a few
degrees to the direction of the SuperKamiokande.  As shown in the resulting
neutrino spectrum for given off-axis
angles, the off-axis beam gives us theSuperconducting combined function magnets in the tunnel.

highest possible intensity of low-energy neutrinos with a small high-energy
tail, which enables precise measurements with minimum background
events.
The neutrino facility at J-PARC consists of the primary proton beam line,
neutrino beam line, and the near neutrino detector.
The purpose of the primary beamline is to transport proton beam extracted from the main ring onto theneutrino production target with designed beam direction and size.  Theprimary beam line consists of the
preparation section, arc section, andfinal focusing section. In the preparation section, property of the proton
beam from the main ring is tuned tomatch the downstream arc section using 11 normal conducting magnets.

Inside electrode of the electro-static beam
position monitor.

Nuclear and Particle Physics Division     J-PARC Annual Report 200830
Equipments in the preparation section
are designed to handle possible highradiation exposure.  In the arc section,
the beam is bent by ~80° to the Kamioka direction using 28 superconducting magnets, which are the world-firstcombined-function superconducting
magnets generating both dipole andquadrupole field with single layer coil.
Ten normal conducting magnets in the
final focusing section are used to focus
the beam onto the center of the target
with designed beam size and off-axis
angle.  Five intensity monitors, 21 position monitors, 19 profile monitors, and
50 beam loss monitors are distributed
along the beam line to guide the beam
precisely.  Just in front of the target, an
optical transition radiation detector isplaced to measure the profile of thebeam.
The secondary beam line consistsof three regions: the target station,
which contains the target and magnetic horns, the decay volume and thebeam dump.  The target is a 90-cmlong graphite rod with a diameter of 26
mm. The pions generated forward fromthe target are focused to the Kamioka
direction by a series of three electromagnets called horns.  The pions arethen travel in the decay volume, whichis ~110-m long, ~3-m wide, 3–5 m hightunnel filled with helium gas, and decay into muons and muon neutrinos inflight.  The decay volume is designed
to accommodate the beam at a 2–2.5ooff-axis angle.   A beam dump, which
consists of ~3m-thick graphite blocks
followed by ~2.5m-thick iron plates, isplaced at the downstream end of the
decay volume to stop almost all particles other than neutrinos.  High-energymuons with energies of more than 5
GeV can penetrate the beam dump.  Amuon monitor is placed immediately
after the beam dump to monitor theintensity and the profile of such muonsfor each beam shot.  The profile of themuons is a good indicator of the beam

direction and stability.
At 280 m downstream from thetarget, neutrino detectors are placed tomeasure the neutrino beam properties.  
Two independent detector systems —one located on the proton beam axis
and the other located off-axis (pointing
toward Super-Kamiokande)— are being constructed.  The main purpose of
the on-axis detector is to monitor theneutrino beam direction and intensity, while the off-axis detector aims tomeasure energy spectrum, contamination of electron neutrinos and neutrino interaction cross sections witha similar energy spectrum at SuperKamiokande.  FY2008 was the last yearof the five-years construction of the
facility.  Following the off-site fabrication and test, installation of the superconducting and normal-conducting
magnets were carried out in 2007 and2008. Installation and alignment of thebeam monitors took place in 2008, immediately after the installation of themagnets in the relevant section.  Thevacuum pipes were then totally connected and evacuated to get ready for
the MR operation in December 2008.  
Test energization of all the magnets
was also successfully completed bythen.  The software for online data acquisition and online monitoring also
got ready.

Graphite target in Ti capsule.

First magnetic horn.

J-PARC Annual Report 2008     Nuclear and Particle Physics Division

31
The target station building wascompleted and most of the beam line
components inside were installed also
in FY2008.  The installed components
are the graphite target embedded in
the first magnetic horn, a baffle to protect the target, and the OTR.  The second and the third magnetic horns areto be installed in summer 2009.  Thebeam dump was successfully installedin October 2008.  Two different typesof muon monitors, namely, ionizationchambers and silicon pad arrays, were
installed and operated.  They played an
important role in the verification of thegeneration of the first neutrino beam,
as described below.

Installation of the beam- dump core.

After the completion of the neutrino detector hall located 280 m downstream from the target, a large magnet
previously used for the UA1 experimentat CERN was successfully installed.  Various detector components to measureneutrino-induced reaction are currently being installed inside of the magnet
to get ready for the beam by December
2009.  At the end of FY2008, the central
module out of seven of the on-axis detector (INGRID) was ready for detectionof the neutrino beam.
The beam operation started in
April 2009 with a low-energy (30 GeV)and low-intensity (4 × 1011 protons/
pulse) proton beam.  The first neutrino

beam was generated on April 23.  Thescreen shot of the oscilloscope shows
the signals from muon monitors that indicates the generation of the neutrino
beam.  The neutrino beamline officiallypassed government inspection on May
28.  After the installation of the second
and third horns and the completion of
the INGRID detector, the beam commissioning will be resumed from October 2009.  We plan to start the physics
data taking with the completed off-axis
detector in December 2009.  Our firsttarget is to accumulate 100kW × 107 sequivalent data and publish physics results by the end of 2010.

Muon monitors monitor.

Nuclear and Particle Physics Division     J-PARC Annual Report 200832

Signals from muon monitors that verify the generation of the firstneutrino beam.
Schematic view of the front near detector at located 280 m
from the target.

Cryogenic Section

Cryogenic Section     J-PARC Annual Report 200834
September 2009.
The other tasks such as construction of the superconducting magnet
system for the neutrino beam line andthe research and development workfor the superconducting solenoids forhigh intensity muon beam lines are reported in the activities section.

Helium Recovery Line
From Hadron to MLF

Helium Recovery System
4

High Pressure Cylinders

Compresser

Hellium
Dewers5.8

One of the major tasks of the JPARC Cryogenics Section is to provide
liquid helium for physics experiments
and various development activities in
J-PARC.  It will be provided in collaboration between the Cryogenics Section
and the Accelerator Division. A heliumliquefaction facility, with a capacityof 100 l/h, already exists at the JAEA
LINAC building and is operated by the
Accelerator Division for superconducting radio frequency (RF)  development.
The evaporated helium gas will be recovered from remote experimental
areas by a recovery station presently
being built by KEK at the west area ofthe Materials and Life Science Experimental Facility (MLF) as shown in the  figure.   The helium recovery system
will be operated and maintained by
the J-PARC Cryogenics Section.   It is
important to make efforts to recoveras large amount of the gas as possible
in order to conserve the helium gas resources. We plan to start that service in

7.3

Hellium
Gas Bag

4.3

Helium recovery system.

Activities
1. Construction of Neutrino BeamLine Superconducting Magnet
SystemThe J-PARC neutrino beam line includes a superconducting beam linethat bends a proton beam from themain ring by 80° with a bending radius of 100 m.  The beam line uses 28
Superconducting Combined Function
Magnets (SCFM).  The figure to the rightshows a cross section of an SCFM. The
magnet uses a pair of single layer left/right asymmetric coils, which generate
a dipole field of 2.6 T and a quadrupole
field of 19 T/m accommodating 50 GeV
beam.  A helium refrigerator cools thesystem to 4.5 K, and its overall electricity

consumption is about 500 kW, which isdramatically less than in systems madefrom normal conducting magnets.
The system’s installation was completed in December 2008.   Its commissioning started in December 2008
with a refrigerator performance test.  
In January 2009, the magnet system
was cooled down to the operationaltemperature of 4.5 K within about 10
days as shown in the figure below to
the left.   The excitation tests of themagnet including the magnet quench  
were performed successfully, and thequench recovery time was confirmed
to be about two hours for the nominal
quench as shown in the figure below to
the right.

2. Development of Superconducting Solenoid for Muon
Beam Lines
We are in the process of developing
a superconducting magnet system forhigh intensity muon beam lines (suchas the Super Omega), super slow muon
beam line, or the COMET; and muon toelectron conversion experiment facility,
in collaboration with Muon Science Division in Institute of Materials Structure
Science  and Osaka University.  One ofour major achievements in japan fiscal
year 2008 was the fabrication of themodel coils, which simulate part of thecurved section of the Super Omega solenoid system. The figure below shows

J-PARC Annual Report 2008     Cryogenic Section

35
the completed model coils designed
and fabricated by KEK in house.   Although the coil fabrication and testing
were successful, we found a problem
in the mechanical design that cause
excessive cost.  As a result of reaserchand development, we corrected the design and changed the bending radiusof the curved section from 0.75 m to 1
m to simplify the mechanical design.
Based on the new bending radius, newmodel coils were also made by a privatecompany at the end of japan fiscal year
2008. The use of a new type of superconductor, MgB2, is also considered and
an R&D coil using MgB2 was also made.
Those coils will be tested in japan fiscal
year 2009.

Cool down curve of the magnet system.

Cross section of SCFM.

Re-cool down after quench.

Model coils of the curved solenoid for a muon trasport line.

Information System Section

Information System Section     J-PARC Annual Report 2008

38

Overview
The J-PARC Information System isa system of computers and networks
used for researches in J-PARC.  The Information System Section designs,
manages and operates the system.
The section provides services for the
Infrastructure Network System, the Authentication System and the Data Base
System.  Our goal is to make each system a secure and easy-to-use Information and Communication Technology(ICT) infrastructure for the J-PARC users.
In terms of computing resources,
for the moment from 2009 J-PARC will
rely on the KEK central computer system for analyzing and storing data fromneutrinos, nuclear physics and Materials and Life Science Experimental Facility.

J-PARC Information System■Infrastructure Network■ Data Base System

System■User Management, Experiment Schedule, etc.
■Experimentalp
Data Base■Network
Network System and Security System■Application Servers ( Mail, Web, etc)

■Authentication Systemy■Access Control and Authentication

Internet
JAEA LAN

KEK LAN
Authentication

Authentication
Authentication

Authentication
Infrastructure System
Authentication(DNS, Email, WEB, etc.)

J-PARC LAN(JLAN)

Experimental DB

Authentication
Management DB

Outline of the J-PARC Information system.

History
When the construction of the new
J-PARC facility began in 2001, the Center for Promotion of Computational Science and Engineering (CCSE) in JAERI(Japan Atomic Energy Research Institute, former organization of JAEA) andthe Computing Research Center in KEK
started to work in collaboration to de-sign and build the J-PARC ICT infrastructure.  The J-PARC network was plannedand structured to provide an environment necessary for smooth collaborations between JAEA, KEK and J-PARC.  
While its full-scale implementation isplanned to proceed gradually, an interim environment has been already in-troduced by JAERI (JAEA) and KEK since
October 2002.  In 2008, the JAEA/KEK
computer center collaboration was dissolved and the KEK Information System
Section was  transferred to the J-PARC
center.  All the projects previously done
through that collaboration have beentaken over by the section.

J-PARC Network (JLAN: J-PARC Local Area Network )The J-PARC network called JLAN
transparently covers two sites in
J-PARC, the Tokai site and Tsukuba sitewhich are about 60 km apart.   JLAN
provides an environment necessary
for the smooth collaboration between
JAEA, KEK and J-PARC.  In this way, thetwo sites are seamlessly connected at
network Layer 2.  Initially, the physicalconnection between the two sites andthe Internet connection used by the
KEK network started with a 10 Mbps
wide-area Ethernet.  In 2004 it was replaced with a 100 Mbps Ethernet established over the Ibaraki Broad Band
Network (IBBN) operated by the local
government of Ibaraki Prefecture.   In2005 JAERI and KEK successfully invit-

ed Super-SINET node to Tokai campus(Super-SINET is an ultrahigh-speed network for Japanese academic researches
and is provided by National Institute ofInformatics (NII).  For details please refer to http://www.sinet.ad.jp.)
In 2006, JLAN was connected to
the Super-SINET backbone networkwith a 1Gbps bandwidth.   After that,

J-PARC Annual Report 2008     Information System Section

39
JLAN had its own unique doorway to
the Internet.  In the same time, J-PARC
established a J-PARC information security policy independent both from of
JAEA and KEK.
In 2007 the SINET3 succeeded theSuper-SINET.   Since the Super-SINET
era, NII has been greatly and continu-

JAEA net

ously supporting J-PARC experiments.   
In 2008, the total number of hosts
on JLAN exceeded 1600 and was still
increasing at a rate of 150% per year.  
An increasing number of public
J-PARC users are expected to connect
to JLAN from 2009 when J-PARC starts
its operation.   For the users’ conve-

1Gbps

1Gbps

SINET JAEA
node

JLAN

2.4 Gbps

KEK netnience, a Guest Network service, which
is a wireless LAN service for short-term
visitors, will be available in almost all
J-PARC buildings.  Soon after their arrival at J-PARC, the visitors will be able
to connect to the Internet without any
prior registration.

2000
1800

20GbpsSINET 3

1400

10Gbps

10Gbps …
Japanese univ’s

10Gbps

MANLAN

1000

ESnet

KEK staﬀ users

600
400

Geant2US Universities

MLF users

800

10GbpsInternet2
APAN

1200

10GE Switch
at New York

10Gb
10GbpsAsian Univ/Labo’sν , hadron users

1600

200

European Univ./ Labo’s

JAEA staﬀ users

0

US national Labo’s

Domestic and international network connection.

Number of hosts on J-PARC (as of February, 2009).

Domestic and International network connection

Authentication system
Since J-PARC is located at the site of
an atomic energy research laboratory,
it requires a more secure authentication system for using online services,which at the same time is convenient
for its users.  The authentication System
Group researched to resolve those issues.  The group listed up possible use
cases of personal authentication over
online services in J-PARC  and mapped
their required security strength to available authentication technologies.  They
tested the feasibility of some of themfor practical use.

Standard Security Level
High Security Level
Super High Security Level
Biometrics Auth (+PKI)

OTP(Matrix, Graphics)-

Kerberos SSO

Basic Auth with
Encrypted Transmission（SSL, SSH）

OTP (Hardware Token)

802.1x/EAP(TLS)

SSL-PKI with Client Cert.
(Hardware Token）

SSL-PKI with Client Cert.
(Browser）

new
SSH-RSA(Hardware Token）
802 1x/EAP(OTP)
802.1x/EAP(OTP)

Radius-CHAP

SSH-RSA

802 1 /EAP(TTLS)
802.1x/EAP(TTLS)

802.1x/EAP(PEAP)

ID/PW(Digest-MD5)

new
802.1x/EAP(MD-5)
IP addr. Auth.
Radius-PAP
Basic Auth.
(Plain text)

802.1x/EAP(LEAP)(Radius or LDAP) &MAC addr. Auth.

2

Personal ID Auth.

MAC addr. Auth## Securuty Level Score: Arbitrary Unit

Personal authentication security level map (rev. 20071219).

Information System Section     J-PARC Annual Report 200840

Secure IC dongle.
One Time Password authentication using
Web browser. Authentication key is image pattem.
Authentication system R&D.

Database system
As an international public sciencefacility J-PARC should be as easily accessible as possible. For that purpose, weplanned a portal Web service to be used
for almost all applications and registrations for J-PARC. It should be an integrated, 24h/7days non-stop, quick response
remote service.  To provide such services several databases and subsystems were developed. As a first step, a“Proposal Submission System” (https://gamusha1.j-parc.jp/) and a “User Support System” (https://mercury.j-parc.
jp/usjparc/) were developed by the Users Office and have been in operation
since May and December 2008, respectively. The proposal submission system
displays public announcements about
the J-PARC experiments and accepts
corresponding proposal submissions.

In the User Support System, users cancomplete registrations, applications,and reservations required to stay andconduct experiments at J-PARC. As anext step, a Proposal Review System
to review submitted proposals is under development. The following tableshows the schedule for development of
the databases and systems.

FY ’09FY ’10One Stop Portal site

partially
start

ModifyOperatePersonnel DB

for public
users

for Staffs

OperatePublic user support systemstartedin Dec.

ModifyOperateproposal submission sys.

startedin JuneOperatereview sys.

Develop

Start

OperateDevelop

OperateDevelop

Operateresult report sys.
IT system ID DB
Equipment Maintenance DB

ModifyOperateDatabase systems and user portal system schedule.

Info. sys. sec.

FY ’08Administration Div.
Users affairs sec.

Experiment

NameTransmutation Section

Transmutation Section    J-PARC Annual Report 2008

42

Check and Review for Partitioning and Transmutation Technology by JAECThe Japan Atomic Energy Commission (JAEC) reviewed the Partitioning
and Transmutation (P&T) technologies
including the accelerator driven system(ADS).  The JAEC issued a report entitled “Current Status and a Way Forward
to Promote the Research and Development of Partitioning and Transmutation Technologies”.
The report summarized that P&T
technologies will contribute to rational design of nuclear waste disposal
system, and the research and development should be undertaken steadily tobuild up basic data for the discussion of
its feasibility.  As the basic policy for research and development (R&D)R&D of

P&T technologies, the report presented that the R&D of double-strata concept with ADS should be undertaken
as a part of the R&D for future nuclear
power generation systems considering
the transitional phase from light-water
reactor (LWR) cycle to FBR cycle as wellas the equilibrium phase of FBR cycle.
The report indicated that further R&D
and the collaborations with foreign
R&D activities are required for the ADS
to proceed to next R&D phase where
the feasibility study is to be performed
from the engineering and economical
viewpoints.  The report also pointed
out importance of the integral experiments of the transmutation systems,

especially requirement of the criticalexperiments using minor actinides(MA), and importance to prepare thefacility to perform these experiments.
Moreover, the report recommended
that TEF-P (Transmutation Physics Experimental Facility) planned in the second phase of J-PARC project should be
investigated as a part of the preparation of facility.
Following the decision of the JAEC,JAEA has started the discussion for rational R&D strategies including utilization plans for domestic and overseas
R&D facilities.

neering materials) under flowing PbBi condition were conducted.  Results
showed that corrosion rate of GBEM
was smaller than that of 316SS-BM(base materials).

Estimation of Acceptable Beam
Trip Frequencies

Activities
Post Irradiation Test
To evaluate mechanical propertiesof irradiated materials, post irradiation
examination (PIE) of the STIP (SINQ target irradiation program, SINQ; Swiss
spallation neutron source) specimens
was carried out at Waste Safety Testing
Facility (WASTEF) in Tokai Research andDevelopment Center, JAEA.   Resultsof the tensile tests on austenitic steel
JPCA indicated that irradiation hardening occurred with increasing displacement damage level up to 10 dpa.  At
higher doses, irradiation hardening
seemed to tend to saturate.  Degradation of ductility was bottomed around10 dpa and specimens kept its ductility until 19.5 dpa. In the present study,
all the specimens fractured in ductile
manner.
As for the development of the
LBE spallation target, corrosion testsof 316SS-GBEM (grain boundary engi-

Development of Flow Measurement Techniques
A new technique* to measure thevelocity vector in multi-dimensions on
a line in the flow field has been investigated.  A system to achieve this goal
was developed based on ultrasonicvelocity profiling by using multiple
transducers.  A three-dimensional system was constructed and successfully
applied to an actual flow field for threedimensional velocity vector measurements.   In future, this system will beapplied to measure three-directional
velocity components in the liquid metal flow.

Frequent beam trips as experienced in existing high power proton
accelerators may cause thermal fatigue
problems in ADS components which
may lead to degradation of their structural integrity and reduction of their
lifetime.   Thermal transient analyses
were performed to investigate theeffects of beam trips on the reactor
components, with the objective of formulating ADS design that had higher
engineering feasibilities and determining the requirements for accelerator
reliability.  These analyses were madeon the thermal responses of four partsof the reactor components; the beam
window, the cladding tube, the innerbarrel and the reactor vessel.  Our re* This study was supported by innovative nuclear
research and development program by Japan
Science and Technology agency (JST).

J-PARC Annual Report 2008     Transmutation Section

43
sults indicated that the acceptable frequency of beam trips ranged from 50
to 2 × 104 times per year depending on
the beam trip duration.  The former wascorresponding to the beam trip duration exceeding five minutes.   On theother hand, the latter was corresponding to the beam trip duration 10 seconds or less.  And the plant availability

was estimated to be 70 % or greater incases where the beam trip frequency
decreased to the acceptable frequency
of beam trips.
In order to consider measures toreduce the frequency of beam trips on
the high power accelerator for ADS, we
compared the acceptable frequency
of beam trips with the operation dataof existing accelerators.  The result of
this comparison showed that for typical conditions the beam trip frequency
for durations of 10 seconds or less waswithin the acceptable level, while thatexceeding five minutes should be reduced to about 1/30 to satisfy the thermal stress conditions.

Schematic illustration and measurement configuration.

An averaged three-dimensional velocity vector profile and velocity components in a rectangular water channel measured by the developed system.

Safety DivisionSafety Division     J-PARC Annual Report 2008

46
J-PARC is a proton accelerator
complex with various experimental facilities, and is managed under the Law
Concerning Prevention from Radiation
Hazards Due to Radio-Isotopes, etc. in
the Japanese legal system. A license for
its use must be issued by the Ministry of
Education, Culture, Sports, Science andTechnology (MEXT), and the related
safety inspection must be conductedby the Nuclear Safety Technology Center (NUSTEC), before the accelerator
and the experimental facilities begin
their operations. The application process for the license started in 2007 fromthe first phase of construction of the accelerator LINAC. By the end of fiscal year
2007, we have already submitted three
applications to MEXT and received apermission to deliver the 4-kW proton
beams to Materials and Life Science Experimental Facility (MLF).  

to MEXT on July 25, 2008 and all applied
items were approved on November 4,
2008. Thanks to the licensing efforts,
the preparation of the neutron andmuon instruments, which will be supplied for the first user program at MLF
was completed in terms of radiation
safety. An application for increasing
the beam power up to 250 kW was also
submitted in January 2009.

In fiscal year 2008, we were able tooperate proton beams with an intensityof 100 kW, for the next year our target
is to ramp the beam up to 250 kW. In
order to guarantee the 100 kW beam
operation, we submitted an application

The on-site inspection of the secondary beam lines in the experimental
area of MLF was successfully conducted
by NUSTEC on September 4 and 24,
2008, before and during the operation,
respectively, after which the beam linesarea was officially pened for users to
conduct beam experiments.  The photograph shows the safety inspection
conducted by NUSTEC.

Safety inspection by NUSTEC.

Application items for license in fiscal year 2008.

Accelerator /Facility

item

Application (1)*Jul. 25 2008

Application (2)Jan. 7 2009

Linac

max. accelerating particles-

1.8x1018 /h  to 2.6x1018 /h

RCS

max. accelerating particles

from 3.1x1016 /h  (@4.1 kW)
to 7.5x1017 /h (@100kW)

from 7.5x1017 /h (@100kW)
to 1.9x1018 /h (@250 kW)

MR

max. acceleration energy

from 3-GeV to 30-GeV

MLF

max. accelerating
particles
Neutron instruments
Muon instrumentfrom 3.0x1016 /h (@4 kW)
to 7.5x1017 /h (@100kW)
Add 5 instruments (total 12)
1 insturment

Hadron Hall

max. accelerating particles
max. acceleration energy
Exparimantal beam line

9x1014 /h
30 GeV
Kaon experimantal beam line
(K1.8BR)

Neutrinomax. accelerating particles
max. acceleration energy(*) All Items applied for on July 25, 2008, were approved on November 4, 2008.

from 7.5x1017 /h (@100kW)
to 1.9x1018 /h (@250 kW)

9x1014 /h
30 GeVUsers OfficeUsers Office     J-PARC Annual Report 200848
The J-PARC Users Office (UO) started its operation in fiscal year 2007.  Since December 16 2008, the UO moved to a new
office space located on the first floor of the “Ibaraki Quantum Beam Research Center” building.  The building is located 300m
to the north of the main gate of the J-PARC and has been previously used by the NTT (Nippon Telegraph and Telephone
Corporation) Research Center.
The J-PARC Users Office had the following achievements in fiscal year 2008:
April 1, 2008;	UO started issuing the J-PARC User ID card to users. The users are requested to take their photoat UO or to send a jpeg-file of the photo in advance.
May 19, 2008;	training for general safety and radiation workers at J-PARC with video was started targeting theusers at UO.
July 8, 2008;	the proposal submission system for J-PARC started and first were called proposals for the MLF(Materials and Life Science Experimental Facility) user program for the second half of fiscal year
2008 (2008B)  term.
March 25-26, 2009;	UO provided assistance for the “First-Beam Workshop at the J-PARC Hadron Experimental Hall”
held at the Ibaraki Quantum Beam Research Center.  

Entrance of the “Ibaraki Quantum Beam Research Center” building where the J-PARC Users Office is located.

Staff of the J-PARC Users office. (as of April 2009)

J-PARC Annual Report 2008     Users Office49
Items handled by the Users Office● Procedures to use J-PARC
User registration
Procedures to work at J-PARC
Accommodation booking
Procedures to work at radiation
    controlled area
Other applications
Safety Instructions● Procedures to enter/leave J-PARC
Procedures to enter/leave J-PARC● How to get to J-PARC
Public Transportation
Rental car Information
KEK bus
JAEA bus(circulating inside of JAEA/commuter)● On site Information
On site Facilities
AED (Automated External Defibrillator),     First Aid Kit, Stretchers● Borrow Items
Procedures to borrow items
Cafeteria card
Other services● Application for network use
Network (JLAN) use in Tokai area
Network use at Tsukuba campus● Accommodations
Accommodations at KEK    (Tsukuba Campus)
Akogigaura Club
Masago International Lodging
Tokai bunshitsu● Daily Life Information
Visa

Users Office     J-PARC Annual Report 2008

50

Users
J-PARC Users (person-days)
Accelerator
156

J-PARC Foreign Users (person-days)
Accelerator32

MLF 62
Hadron 9

MLF
1,052
Neutrino
1,902

Hadron837

Neutrino
1,024

Number of users, who stayed at J-PARC in JFY2008 since the beginning of the user program at MLF in December, 2008. Total
number of users at each facility (left). Total number of foreign users at each facility (right).

User Progrom

User Program     J-PARC Annual Report 200852

1. Proposal reviewing system for the J-PARC/MLF User program

Approval process for experimental programs in Materials and Life Science Experimental Facility (MLF).

The Neutron Science Proposal Review Committee and the Muon Science Proposal Review Committee were organizedin 2008.   The first proposals for the MLF user program for the second half of fiscal year 2008 (2008B) term  were called from
July 7 to the end of August, 2008.  The call for the first half of fiscal year 2009 (2009A) term  opened on December 1, 2008
and closed in February, 2009.

2. P
 rogram Advisory Committee (PAC) for Nuclear and Particle Physics Experiments at the J-PARC
50GeV Proton Synchrotron

Council for
IPNS

Institute of Particle
and Nuclear Studies(IPNS) at KEK

J-PARC CenterԙԝRecommendationof the members
Program Advisory Comm.
(PAC)

IPNS
Director

Ԛ
ԛ

Ԝ

Ԙ

J-PARC Users

Ԙ Submission
ԙ Evaluation Request
Ԛ Evaluation Request
ԛ Evaluation Result
Ԝ Evaluation Report
ԝ Reply to Users

Approval process for experimental programs in particle and nuclear sciences.

The PAC was organized in 2006 to be in charge of(1) evaluation of the scientific merits, technical feasibility and recommendations about the neutrino program at JPARC,(2) evaluation of the scientific merits and technical feasibility of proposals at the hadron hall and the prioritization of
the secondary beam line (K1.8 /K1.8BR /K1.1/ K1.1BR/  K0/ Others),(3) prioritizing proposals as to which are to be Day-1 experiments.
The first PAC meeting was held on June 30- July 2, 2006. The seventh PAC meeting, which was the last for fiscal year 2008,
was held on March 6 and 7, 2009.

J-PARC Annual Report 2008     User Program

53

Approval summary of the J-PARC/MLF User program.
(1) Approved summary of  the 2008B user program

Number of the proposals submitted and/or approved for the
2008B user program for each instrument in MLF.

Requested and allocated beam time to each instrument forthe 2008B user program.

(2)  Approval summary of 2009A User program.

Number of the proposals submitted and approved for the
2009A user program for each instrument in MLF.

Requested and allocated beam time to each instrument.

Access mode for MLF use(a)  General user program
The general use provides both national and international users with an opportunity to conduct experiments with the
instruments of MLF.  A variety of experiments are accepted, both for academic research and for industrial applications.
(b)  Project use
The project use is the access mode in which JAEA and KEK conduct their main tasks oriented programs such as inclusive
scientific research projects, research programs proposed to fulfill the plans for midterm goal of JAEA, joint research programs and contract research programs with other institutes or organizations. The principal investigator of the project use
may request the beamtime longer than one year in his/her proposal.  
(c)  Instrument group use
The instrument group use is dedicated to instrument scientists responsible for the beam-line instruments.
The instrument group shall maintain and/or improve the performance of their instrument, and conduct the leadingedge research and development which will output maximal performance of the instrument so that MLF always canprovide users with the most superior experimental environments.

User Program     J-PARC Annual Report 2008

54

Approval summary of the 50 GeV- PAC after the 7-th meeting (March 7, 2009)(Co-)
Sporkspersons

Affiliation (*)

Title of the experiment

Slow line
Approval statuspriority(PAC
Beanlinerecommendation) Day1? Day1
Priority

E03 K. Tanida

Kyoto U

Measurement of X rays from X− Atom

Stage2K1.8

J. C. Peng,
P04
S. Sawada

U. of Illinois
at UrbanaChampaign,
KEK

Measurement of High-Mass Dimuon Production at
the 50-GeV Proton Synchrotron

DeferredPrimaly

E05 T. Nagae

KEK

Spectroscopic Study of X-Hypernucleus, 12XBe, via
the 12C(K−, K+) Reaction

Stage 2E06 J. Imazato

KEK

Measurement of T-violating Transverse Muon
Polarization in K+ → p0 m+ n Decays

Stage 1K1.1BR

K. Imai,
E07 K. Nakazawa,
H. Tamura

Kyoto U., Gifu U., Systematic Study of Double Strangeness System
Tohoku U.
with an Emulsion-counter Hybrid Method

Stage 2

K1.8

Pion double charge exchange on oxygen at
J-PARC

Stage 1K1.8

Osaka U

Production of Neutron-Rich Lambda-Hypernuclei
with the Double Charge-Exchange Reeaction(Revised from Initial P10)

Stage 2K1.8

E11 K. Nishikawa

KEK

Tokai-to-Kamioka (T2K) Long Baseline Neutrino
Oscillation Experimental Proposal

Stage 2neutrino

E13 H. Tamura

Tohoku U.

Gamma-ray spectroscopy of light hypernuclei

Stage 2

E14 T. Yamanaka

Osaka
University

Proposal for KL → p0 n n-bar Experiment at J-PARC

Stage 2

M. Iwasaki,
T. Nagae

RIKEN, KEK

A search for deeply-bound kaonic nuclear statesby in-flight 3He(K–, n) reaction

Stage 2RIKEN

Electron pair spectrometer at the J-PARC 50-GeV
PS to explore the chiral symmetry in QCD

Stage 1

U. Tokyo, RIKEN

Precision spectroscopy of Kaonic 3He 3d→2p
X-raysStage 2

Coincidence Measurement of the Weak Decay of
LC and the three-body weak interaction process

Stage 1

E08 A. Krutenkova ITEP
E10

E15

A. Sakaguchi,
T. Fukuda

E16 S. Yokkaichi
E17

R. Hayano,
H. Outa

Day1

Day1

1

2

K1.8

K1.8
K0

Day1

K1.8BR
High pt

Day1

K1.8BR

H. Bhang,
E18 H. Outa,
H. Park

SNU, RIKEN,
KRISS

E19 M. Naruki

RIKEN

High-resolution Search for Q+Pentaquark in p−p →K−X reactions

Stage 2

P21 Y. Kuno

Osaka U

An Experimental Search for m - e Conversion at a
Sensitivity of 10−16 with a Slow-Extracted Bunched
Beam

DeferredNewbeamline

Osaka U

Exclusive Study on the Lambda-N Weak Interaction
in A=4 Lambda-Hypernuclei (Revised from Initial
P10)

Stage 1

K1.8

T25 S. Mihara

KEK

Extinction Measurement of J-PARC Proton Beam at
test
K1.8BR
experiment

P26 K.Ozawa

U. Tokyo

Direct measurements of omega mass modificationin A(pi-, n) omega reaction and omega → pi0
gamma decay.

E22

A. Ajimura,
A. Sakaguchi

12

Deferred

K1.8
Day1

K1.8

-

J-PARC organization andcommittees

J-PARC organization and committees     J-PARC Annual Report 2008

56

Organization structure
Steering Committee
International Advisory
Committee

KEK President

JAEA President

Safety Committee

S. Nagamiya

Director,
J-PARC Center

Y. Oyama

Y. Yamazaki

Deputy Director,
J-PARC Center

Deputy Director,
J-PARC Center

Y. Ikeda /Deputy Division Leader: S. Ikeda

A. Ando /Deputy Division Leader : H. Yoshikawa

Materials andLife Science Division

Accelerator Division
Accelerator Section I

Users Consultative
Committee

K. Nishikawa /Deputy Division Leader: N. Saito

Particle andNuclear Physics Division

Neutron Source Section

K. Hasegawa

M. Futakawa /Deputy Section Leader : M. Kaminaga

Accelerator Section Ⅱ

Neutron Science Section

M. Kinsho

Accelerator Section Ⅲ

M. Arai /Deputy Section Leader : K. Aizawa, T. Kamiyama

H. Yoshikawa

Neutron Instrumentation Section

Accelerator Section Ⅳ

K. Soyama

K. Kikuchi

Muon Science Section

Accelerator Section Ⅴ

K. Nishiyama

Transmutation Section
H. Oigawa /Deputy Section Leader : K. Kikuchi

Cryogenics Section
T. Ogitsu /Deputy Section Leader : Y. Makida

H. Kobayashi

Accelerator Section Ⅵ
T. Koseki

T. Miura /Deputy Division Leader : H. Nakashima

M. Murasawa

Safety Division

Administration Division

Radiation Safety Section

General Affairs Section

Y. Miyamoto

K. Katsuta /Deputy Section Leader : T. Watanabe

Health and General Safety Section

Users Affairs Section

T. MiuraManagement Supporting Section
M. Takasaki /Deputy Section Leader : S. Ishiyama

Information System Section
A. Manabe

K. Fujita /Deputy Section Leader : T. Yokoo

Users Office Team
Utilization Promotion TeamInternational Relations Team

Public Relations Section
K. Suzuki

J-PARC Annual Report 2008     J-PARC organization and committees

57

Member lists of the Advisory Committees organized for J-PARC (as of March, 2009)
International Advisory Committee
Eugene W. Beier          Jia'er Chen
Bernard Frois
Hidetoshi Fukuyama
Stuart D. Henderson
Stephen D. Holmes
Claude Petitjean
Jean-Michel Poutissou
Yoichiro Suzuki
Satoru Tanaka
Andrew Taylor
Steve Vigdor
John W. White

University of Pennsylvania, USA
Peking University, China
CEA-Saclay, FranceTokyo University of Science, JapanOak Ridge National Laboratory, USA
Fermi National Accelerator Laboratory, USA
Paul Scherrer Institute, Switzerland
TRIUMF, Canada
University of Tokyo, Japan
University of Tokyo, Japan
Rutherford Appleton Laboratory and ISIS, UK
Brookhaven National Laboratory, USA
Australian National University, Australia (chair)

Accelerator Technical Advisory Committee
Roland Garoby
Ian Gardner
David Gurd      Stuart D. Henderson
Ingo Hofmann   Stephen D. Holmes
Akira Noda
Thomas Roser
Lloyd M. Young           Jie Wei

CERN
Rutherford Appleton Laboratory, UK
Oak Ridge National Laboratory (retired), USA
Oak Ridge National Laboratory, USA
GSI, Germany
Fermi National Laboratory, USA  (chair)
Kyoto University, Japan
Brookhaven National Laboratory, USA
Los Alamos National Laboratory (retired), USA
Brookhaven National Laboratory & Tsinghua University, China

Linac Upgrade Subpanel participants
Roland Garoby
Lloyd M. Young
Leonid KravchukPeter Ostroumov
Tsumoru Shintake        

CERNLos Alamos National Laboratory (retired), USA
Institute for Nuclear Research, Russia
Argonne National Laboratory, USA
Riken, Japan

Neutron Science Technical Advisory Committee
Günter Bauer
Stephen Bennington
Kurt Clausen
John Haines
Toshiji Kanaya  
Yoshiaki Kiyamagi  
Dan Neumann
Robert Robinson
Kazuyoshi Yamada

Forschungs Zentrum Jülich (retired), ESS, Germany
Rutherford Appleton Laboratory, UK
Paul Scherrer Institut, Switzerland
Oak Ridge National Laboratory, USA
Kyoto University, Japan
Hokkaido University, Japan
National Institute of Standards and Technology, USA (chair)
Australian National Science and Technology Organization, Australia
Tohoku University

J-PARC organization and committees     J-PARC Annual Report 2008

58

Muon Science Advisory Committee
Jun Akimitsu
Yoshihiko Hatano
Robert H. Heffner
Susumu Ikeda
Yujiro Ikeda
Masahiko Iwasaki
Yasuhiro Miyake
Nobuhiko Nishida
Kusuo Nishiyama
Jean-Michel Poutissou
Claude Petitjean
Leonid I. Ponomarev
Yoshinari Yamazaki

Aoyama Gakuin University, Japan
Japan Atomic Energy Agency, Japan
Los Alamos National Laboratory, USA
High Energy Accelerator Research Organization, Japan
Japan Atomic Energy Agency, Japan
Riken, Japan
High Energy Accelerator Research Organization, JapanTokyo Institute of Technology, Japan
High Energy Accelerator Research Organization, Japan
TRIUMF, Canada (chair)
Paul Scherrer Institute, Switzerland
Kurchatov Institute, Russia
High Energy Accelerator Research Organization, Japan

Radiation Safety Committee
Shuichi Ban
Tatsuji Hamada
Hideo Hirayama
Makoto Inoue
Kazuaki Kato
Kenjiro Kondo
Takeshi Murakami
Takashi Nakamura
Hiroshi Noguchi
Osamu Oyamada
Kotaro SatohYoshitomo Uwamino
Makoto YoshidaHigh Energy Accelerator Research Organization, Japan
Japan Radioisotope Association, Japan (chair)High Energy Accelerator Research Organization, Japan
Kyoto University, Japan
High Energy Accelerator Research Organization, Japan
High Energy Accelerator Research Organization, Japan
National Institute of Radiological Science, Japan
Tohoku University, Japan
Japan Atomic Energy Agency, Japan
Japan Atomic Energy Agency, Japan
High Energy Accelerator Research Organization, JapanRIKEN, Japan
Japan Atomic Energy Agency, Japan

Users Consultative Committee for J-PARC
Yasuhiko Fujii
Toshiharu Fukunaga
Yoshiaki Fukushima
Makoto Hayashi
Tomohiko Iwasaki
Shinichi Kamei
Toshiji Kanaya
Yoshiaki Kiyanagi
Sachio Komamiya
Tomofumi Nagae
Tsuyoshi Nakaya
Kazuma Nakazawa
Nobuhiko Nishida
Kazumi Nishijima
Koichiro Nishikawa
Kusuo Nishiyama
Mamoru Sato

Japan Atomic Energy Agency, Japan
Kyoto University, Japan
Toyota Central R&D Labs., Inc., Japan
Ibaraki Prefecture, Japan
Tohoku University, Japan
Mitsubishi Research Institute, Inc., Japan
Kyoto University, Japan
Hokkaido university, Japan
University of Tokyo, Japan
Kyoto University, Japan
Kyoto University, Japan
Gifu University, JapanTokyo Institute of Technology, Japan
Mochida Pharmaceutical Co., Ltd., Japan
High Energy Accelerator Research Organization, Japan
High Energy Accelerator Research Organization, Japan
Yokohama City University, Japan

J-PARC Annual Report 2008     J-PARC organization and committees

59
Naohito Saito
Hideyuki Sakai
Hirokazu Tamura
Eiko Torikai
Kazuyoshi Yamada
Taku Yamanaka  
Hideki Yoshizawa

High Energy Accelerator Research Organization, Japan
University of Tokyo, Japan
Tohoku University, Japan
Yamanashi University, Japan
Kyoto University, Japan
Osaka University, Japan (chair)
University of Tokyo, Japan

BudgetConstruction budget profile.

Operation budget profile.

Events

Events     J-PARC Annual Report 2008

62

EventsMarch 5 – 7, 2008
The First J-PARC International Symposium, Mito, Ibaraki, Japan.
Two major symposium a)materials
and life science (IPS08) and b)particle
and nuclear physics (NP08 workshop),respectively, were held separately,
whereas the joint session was held in theGroup photo.

afternoon of March 5.  About 250 members participated in the former symposium and 200 in the latter, with the total
number within JFY2008, many plans,
dreams, and future expansions were dis-cussed at these two symposia.
The proceedings of IPS08 was issued as the journal Nuclear Instruments
and Methods in Physics Research A, Vol.
600 (2009).

Poster session.

May 15, 2008
Ceremony for establishment of the Industrial Users Society for Neutron Application and thesymposium of science and technology for industry, TokyoOn May 15th, a ceremony for establishment of the Industrial Users Society
for Neutron Application and a symposium of science and technology for industry were held in Tokyo.
Many companies (49 companies, 83

A scene of the Ceremony.

people) in area of industry, electric, steel,automobile, chemical, medicine etc.,
participated for the ceremony for establishment. Mr. Takashi Imai, the honoraryof Nippon Steel Co., was appointed thechairman of this society. This society

established committees on IndustryAcademia collaboration, and provided
much technical information, organizedworkshops, summarized the needs of industry within 2008.

Mr. Shoyama, the executive vice chairman, gave an inauguralspeech on behalf of the Chairman Imai.

J-PARC Annual Report 2008     Events

63
After the ceremony, the symposiumof science and technology for industry
was attended by about 350 participantsof academies, organizations of research,
industry.   Before the start of the symposium, guests speeches made by Mr.
Matsunami, Vice Minister of Education,

A scene of the symposium.

Culture, Sports, Science and Technology,
Mr. Okumura, the member of Council
for Science and Technology Policy and
Mr. Shoyama, chairman of Hitachi Ltd..  
In the first part, Director Akimitsu of
Aoyama Gakuin University and the others gave a lecture.  In the second part,

representatives of Industry, Academy
and Government gave speeches about
needs and expectations to J-PARC, after that, a panel discussion on needs
and expectations of neutron in J-PARC
was moderated by Mr. Ikawa of Yomiuri
Shimbun editorial writer.

Panel discussion.

August 10, 2008
J-PARC Open House
On August 10th, the entire J-PARC
facilities were opened to the public.   
Many people came from various regions
and enjoyed a tour of five facilities, LIN-

Many people lined to wait the tour bus.

AC, 50 GeV synchrotron, Materials andLife Science Facilities, Hadron Experimental Holl, and Neutrino Experimental Facilities.   The number of visitors is

Visitors to MLF.

about 2,600 people and was more than
expected.

Events     J-PARC Annual Report 2008

64

October 19 -25, 2008
The Asian Science Seminar on High Intensity Proton Accelerator, Beijing, China.
The seminar was planned primaryfor Asian young scientists who hadstrong interest in scientific research to
be carried out at high-intensity proton
accelerators such as J-PARC and at otheraccelerator facilities in Asia.  In the seminar, lectures were given by Asian leading
scientists on science frontier related to
J-PARC in nuclear/particle physics andmaterial/life science, as well as on the ac-celerator and experimental facilities.  Thenumber of participants by countries is
China 102, Japan 86, Korea 13, Taiwan 3,
and USA 3.  Many young people (about70) attended this conference.

November 18, 2008
Signing of a cooperation agreement among JAEA, KEK and Ibaraki Prefecture
JAEA, KEK and Ibaraki Prefectural
Government signed a cooperationagreement to promote the applicationof neutron in J-PARC.  The three parties
cooperate and support with each otherin user support, Users Office operations,
technical development and operationand maintenance of beam line use, anddissemination of neutron.  On November 18th, agreement signing ceremony

was held in Ibaraki prefectural building,and the agreement was signed by the
President of JAEA, the Director Generalof KEK, and the Governor Ibaraki.

From left;
President Okazaki of JAEA,
Governor Ibaraki Mr. Hashimoto,Director Nagamiya of J-PARC center
Director General Suzuki of KEK.

J-PARC Annual Report 2008     Events

65

December 16, 2008
Ceremony for MLF and New Building for Users, “IQBRC”
On December 16th, a ceremony washeld in Tokai to celebrate the opening of
the Materials and Life Science Experimental Facility (MLF) facilities to public
users, a new building named as Ibaraki
Quantum Beam Research Center (IQ-

BRC), that is owned by Ibaraki Prefectural
Government, and a new facility named
as Tokai-mura study exchange plaza in
IQBRC, that is owned by Tokai Village.  
IQBRC is located near the outside of Nuclear Science Research Institute, which

A scene of the ceremony.  

J-PARC is located in.  It is now accommodate Ibaraki Prefecture, Tokai Village, University of Tokyo, Ibaraki University, andthe Users Office of J-PARC Center.  Andit is available to use by J-PARC users as awork apace.

Ibaraki Quantum Beam Research Center (IQBRC).

March 25 -26, 2008
The First-Beam Workshop at the J-PARC Hadron Experimental Hall, IQBRC, Tokai-mura.
    About 100 researchers attended
the meeting and discussed reports on
the first beam from the accelerator team,the hadron beamline team, and the E15/
E17 team, as well as the reports by theexperimental group who expect to use

the beams in this fall at the K1.8 beamline
and the KL beamline.  In addition, they
were encouraged by the talks from noted
theorists, Prof. Tetsuo HATSUDA and Prof.
Yasuhiro OKADA, hearing physics opportunities in the Hadron Hall.  In the after-

noon of March 26th, a tour to the HadronHall and a general assembly of the Hadron Hall Users Association (HUA) also took
place.

Other Activities in 2008
Activities of the Industrial Users Society for Neutron Application in 2008
The Industrial Users Society for Neutron Application was established to promote industrial application of neutron on
May 15, 2008. Membership was 49 companies at the end of March, 2009.
In 2008, the Steering Committee

and Research & Development Committee were organized to operate and discuss research activities of the Society.
The Society provided much information
about industrial use, the operation statusof J-PARC and JRR-3, the call for propos-

als of J-PARC and some meetings andso on.  Various research meetings wereplanned and held in cooperation with
Ibaraki Prefectural Research Society for
Industrial Application of neutron Science.
Further, the Society called for participa-

Events     J-PARC Annual Report 2008

66
tions in some training courses of neutron
experiments in cooperation with Nuclear
Technology and Education Center andQuantum Beam Science Directorate of

JAEA.  Also the Seminars on Industrial Application of Neutron were held in Osaka
city (December 19, 2008), Saitama city
(February 3, 2009) and Hamamatsu city

(February 5, 2009) for dissemination of industrial neutron use in cooperation with
Ibaraki Prefecture and J-PARC Center.

Activities of J-PARC/MLF Users Society in 2008
The J-PARC/MLF Users Society wasestablished to promote application of JPARC through mutual exchange of users
on September 7th in 2007.  Membershipwas 259 people, and Sponsor membership was 12 parties at the end of March,
2009.
In 2008, the Secretary Committee

and 9 Studying Subcommittees wereorganized to promote the research activities among researchers and engineers
by application of neutron and muon in
J-PARC/MLF.  Subcommittees established
the action plan in this year, and decided
to hold some workshops in cooperation
with the Industrial Users Society for Neu-tron Application and the Ibaraki committee of neutron application.  This Society
provided much information about theoperation status and construction statusof J-PARC/MLF, the call for proposals, theresults of neutron and muon researchand some events and so on.

Activities of the Hadron Hall Users’ Association (HUA) in 2008
The Hadron Hall Users’ Association,
HUA, was founded on March 25, 2007.
The purpose of HUA is, according to theCharter, to provide an organized channel for the interchange of information
among those who use the Hadron Hall of
the J-PARC, to make up a collective opinion among researchers from different
fields with a bottom up basis, to promotebetter research activities, and to use theresults of the research to promote the science of the Hadron Hall to a wide audience. The activities include• Interchanging information between the members,• Collecting opinions from the users about the current activities andthe future plans of the facility, andreporting these opinions to the JPARC Center and other related organization,• Presenting information for the us-

ers, and promoting interchange
among various researchers andorganization,• Recommending the representatives of the Hadron Hall that sit on
the Users’ Committee of J-PARC,• Hosting scientific meetings, suchas a Hadron Hall symposium, andpromoting interchange and cooperation with other scientific organization, and• Other necessary activities toachieve the purpose of HUA.
The membership was 154 at the endof the Japanese Fiscal Year (JFY) 2008,
including 30 from foreign institutions.
Two meetings were held by HUA during JFY2008. An information meetingof HUA was held at Yamagata University
during the autumn meeting of the Physical Society of Japan (JPS) on September
20.   Status of the construction of theslow extraction system was reported aswell as the general status of the HadronHall construction. The general assemblyof the year, which must be held at least
once a year, was held at the Ibaraki Quantum Beam Research Center on March 26,
2009, just after the “First-Beam Workshop
at the J-PARC Hadron Experimental Hall”
at the same place. The success of the 1st
beam to the Hadron Hall was reported,and the result of the election of themembers of the Executive Committee for
JFY2009 was introduced, as well as general discussions including ones with theuser coordinator of J-PARC.
The Hadron Hall just entered its operational era. Bottom-up activities by
the researchers themselves who use theHadron Hall are of the most importanceto achieve scientific goals in this era. HUA
will strengthen its activities.

J-PARC Annual Report 2008     Events

67

Major Visitors to J-PARC in 2008

Akiko Santo (wear in light blue), the Vice Presidentof the House of Councillors. (June 27, 2008)

Dr. Ferenc Mezei, the Hungarian Academy of Sciences and His
Excellency Mr. Ernő Bohár, the Hungarian Ambassador to Japan(September 2, 2008).

Koji Omi, the member of theHouse of Representatives. (July3, 2008)

From left; Akira Gunji, the member of the House of Councillors;
Masamitsu Naito, the member of the House of Councillors;
Yukihisa Fujita, the member of the House of Councillors. (July9, 2008)
Prof. Jiang Mianheng, vice president of the Chinese Academy of
Sciences (CAS) and 6 other members of CAS, (January 16, 2009).

Keichi Ishii, the memberof the House of Representatives. (July 15, 2008)

Dr. R. Chidambaram, Principal Scientific Advisor to the Government of India and Chairman, Scientific Advisory Committee to the
Cabinet, (January 20, 2009).

Kisaburo Tokai, the Minister of
Education, Culture, Sports, Scienceand Technology. (July 18, 2008)

Toshio Yamauchi, the SeniorVice Minister of Education, Culture, Sports, Science and Technology. (September 2, 2008)

Publications

Publications     J-PARC Annual Report 2008

70

Publications in Periodical Journals
A-001
Kohara, S. et al.
Structural basis for the fast phase change of
Ge2Sb2Te5: Ring statistics analogy between
the crystal and amorphous states
Appl. Phys. Lett. Vol. 89, p. 201910 (2006)
A-002
Oigawa, H. et al.
Experiment for accelerator-driven
transmutation
Butsuri Vol. 56, p. 749 (2001)
A-003
Shibata, T.
Utilization of Radiation in Industrial,
Agricultural and Medical Fields and its
Perspective
Butsuri Vol. 63 p.257 (2008)
A-004
Nagamiya, S. et al.
Proton collaboration is under way in Japan
CERN Courier Vol. 40, p. 23 (2000)
A-005
Takano, H.
Transmutation of long-lived radioactive
wastesElect. Rev. Vol. 86, p. 46 (2001)
A-006
Futakawa, M. et al.
JSNS and MUSE at MLF in J-PARC
Energy review Vol. 28, p. 19 (2008)
A-007
Arai, M.
Instrument Suit for J-PARC neutron source tobe used for basic science to industrial use
Energy Vol. 455, p. 52 (2006)
A-008
Kohara, S. et al.
Structure of Mg2SiO4 glass made by a method
for containerless supercooled-liquid-phaseprocessing at high temperatures
Expected materials for the future Vol. 5, p. 28(2005)

Flow Measurement Instrum. Vol. 19, p. 189(2008)
A-011
Futakawa, M. et al.
Triple ion beam irradiation tests on windowmaterials of spallation targets
FZKA-6876, p. 166 (2003)
A-012
Kurata, Y. et al.
Main results of static and dynamic corrosion
tests in oxygen-saturated liquid lead-bismuth
FZKA-6876, p. 190 (2003)
A-013
Mukaiyama, T.
Transmutation of long-lived nuclides
Genshikaku Kenkyu Vol. 46, p. 47 (2001)
A-014
Oigawa, H.
Present status and perspective on nuclear
transmutation, C; Accelerator driven
transmutation system
Genshikaku Kenkyu Vol. 47, p. 39 (2003)
A-015
Nagamiya, S.
Outline of J-PARC and Changes from Planning
Future Studies of Nuclear Physics to J-PARC
Genshikaku Kenkyu Vol. 50, p. 1 (2006)
A-016
Kiyomichi, A. et al.
Introduction of the slow beam extraction
system for J-PARC 50GeV Main Ring
Genshikaku Kenkyu Vol. 53, p. 47 (2008)
A-017
Oigawa, H.
Accelerator driven transmutation system(ADS) and Asia ADS network initiative
Genshiryoku EYE Vol. 49, p. 74 (2003)
A-018
Fujii, Y.
Utilization of intense neutron beams frombasic research through industrial application
Genshiryoku EYE Vol. 51, p.18 (2005)

A-009
Haga, K. et al.
Completion of J-PARC Mercury Target System-Outline and TopicsFAPIG Vol. 177, p. 12 (2008)

A-019
Aizawa, K.
To smaller angle
Hamon Vol. 12, p. 218 (2002)

A-010
Obayashi, H. et al.
Velocity vector profile measurement using
multiple ultrasonic transducer

A-020
Suzuya, K.
Structure of oxide glasses by synchrotron
X-ray and neutron diffraction

Hamon Vol. 13, p. 51 (2003)
A-021
Yamazaki, D.
Pulse shaping with Drabkin energy filter
Hamon Vol. 14, p. 130 (2004)
A-022
Ikeda, Y.
Overview of 1MW pulse neutron source at
J-PARC
Hamon Vol. 15, p. 6 (2005)
A-023
Maekawa, F.
Shielding calculation of JSNS
Hamon Vol. 15, p. 10 (2005)
A-024
Yamazaki, D. et al.
Neutron polarization control for beamhandling and spectrometry
Hamon Vol. 15, p. 51 (2005)
A-025
Nakamura, T. et al.
Development of ZnS/6LiF scintillating and
MSGC neutron detectors in JAERI
Hamon Vol. 15, p. 67 (2005)
A-026
Yamazaki, D. et al.
A New neutron reflectometer SUIREN at JRR-3
Hamon Vol. 16, p. 174 (2006)
A-027
Nakamura, M.
Relation between high ionic conductivity
and low-energy dynamics in superionic
conducting glass
Hamon Vol. 16, p. 209 (2006)
A-028
Maekawa, F. et al.
NeutrOn Beam-line for Observation andResearch Use (NOBORU)
Hamon Vol. 17, p. 187 (2007)
A-029
Futakawa, M. et al.
Current status and future in development of
JSNS
Hamon Vol. 18, p. 22 (2008)
A-030
Ikeda, Y.
Aiming at Establishment of a Good System
for J-PARC Users.
Hamon Vol. 18, p. 27 (2008)

J-PARC Annual Report 2008     Publications

71
A-031
Toyoda, A. et al.
Development of the Optical Transition
Radiation Monitor for the High Intensity
Proton Beam Profile Measurement
IEEE Nucl. Sci. Symp. Conf. Rec., p1338 (2006)

A-040
Nakamura, T. et al.
Usage of a capillary plate as a pre-gasamplification device for a neutron microstrip
gas chamberIEEE Trans. Nucl. Sci. Vol. 51, p. 1519 (2004)

A-049
Hoshikawa, A. et al.
Observation of hydrogen in deuterated
methane hydrate by maximum entropy
method with neutron powder diffraction
J. Chem. Phys. Vol. 125, 034505 (2006)

A-032
Tanaka, K.H. et al.
Development of Radiation-Resistant Magnets
for the JHF Project.
IEEE Trans. Appl. Supercond. Vol. 10, p. 206(2000)A-041
Oyama, Y.
Construction of High Intensity Proton
Accelerator Facility (J-PARC)
Inspection Engineering Vol. 11, p. 1 (2006)

A-050
Suzuya, K. et al.
Very strong hydrogen bonds in a bent chain
structure of fluorohydrogenatc anions inliquid Cs(FH)2.3F
J. Chem. Phys. Vol.129, 014512 (2008)

A-033
Tanaka, K.H. et al.
Development of Radiation-Resiatant Magnets
for the JHF Project.
IEEE Trans. Appl. Supercond. Vol. 12, p. 278(2002)
A-034
Tanaka, K.H. et al.
Development of Radiation-Resistant Magnets
for JHF/J-PARC
IEEE Trans. Appl. Supercond. Vol. 14, p. 402(2004)
A-035
Hirose, E. et al.
A new 3-axes magnetic field measurement
system based on the Hall elements
IEEE Trans. Appl. Supercond. Vol. 14, p. 1814
(2004)
A-036
Tanaka, K.H. et al.
Radiation Resistant magnets for the J-PARC
IEEE Trans. Appl. Supercond. Vol. 16, p. 172(2006)
A-037
Hirose, E. et al.
The Beam-Handling Magnet System for the
J-PARC Neutrino Beam LineIEEE Trans. Appl. Supercond. Vol. 16, p. 1342
(2006)
A-038
Takahashi, H. et al.
Magnet Operation in vacuum for High
Radiation Environment near Production
TargetIEEE Trans. Appl. Supercond. Vol. 16, p. 1346
(2006)
A-039
Hirose, E. et al.
Shield Penetrating Water Cooled Bus Ducts
for Radiation Resistant Magnets at J-PARC,
IEEE Trans. Appl. Supercond. Vol. 18, p. 1439
(2008)

A-042
Futakawa, M. et al.
Erosion damage on solid boundaries incontact with liquid metals by impulsive
pressure injection
Int. J. Impact Eng. Vol. 28, p. 123 (2003)
A-043
Takahashi, N. et al.
Neutron spin-echo studies on poly(vinyl
alcohol) gels during melting process
ISSP Activity Report on Neutron scattering
Research; Experimental Reports (CD-ROM) 13(2006)
A-044
Kanaya, T. et al.
Neutron Spin-echo Studies on Crossover fromSingle Chain Motion to Collective Dynamics
ISSP Activity Report on Neutron scattering
Research; Experimental Reports (CD-ROM) 13(2006)
A-045
Kiyanagi, Y. et al.
Nuclear science and engineering expected
in high-intensity proton accelerator facility(J-PARC)
J. At. Energy Soc. Jpn. Vol. 46, p. 173 (2004)
A-046
Futakawa, M.
Impact erosion by pressure wave propagation
in mercury target for pulsed spallation
neutron source
J. At. Energy Soc. Jpn. Vol. 47, p. 530 (2005)
A-047
Shibata, T.
Utilization of radiation and its perspectiveThe trend of radiation usage in industrial andmedical fieldsJ. At. Energy Soc. Jpn. Vol. 50, p. 586 (2008)
A-048
Okamura, K. et al.
SiC-based ceramic fibers prepared via
organic-to-inorganic conversion process; A
ReviewJ. Ceram. Soc. Japan Vol. 114, p. 445 (2006)

A-051
Teshigawra, M. et al.
Gas yield and mechanical property of super
insulator (polyimide and polyester) after g ray
irradiation
J. Cryo. Soc. Jpn. Vol. 41, p. 99 (2006)
A-052
Kato, T. et al.
Spallation Neutron Source at J-PARC and Its
Cryogenic Hydrogen System
J. Cryo. Soc. Jpn. Vol. 42, p. 244 (2007)
A-053
Kato, T. et al.
Safety Design of the Cryogenic Hydrogen
System at J-PARC
J. Cryo. Soc. Jpn. Vol. 42, p. 255 (2007)
A-054
Tatsumoto, H. et al.
Cryogenic Hydrogen System for a Spallation
Neutron Source in J-PARC
J. Cryo. Soc. Jpn. Vol. 43, p. 409 (2008)
A-055
Kohara, S. et al.
The Disordered 3-dimensional structure
visualized by a combination of high-energy
synchrotron X-rays and computer simulations
J. Crystallogr. Soc. Jpn Vol. 47, p. 123 (2005)
A-056
Hoshikawa, A.
Observation of hydrogen in methane hydrateby neutron powder diffraction
J. Crystallogr. Soc. Jpn Vol. 49, p. 219 (2007)
A-057
Suzuki, J. et al.
New development in nanostructure
analysis by smaller-angle neutron scattering
instrument of J-PARC
J. Crystallogr. Soc. Jpn Vol. 50, p. 24 (2008)
A-058
Suzuya, K. et al.
Overview of the High-Intensity Total
Diffractometer at J-PARC and Structural StudyPublications     J-PARC Annual Report 200872
of Hydrogen Absorbing Materials
J. Crystallogr. Soc. Jpn Vol. 50, p. 29 (2008)
A-059
Shibata, K. et al.
Overview of the indirect-geometry neutron
inelastic scattering instrument DNA and its
research prospects
J. Crystallogr. Soc. Jpn Vol. 50, p. 46 (2008)
A-060
Ishikura, S. et al.
Thermal shock analysis of liquid-mercury
spallation target
J. High. Temp. Soc. Vol. 28, p. 329 (2002)
A-061
Miura, T. et al.
Tensile property changes due to phasedecomposition in duplex cast stainless steel
J. Iron Steel Inst. Jpn. Vol. 87, p. 31 (2001)
A-062
Aso, T.
Status of nuclear power plants in Japan andrelated activities
J. Jpn. Soc. Mech, Eng. Vol. 107, p. 43 (2004)
A-063
Hino, R. et al.
New-type neutron source with proton
accelerator and its application
J. Jpn. Soc. Mech, Eng. Vol. 107, p. 851 (2004)
A-064
Kohara, S. et al.
Unusual structure in vitreous forsterite
synthesized by an aero-acoustic levitation
techniqueJ. Jpn. Soc. Microgravity Appl. Vol. 22, p. 100(2005)
A-065
Kohara, S. et al.
Unusual structure in forsterite glass
synthesized by an aero-acoustic levitation
techniqueJ. Jpn. Soc. Synchrotron Radiation Res. Vol. 18,
p. 341 (2005)
A-066
Kameda, Y. et al.
Inelasticity effect on neutron scattering
intensities of the null-H2O
J. Neutron Res. Vol. 11, p. 153 (2003)
A-067
Suzuya, K. et al.
The Design of the neutron total scattering
spectrometer for hydrogenous materials at
J-PARC-JSNS
J. Neutron Res. Vol. 13, p. 123 (2005)

A-068
Kurata, Y. et al.
The Accelerator driven system strategy inJapan
J. Nucl. Mater. Vol. 301, p. 1 (2002)
A-069
Kurata, Y. et al.
Corrosion studies in liquid Pb-Bi alloy at
JAERI; R&D program and first experimental
results
J. Nucl. Mater. Vol. 301, p. 28 (2002)
A-070
Kawai, M. et al.
R&D of a MW-class solid-target for spallation
neutron source
J. Nucl. Mater. Vol. 318, p. 35 (2003)

materials in pulsed liquid metal targets bysurface hardening
J. Nucl. Mater. Vol. 343, p. 92 (2005)
A-079
Soyama, H. et al.
Estimation of pitting damage induced bycavitation impacts
J. Nucl. Mater. Vol. 343, p. 116 (2005)
A-080
Makimura, S. et al.
The present status of R&D for the muontarget at J-PARC: The development of silverbrazing method for graphite
J. Nucl. Mater. Vol. 377, p. 28 (2008)

A-071
Kikuchi, K. et al.
R&D on mercury target pitting issue
J. Nucl. Mater. Vol. 318, p. 84 (2003)

A-081
Kasugai, Y. et al.
Measurement of activation cross sections
for mercury isotopes in the neutron energy
range between 13.4 and 14.9MeV
J. Nucl. Sci. Technol. Vol. 38, p. 1048 (2001)

A-072
Ishikura, S. et al.
Bubble dynamics in the thermal shockproblem of the liquid metal target
J. Nucl. Mater. Vol. 318, p. 113 (2003)

A-082
Kritmaitree, P.
Analytical study of volumetric scroll pump for
liquid hydrogen circulating system
J. Nucl. Sci. Technol. Vol. 39, p. 101 (2002)

A-073
Kikuchi, K. et al.
Corrosion-erosion test of SS316 in flowing
Pb-Bi
J. Nucl. Mater. Vol. 318, p. 348 (2003)

A-083
Kai, T. et al.
Optimization of coupled hydrogen moderator
for a short pulse spallation source
J. Nucl. Sci. Technol. Vol. 39, p. 120 (2002)

A-074
Li, J.-F. et al.
Strength proof evaluation of diffusion-jointed
W/Ta interfaces by small punch test
J. Nucl. Mater. Vol. 321, p. 129 (2003)

A-084
Oigawa, H. et al.
Experiments and analyses on sodium void
reactivity worth in uranium-free fast reactor
at FCAJ. Nucl. Sci. Technol. Vol. 39, p. 729 (2002)

A-075
Kurata, Y. et al.
Excellent corrosion resistance of 18Cr-20Ni5Si steel in liquid Pb-Bi
J. Nucl. Mater. Vol. 325, p. 217 (2004)
A-076
Kurata, Y. et al.
Corrosion behavior of Al-surface-treatedsteels in liquid Pb-Bi in a pot
J. Nucl. Mater. Vol. 335, p. 501 (2004)
A-077
Miyake, Y. et al.
An edge cooled graphite target for J-PARC
Muon Science Facility
J. Nucl. Mater. Vol. 343, p. 21 (2005)
A-078
Koppitz, T. et al.
Improved cavitation resistance of structural

A-085
Harada, M. et al.
Neutronic optimization of premoderator andreflector for decoupled hydrogen moderator
in 1MW spallation neutron source
J. Nucl. Sci. Technol. Vol. 39, p. 827 (2002)
A-086
Nishihara, K. et al.
A New static and dynamic one-point equation
and analytic and numerical calculations for a
subcritical system
J. Nucl. Sci. Technol. Vol. 40, p. 481 (2003)
A-087
Futakawa, M. et al.
Pitting damage formation up to over 10
million cycles; Off-line test by MIMTM
J. Nucl. Sci. Technol. Vol. 40, p. 895 (2003)

J-PARC Annual Report 2008     Publications

73
A-088
Tsujimoto, K. et al.
Neutronics design for lead-bismuth cooled
accelerator-driven system for transmutationof minor actinide
J. Nucl. Sci. Technol. Vol. 41, p. 21 (2004)
A-089
Kinoshita, H. et al.
Experiments on mercury circulation system
for spallation neutron target
J. Nucl. Sci. Technol. Vol. 41, p. 376 (2004)
A-090
Futakawa, M. et al.
Damage diagnostic of localized impact
erosion by measuring acoustic vibration
J. Nucl. Sci. Technol. Vol. 41, p. 1059 (2004)
A-091
Ohno, S. et al.
Experimental investigation of lead-bismuth
evaporation behavior
J. Nucl. Sci. Technol. Vol. 42, p. 593 (2005)
A-092
Takei, H. et al.
Derivation of simple evaluation method
for thermal shock damage on accelerator
materials caused by out-of-control beampulses and its application to J-PARC
J. Nucl. Sci. Technol. Vol. 42, p. 1032 (2005)
A-093
Tsujimoto, K. et al.
Research and development program on
accelerator driven subcritical system in JAEA
J. Nucl. Sci. Technol. Vol. 44, p. 483 (2007)
A-094
Kogawa, H. et al.
Dynamic response of mercury subjected topressure wave
J. Nucl. Sci. Technol. Vol. 44, p. 523 (2007)

J. Nucl. Sci. Technol. Vol. 45, p. 698 (2008)
A-098
Futakawa, M. et al.
Mitigation technologies for damage induced
by pressure waves in high-power mercury
spallation neutron sources I-Bubbling effectto reduce pressure waveJ. Nucl. Sci. Technol. Vol. 45, p. 1041 (2008)
A-099
Naoe, T. et al.
Lifetime Estimation of Microbubble in
Mercury
J. Nucl. Sci. Technol. Vol. 45, p. 1233 (2008)
A-100
Kohara, S. et al.
Intermediate-range order in vitreous SiO2 andGeO2J. Phys. Condens. Matter. Vol. 17, p. S77 (2005)
A-101
Inamura, Y. et al.
Transformation in intermediate-range
structure of vitreous silica under highpressure and temperature
J. Phys. Condens. Matter. Vol. 19, 415104 (2007)
A-102
Suzuya, K. et al.
Structural studies of disordered materials
using high-energy x-ray diffraction fromambient to extreme conditions
J. Phys. Condens. Matter. Vol. 19, 506101 (2007)
A-103
Sawada, S.
Status and plan of J-PARC
J. Phys. G: Nucl. Part. Phys. Vol. 35, p. 104029(2008)A-095
Wakui, T. et al.
Failure probability estimation of multi-walled
vessels for mercury target
J. Nucl. Sci. Technol. Vol. 44, p. 530 (2007)

A-104
Itoh, S. et al.
High-energy resolution inelastic neutron
scattering experiment on magnetic fracton
dispersion in near-percolating threedimensional Heisenberg antiferromagnet,
RbMn0,4Mg0.6F3
J. Phys. Soc. Jpn. Vol. 74, p. 279 (2005)

A-096
Kogawa, H. et al.
Microbubble Formation at a Nozzle in Liquid
Mercury
J. Nucl. Sci. Technol. Vol. 45, p. 525 (2008)

A-105
Kajimoto, R. et al.
Spin wave and orbital ordering in the C-type
antiferromagnetic phase of Nd1-xSrxMnO3
J. Phys. Soc. Jpn. Vol. 74, p. 502 (2005)

A-097
Futakawa, M. et al.
Mitigation Technologies for Damage Induced
by Pressure Waves in High-Power Mercury
Spallation Neutron Sources (I) -Material
Surface Improvement-

A-106
Kajimoto, R. et al.
R-dependence of spin exchange interactions
in RMnO3 (R = Rare-Earth Ions)
J. Phys. Soc. Jpn. Vol. 74, p. 2430 (2005)

A-107
Ikeda, Y. et al.
Experiments for accelerator driven nuclear
transmutation under the JAERI-KEK joint
project of high intensity proton accelerator
J. Plasma Fusion Res. Vol. 77, p. 1128 (2001)
A-108
Suzuya, K. et al.
Structural Analysis of Materials using Pulsed
Neutrons at J-PARC
J. Plasma Fusion Res. Vol. 84, p. 323 (2008)
A-109
Futakawa, M. et al.
Hardening effect on impact erosion ininterface between liquid and solid metals
J. Soc. Mater. Sci. Jpn. Vol. 53, p. 283 (2004)
A-110
Naoe, T. et al.
Pitting damage evaluation by liquid/solidinterface impact analysis
J. Soc. Mater. Sci. Jpn. Vol. 54, p. 1184 (2005)
A-111
Naoe, T. et al.
Fatigue strength degradation by pitting
damageJ. Soc. Mater. Sci. Jpn. Vol. 55, p. 944 (2006)
A-112
Naoe, T. et al.
Pitting Damage Morphology of Surface
Modified Material - Damage suppression bysurface hardening treatment J. Soc. Mater. Sci. Jpn. Vol. 57, p. 159 (2008)
A-113
Naoe, T. et al.
Bending Fatigue Strength of Surface Modified
Stainless Steel with Pitting Damage
J. Soc. Mater. Sci. Jpn. Vol. 57, p. 576 (2008)
A-114
Kamiya, J. et al.
Reduction of Outgassing for Suppressing
Electrical Breakdown in the Kicker Magnet of
J-PARCJ. Vac. Soc. Jpn. Vol. 50, p. 371 (2007)
A-115
Date, H. et al.
Impact behavior of mercury droplet
Journal of JSEM Vol. 2, p. 103 (2002)
A-116
Kogawa, H. et al.
Coupled behavior between structural bodyand liquid under impact loading
Journal of JSEM Vol. 2, p. 122 (2002)

Publications     J-PARC Annual Report 2008

74
A-117
Futakawa, M. et al.
Inverse problem on indentation load anddepth curve; Identification of material
constants by using a spherical indenter
Journal of JSEM Vol. 4, p. 222 (2004)
A-118
Naoe, T. et al.
Mechanical property evaluation of gradientsurface layer by inverse analysis using
spherical-contact multi layer model
Journal of JSEM Vol. 5, p. 15 (2005)
A-119
Kogawa, H.
Neutron Facility Group Center for Neutron
Facility Japan Atomic Energy ResearchInstitute
Journal of JSEM Vol. 5, p. 64 (2005)
A-120
Naoe, T. et al.
Erosion damage evaluation using acoustic
vibration induced by micro-bubble collapse
Journal of JSEM Vol. 5, p. 280 (2005)
A-121
Naoe, T. et al.
Bubble behavior in mercury cavitation
Journal of JSEM Vol. 6, p. 301 (2006)
A-122
Kogawa, H. et al.
Wettability Effect on Bubble Formation at
Orifice Type Nozzle
Journal of JSEM Vol. 7, p. 331 (2007)
A-123
Nakatsukasa, S. et al.
Development of crosslinked rubber material
for high radiation field
Journal of the Society of Rubber Industry,
Japan. Nippon Gomu Kyokaishi Vol. 79, p. 429(2006)
A-124
Kikuchi, K. et al.
Lead-bismuth eutectic compatibility withmaterials in the concept of spallation target
for ADS
JSME Int. J., Ser. B Vol. 47, p. 332 (2004)
A-125
Kobayashi, T. et al.
Development of digital low level rf system
Kasokuki Vol. 5, p. 127 (2008)
A-126
Hasegawa, K.
Report on the third ACFA-HPPA miniworkshop
Kasokuki Vol. 5, p. 258 (2008)

A-127
Meigo, S. et al.
Beam Commissioning of the J-PARC MLF
Kasokuki Vol. 5, p. 327 (2008)
A-128
Ao, H. et al.
LINAC08 Report
Kasokuki Vol. 5, p. 342 (2008)
A-129
Suzuya, K. et al.
Atomic-scale Structure of Polymer-route
Si-C-O Fibers Observed by Synchrotron
Radiation X-ray Diffraction
Key Eng. Mater. Vol. 352, p. 65 (2007)
A-130
Nagamiya, S.
Overview of J-PARC, in “Particle and Nuclear
Phyusics at J-PARC”
Lecture Notes in Physics, Springer, Vol. 781, 1-16
(2009) (T. Sato, T. Takahashi, and K. Yoshimura,editors )A-131
Ogino, Y. et al.
Crystallization of isotactic polypropylene
under shear flow observed in a wide spatial
scale
Macromolecules Vol. 39, p. 7617 (2006)
A-132
Kikuchi, K. et al.
Introduction of J-PARC
Maintenology Vol. 6, p. 49 (2008)
A-133
Mehmood, M. et al.
Electro-deposition of tantalum on tungsten
and nickel in LiF-NaF-CaF2 melt containing
K2TaF7; Electrochemical study
Mater. Trans. Vol. 44, p. 259 (2003)
A-134
Kikuchi, K. et al.
Study on swelling for Austenitic steel
irradiated by 580 MeV proton
Materia Jpn. Vol. 47, p. 635 (2008)

A-137
Ikeda, Y.
1-MW pulse Spallation Neutron Source(JSNS)of J-PARC
Neutron News Vol. 16, p. 20 (2005)
A-138
Haga, K. et al.
Water flow experiments and analyses on the
cross-flow type mercury target model withthe flow guide plates
Nucl. Eng. Des. Vol. 210, p. 157 (2001)
A-139
Sasa, T. et al.
Research and development on acceleratordriven transmutation system at JAERI
Nucl. Eng. Des. Vol. 230, p. 209 (2004)
A-140
Sakaki, H. et al.
Beam energy gain fluctuation in a linac
caused by RF system noise
Nucl. Instrum. Methods Phys. Res. A Vol. 480, p.
403 (2002)
A-141
Sakaki, H. et al.
Simulation of electron beam energy
fluctuation in a linac; Filtering of the utility
parameter’s information by ensemble
averageNucl. Instrum. Methods Phys. Res. A Vol. 480, p.
412 (2002)
A-142
Nagamiya, S.
KEK/JAERI Joint Project on high intensity
proton accelerators
Nucl. Instrum. Methods Phys. Res. A Vol. 503, p.
34 (2001)
A-143
Matsubayashi, M. et al.
Development of a fast neutron radiography
converter using wavelength-shifting fibers
Nucl. Instrum. Methods Phys. Res. A Vol. 510, p.
325 (2003)

A-135
Kohara, S. et al.
High-energy synchrotron x-ray diffraction
studies on disordered materials - fromambient condition to an extreme condition
Molten salts Vol. 50, p. 71 (2007)

A-144
Masaoka, S. et al.
Optimization of a micro-strip gas chamberas two-dimensional neutron detector using
Gadolinium converter
Nucl. Instrum. Methods Phys. Res. A Vol. 513, p.
538 (2003)

A-136
Shibata, K. et al.
Lattice dynamics of the Zn-Mg-Sc icosahedral
quasicrystal and its Zn-Sc periodic 1/1
approximant
Nature Mat. Vol. 6, p. 977 (2007)

A-145
Kai, T. et al.
Coupled hydrogen moderator optimization
with ortho/para hydrogen ratio
Nucl. Instrum. Methods Phys. Res. A Vol. 523, p.
398 (2004)

J-PARC Annual Report 2008     Publications

75
A-146
Harada, M. et al.
Neutronic studies on decoupled hydrogenmoderator for a short-pulse spallation source
Nucl. Instrum. Methods Phys. Res. A Vol. 539, p.
345 (2005)
A-147
Nakamura, T. et al.
Operation of a capillary plate under highpressure 3He for neutron detection
Nucl. Instrum. Methods Phys. Res. A Vol. 539, p.
363 (2005)
A-148
Kai, T. et al.
Neutronic performance of rectangular andcylindrical coupled hydrogen moderators inwide-angle beam extraction of low-energy
neutrons
Nucl. Instrum. Methods Phys. Res. A Vol. 550, p.
329 (2005)
A-149
Ooi, M. et al.
Measurements of the change of neutronic
performance of a hydrogen moderator at
Manuel Lujan Neutron Scattering Center due
to conversion from ortho- to para-hydrogen
state
Nucl. Instrum. Methods Phys. Res. A Vol. 566, p.
699 (2006)
A-150
Harada, M. et al.
Neutronics of a poisoned para-hydrogenmoderator for a pulsed spallation neutron
sourceNucl. Instrum. Methods Phys. Res. A Vol. 574, p.
407 (2007)
A-151
Ohkawa, T. et al.
Dispersion matching at the injection from ahigh-intensity linac to a circular accelerator
Nucl. Instrum. Methods Phys. Res. A Vol. 576, p.
274 (2007)
A-152
Kobayashi, T. et al.
RF Reference Distribution System for J-PARC
Linac
Nucl. Instrum. Methods Phys. Res. A Vol. 585, p.
12 (2008)
A-153
Naoe, T. et al.
Cavitation damage reduction by microbubble
injection
Nucl. Instrum. Methods Phys. Res. A Vol. 586, p.
382 (2008)

A-154
Takahashi, N. et al.
A Novel Time-Spatial-Focusing MomentumCorrection Analyzer for the NearBackscattering Spectrometer DIANA at
J-PARC
Nucl. Instrum. Methods Phys. Res. A Vol. 587, p.
350 (2008)

ComplexNucl. Phys. A Vol. 782, 434 (2007)

A-155
Ohkawa, T. et al.
Macro-particle simulation study on transverse
halo collimator for J-PARC linac
Nucl. Instrum. Methods Phys. Res. A Vol. 589, p.
1 (2008)

A-165
Shimomura, K. et al.
Design Study of Muon Beam from J-PARC 3
GeV Rapid Synchrotron
Nucl. Phys. B Proc. Supple. Vol. 155, p. 343 (2006)

A-156
Oikawa, K. et al.
Design and Application of NOBORU -NeutrOn
Beam-line for oBservation and Reserch Use at
J-PARC
Nucl. Instrum. Methods Phys. Res. A Vol. 589, p.
310 (2008)
A-157
Harada, M. et al.
Pulse characteristics of epi-thermal neutrons
from a spallation source
Nucl. Instrum. Methods Phys. Res. A Vol. 597, p.
242 (2008)
A-158
Nagamiya, S.
J-PARC project
Nucl. Instrum. Methods Phys. Res. B Vol. 214, p.
216 (2004)
A-159
Ieiri, M. et al.
Electrostatic separator for K1.8 beam line at
J-PARC
Nucl. Instrum. Methods Phys. Res. B Vol. 266, p.
4205 (2008)
A-160
Nagamiya, S.
Physics prospects with high intensity proton
accelerator (J-PARC) at Tokai
Nucl. Phys. A Vol. 721, p. 190 (2003)
A-161
Nagamiya, S.
Current status of the J-PARC project
Nucl. Phys. A Vol. 755, p. 219 (2005)
A-162
Nagamiya, S.
J-PARC Project in Japan
Nucl. Phys. A Vol. 774, p. 895 (2006)
A-163
Sawada, S.
J-PARC, Japan Proton Accelerator Research

A-164
Miyake, Y. et al.
J-PARC Muon Science Facility with use of 3
GeV Proton Beam
Nucl. Phys. B Proc. Supple. Vol. 149, p. 393 (2005)

A-166
Tsujimoto, K. et al.
Validation of minor actinide cross sections
by studying samples irradiated for 492 daysat the dounreay prototype fast reactor, 2;
Burnup calculations
Nucl. Sci. Eng. Vol. 144, p. 129 (2003)
A-167
Maekawa, F. et al.
Analysis of neutronic experiment on asimulated mercury spallation neutron target
assembly bombarded by Giga-electron-Volt
protons
Nucl. Sci. Eng. Vol. 150, p. 99 (2005)
A-168
Tsujimoto, K. et al.
Feasibility of lead-bismuth-cooled
accelerator-driven system for minor-actinide
transmutation
Nucl. Technol. Vol. 161, p. 315 (2008)
A-169
Nagamiya, S.
High Energy Accelerator Research
Organization in Japan (KEK)
Nucl.Phys.News 15, 5 (2005), AAPPS Bull.15, 18(2005)
A-170
Shobuda, Y. et al.
Coupling Impedances of a Gap in Vacuum
ChamberPhys. Rev. ST Accel. Beams Vol. 10, 044403(2007)
A-171
Shobuda, Y. et al.
The Generalized Napoly Integral to Compute
Wake Potentials in Axisymmetric Structure
Phys. Rev. ST Accel. Beams Vol. 11, 011003(2008)
A-172
Tamura, F. et al.
Dual-harmonic auto voltage control for the
rapid cycling synchrotron of the Japan ProtonPublications     J-PARC Annual Report 200876
Accelerator Research Complex
Phys. Rev. ST Accel. Beams Vol. 11, 072001(2008)

Radiation Safety on Accelerator Facilities(I)(Radiation safety and management at J-PARC)
Radioisotopes Vol. 57, p. 253 (2008)

A-173
Miyake, Y. et al.
Status of J-PARC muon science facility at theyear of 2005
Physica B: Condensed Matter. Vol. 374-375, p.
484 (2006)

A-182
Watababe, N.
Neutronics of pulsed spallation neutron
sources
Rep. Prog. Phys Vol. 66, p. 339 (2003)

A-174
Takahashi, N. et al.
Quantum Beam Studies on Polymer
Crystallization under Flow
Polym. J. Vol. 39, p. 1085 (2007)

A-183
Nakamura, T. et al.
Cryogenic neutron detector comprisingan InSb semiconductor detector and asupercritical helium-3 gas converter
Rev. Sci. Instrum. Vol. 75, p. 340 (2004)

A-175
Takahashi, N. et al.
Gelation-Induced Phase Separation ofPoly(vinyl alcohol) in Mixed Solvents ofDimethyl Sulfoxide and Water
Polymer Vol. 47, p.5669 (2006)

A-184
Yamagishi, H. et al.
Novel instrument system for discriminating
secondary particles in high-spatial-resolution
neutron detection
Rev. Sci. Instrum. Vol. 75, p. 2340 (2004)

A-176
Fujii, Y.
Challenging neutron industrial application
Radiation and industries Vol. 107, p. 2 (2005)

A-185
Tanaka, H. et al.
A Two-dimensional gas detector withindividual readouts for neutron detection
with a high spatial resolution and fast
temporal response
Rev. Sci. Instrum. Vol. 76, p. 093302 (2005)

A-177
Arai, M.
Present status and future of neutron researchin the world
Radiation and industries Vol. 107, p. 40 (2005)
A-178
Oyama, Y. et al.
Neutron facility at high intensity proton
accelerator project
Radiation and industries Vol. 107, p. 45 (2005)
A-179
Morii, Y. et al.
Industrial application system of neutrons at
J-PARC
Radiation and industries Vol. 107, p. 52 (2005)
A-180
Oyama, Y.
Development of high intensity pulsed
neutron source and its application
Radioisotopes Vol. 51, p. 219 (2002)
A-181
Nakashima, H. et al.

A-186
Arai, M.
Current trend of proton accelerator
development in the world
Sci. Tech. J. Vol. 14, p. 18 (2005)

Surface Coat. Technol. Vol. 201, p. 6035 (2007)
A-190
Fujii, Y.
Neutron science and high pressure; Inelastic
neutron scattering associated with pressureinduced phase transition
The Review of high pressure science andtechnology Vol. 14, p. 113 (2004)
A-191
Ishikura, S. et al.
Micro pit formation by mercury-spherecollision
Trans. At. Energy Soc. Jpn. Vol. 3, p. 59 (2004)
A-192
Aso, T. et al.
Experimental investigation of characteristics
of impinging jet heat transfer and application
to JSNS moderator design
Trans. At. Energy Soc. Jpn. Vol. 5, p. 179 (2006)
A-193
Hayashi, K. et al.
Thermal-hydraulic experiment on beam
window for developing the acceleratordriven transmutation system
Trans. At. Energy Soc. Jpn. Vol. 7, p. 44 (2008)
A-194
Hattori, H. et al.
Direct numerical simulation of turbulent
heat transfer in plane impinging jet; Effects
of impingement distance on heat transfer in
confined space
Trans. Jpn. Soc. Mech. Eng. Ser. B Vol. 70, p. 1919
(2004)A-187
Oyama, Y.
Progress of high-intensity proton accelerator
project; J-PARC, Japan Proton Accelerator
Research Complex
Science and Technology in Japan Vol. 24, p. 2

A-195
Soyama, H. et al.
Estimation of incubation time of cavitation
erosion for various cavitating conditions
Tribology Letters Vol. 17, p. 27 (2004)

A-188
Kohara, S. et al.
Glass formation at the limit of insufficient
network formers
Science Vol. 303, p. 1649 (2004)

A-196
Soyama, H. et al.
A Predistion method of incubation period on
cavitation erosion
Turbomachinery Vol. 34, p. 336 (2006)

A-189
Zherebtsov, S. et al.
Erosion damage of laser alloyed stainlesssteel in mercury

A-197
Futakawa, M.
MIMTM, Magnetic Impact Testing Machine
Vibration Technologies Vol. 10, p. 22 (2004)

J-PARC Annual Report 2008     Publications

77

Conference Reports
C-001
Aoki, K. et al.
Development of New Cooling System Using
Gm/jt Cryocoolers for the SKS Magnet
ADVANCES IN CRYOGENIC ENGINEERING:
Transactions of the Cryogenic Engineering
Conference - CEC, Vol. 52. AIP Conf. Proc. Vol.
985, p. 349
C-002
Tatsumoto, H. et al.
Thermal Stress Analysis for a Transfer Line of
Hydrogen Moderator in J-Parc
ADVANCES IN CRYOGENIC ENGINEERING:
Transactions of the Cryogenic Engineering
Conference - CEC, Vol. 52. AIP Conf. Proc. Vol.
985, p. 1225
C-003
Tatsumoto, H. et al.
FORCED CONVECTION HEAT TRANSFER
OF SUBCOOLED LIQUID NITROGEN IN
HORIZONTAL TUBEADVANCES IN CRYOGENIC ENGINEERING:
Transactions of the Cryogenic Engineering
Conference - CEC, Vol. 53, AIP Conf. Proc. Vol.
985, p. 665
C-004
Nagamiya, S.
J-PARC and Spin Physics
AIP Conf. Proc. Vol. 915, p. 180 (2007)
C-005
Futakawa, M. et al.
Visualization of mercury cavitation bubble
collapse
Experimental Analysis of Nano and Engineering
Materials and Structures, Proceedings of the
13th International Conference on Experimental
Mechanics, Alexandroupolis, Greece, July 1–6,
2007, p. 301
C-006
Sasaki, K. et al.
Magnetic Field Measurement System inSuperconducting Combined Function
Magnets for the J-PARC Neutrino Beam LineIEEE Trans. Appl. Superconductivity, Vol. 18, p.
142
C-007
Kamiya, J. et al.
Magnetic field mapping and excitation test in
vacuum for the kicker magnet in J-PARC RCSIEEE Trans. Appl. Superconductivity, Vol. 18, p.
293
C-008
Yoshimoto, M et al.

Field Measurement of DC Magnets at 3GEVRCS in J-PARC
IEEE Trans. Appl. Superconductivity, Vol. 18, p.
301
C-009
Tani, N. et al.
Design and Fabrication of an RCS Magnet CoilUsing a Stranded Conductor of J-PARC 3-GeV
SynchrotronIEEE Trans. Appl. Superconductivity, Vol. 18, p.
314
C-010
Tatsumoto, H. et al.
Numerical Analysis of Forced Convection
Heat Transfer of Subcooled Liquid Nitrogen
IEEE Trans. Appl. Superconductivity, Vol. 18, p.
1483
C-011
Nakahara, K. et al.
Design of the Large Acceptance Muon
Beamline at J-PARC
NEUTRINO FACTORIES, SUPERBEAMS ANDBETABEAMS: 9th International Workshop
on Neutrino Factories, Superbeams, andBetabeams - NuFact 07. AIP Conference
Proceedings, Volume 981, p. 312
C-012
Shimomura, K. et al.
Status of Decay/Surface Muon Channel for
the Muon Science in J-PARC
NEUTRINO FACTORIES, SUPERBEAMS ANDBETABEAMS: 9th International Workshop
on Neutrino Factories, Superbeams, andBetabeams - NuFact 07. AIP Conference
Proceedings, Volume 981, p. 381
C-013
Arai, M.
J-PARC and Prospective Neutron Science
NEUTRON AND X-RAY SCATTERING 2007: The
International Conference. AIP Conference
Proceedings, Volume 989, p. 11
C-014
Nagamiya, S.
J-PARC Program Overview
Nucl. Phys. Vol. A827, p. 179c (2009)
C-015
Nakane, Y. et al.
Monte Carlo Calculations for the Shielding
Design of Beam Injection and Extraction
Areas at the 3-GeV Synchrotron in J-PARC
Nucl. Technol. Vol. 168, p. 519

C-016
Masukawa, F. et al
Estimation of Radioactivity Produced in
Cooling Water at High-Intensity Proton
Accelerator Facility
Nucl. Technol. Vol. 168, p. 680
C-017
Bucheeri, A. et al.
Fabrication of a bubbler nozzle for microbubble injection in liquid mercury
5th International Conference on Porous Metals
and Metallic Foams (MetFoam 2007), A104,
Montreal, Canada, September 5-7, p. 189
C-018
Naito, F.
Present Status of J-PARC
Proc. of APAC 2007, Raja Ramanna Centre forAdvanced Technology (RRCAT), Indore, India, p.
1
C-019
Yoshioka, M. et al.
Installation and Radiation Maintenance
Scenario for J-PARC 50 GeV Synchrotron
Proc. of APAC 2007, Raja Ramanna Centre forAdvanced Technology (RRCAT), Indore, India, p.
247
C-020
Koseki, T. et al.
Present Status of J-PARC MR Synchrotron
Proc. of APAC 2007, Raja Ramanna Centre forAdvanced Technology (RRCAT), Indore, India, p.
259
C-021
Shobuda, Y. et al.
Degradation of the Beam passing throughIdle Coupled Cavities
Proc. of APAC 2007, Raja Ramanna Centre forAdvanced Technology (RRCAT), Indore, India, p.
369
C-022
Shirakata, M.J. et al.
The Magnet Alignment Method For The
J-PARC Main Ring
Proc. of APAC 2007, Raja Ramanna Centre forAdvanced Technology (RRCAT), Indore, India, p.
752
C-023
Toyoda, A. et al.
OPTICAL TRANSITION RADIATION MONITORFOR HIGH INTENSITY PROTON BEAM AT THE
J-PARC
Proc. of DIPAC 2007, p. 30

Publications     J-PARC Annual Report 2008

78
C-024
Morishita, T. et al.
ALIGNMENT OF CAVITIES AND MAGNETS AT
J-PARC LINAC
Proc. of The 10th International Workshop on
Accelerator Alignment, KEK, Tsukuba, 11-15
February 2008, THP2-05
C-025
Kaminaga, M. et al.
Present Status of Materials and Life Science
Experimental Facility (MLF) and Spallation
Neutron Source Related Components.
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 5
C-026
Ikegami, A. et al
Commissioning Experience and Plans for
J-PARC Linac
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 61
C-027
Muto, S. et al.
Development of Permanent Magnet
Quadrupole Lenses for Neutron Polarization
and Transport
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 114
C-028
Maekawa, F. et al.
Experimental Program at a Neutron BeamLine NOBORU in JSNS
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 118
C-029
Maruyama, R. et al.
Supermirror Coatings for the New Spallation
Source J - PARC
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 197
C-030
Kawai, M. et al.
A Plan for Novel Material Science Facility
integrating an All-ion Accelerator and a Small
Neutron Source
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,

2007, p. 201
C-031
Itoh, S. et al.
Recent Progress in Development andConstruction of High Resolution Chopper
Spectrometer a J-PARC
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 365
C-032
Takahashi, N. et al.
Advanced Neutron Guide Geometry for the
Near-backscattering Spectrometer at J-PARC.
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 373
C-033
Kamiyama, T. et al.
Study of Neutron Tomography Using Neutron
Resonance Absorption
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 385
C-034
Okuno, K. et al.
Development of Neutron Shielding ConcreteContaining Colemanite and Peridotite
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 431
C-035
Teshigawara, M. et al.
Fabrication Status of Moderator-reflector in
JSNS.
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 469
C-036
Kai, T. et al.
Measurements of Spatial Distribution and
Pulse Shapes of Neutrons from a Cylindrical
Coupled Para-hydrogen Moderator.
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 482
C-037
Hasegawa, S. et al.
Estimation of Pressure Change Based onHybrid Control System in JSNS Hydrogen
Loop.

Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 497
C-038
Kikuchi, K. et al.
Thermal Shock Test of Ta-cladded W Solid
Target Model
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 529
C-039
Futakawa, M. et al.
R&D on Pressure-wave Mitigation Technology
in Mercury Targets.
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 547
C-040
Kogawa, H. et al.
Development on Controlled Micro-Gas
Bubble Formation in Mercury Targets
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 566
C-041
Haga, K. et al.
Present Status of JSNS Mercury Target
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 577
C-042
Oikawa, K. et al.
Construction of the JSNS Shutter System
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 591
C-043
Harada, M. et al.
Nuclear Heating Calculation for JSNS
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 616
C-044
Arai, M. et al.
Summary of the Instrument Sessions
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 706

J-PARC Annual Report 2008     Publications

79
C-045
Hiroki, N. et al.
MULTI-WIRE PROFILE MONITOR FOR J-PARC
3GEV RCS
Proc. of the 18th Meeting of the Int.
Collaboration on Advanced Neutron Sources,
Dongguan, Guangdong, China, 25-29 April,
2007, p. 1131
C-046
Ikeda, Y.
J-PARC Status Update
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 1
C-047
Futakawa, M. et al.
Development of the Hg target in the J-PARC
neutron source
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 18
C-048
Miyake, Y. et al.
J-PARC muon source, MUSE
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 22
C-049
Oishi, R, et al.
Rietvelld analysis software for J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 34
C-050
Meigo, S. et al.
Beam Commissioning for Neutron and Muon
Facility at J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 41
C-051
Suzuki, S.Y. et al.
New pipelined data acquisition system for
mSR experiments at J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 53
C-052
Haga, K. et al.
Bubble flow simulations in target vessel
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 64

C-053
Maruyama, R. et al.
Development of high-reflectivity neutron
supermirrors using an ion beam sputtering
techniqueProc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 68
C-054
Sakai, K. et al.
Construction status of a general control
system of Materials and Life Science
Experimental Facility (MLF) at J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 75
C-055
Kinoshita, H. et al.
Remote handling devices in MLF
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 78
C-056
Hasegawa, S. et al.
Effect of hydrogen loop fluctuation on cold
neutron performance with hybrid control
system in JSNS
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 81
C-057
Oikawa, K. et al.
Engineering Design of JSNS Shutter System
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 84
C-058
Harada, M. et al.
Settlement of Materials and Life Sciences
Experimental Facility at J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 87
C-059
Takahashi, N. et al.
Study of the analyzer crystals for use in thenear-backscattering spectrometer DNA at
J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 91
C-060
Kogawa, H. et al.
Development on Mercury Pump for JSNS
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.

Methods Phys. Res. A Vol. 600 p. 97
C-061
Oku, T. et al.
Pulsed neutron beam control using amagnetic multiplet lensProc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 100
C-062
Satoh, S. et al.
Development of a readout system employing
high-speed network for J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 103
C-063
Shinohara, T. et al.
Design and performance analyses of the
new time-of-flight smaller-angle neutron
scattering instrument at J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 111
C-064
Kawamura, N. et al.
Design strategy for devices under highradiation field in J-PARC muon facility
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 114
C-065
Ooi, M. et al.
Developmental status of a server system for
the MLF general control system
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 120
C-066
Suzuki, J. et al.
Object-oriented data analysis framework forneutron scattering experiments
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 123
C-067
Ebisawa, T. et al
Shield evaluation of cold neutron curved
guide tubes for J-PARC neutron resonancespin echo spectrometers
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 126
C-068
Nakahara, K. et al.
The super omega muon beamline at J-PARC

Publications     J-PARC Annual Report 2008

80
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 132
C-069
Takeshita, S. et al.
Development of positron detector for mSR
based on multi-pixel photon counter
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 139
C-070
Makimura, S. et al.
Present status of construction for the muontarget in J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 148
C-071
Wakui, T. et al.
Effects of pitting damage and repeatedstresses on lifetime of mercury target
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 150
C-072
Strasser, P. et al.
Alignment and shields in the M2 primary
proton beamline at J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 154
C-073
Sakasai, K. et al.
Development of neutron detector forengineering materials diffractometer at
J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 157
C-074
Nakamura, T. et al.
Evaluation of the performance of a fibrecoded neutron detector with a ZnS/10B2O3
ceramic scintillator
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 164
C-075
Fujimori, H. et al.
Radiation resistant magnets for the J-PARC
muon facility
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 170

C-076
Nakayoshi, K. et al.
Development of a data acquisition subsystem using DAQ-Middleware
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 173

C-084
Shamoto, S. et al.
Total scattering of disordered crystalline
functional materials
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 229

C-077
Kai, T. et al.
User’s Beam Interlock System at the Materials
and Life Science Experimental Facility of
J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 176

C-085
Wakimoto, S. et al.
Neutron scattering study of the relaxor
ferroelectric K1-xLixTaO3
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 254

C-078
Higemoto, W. et al.
J-PARC muon control system
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 179
C-079
Higemoto, W. et al.
JAEA-ASRC mSR project at J-PARC MUSE
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 182
C-080
Kajimoto, R. et al.
Study of the neutron guide design of the
4SEASONS spectrometer at J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 185
C-081
Shimomura, K. et al.
Superconducting muon channel at J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 192
C-082
Ohhara, T. et al.
Development of data processing software
for a new TOF single crystal neutron
diffractometer at J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 195
C-083
Hosoya, T. et al.
Development of a new detector and DAQ
systems for iBIX
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 217

C-086
Tatsumoto, H. et al.
Design of Hydrogen Vent Line for the
Cryogenic Hydrogen System in J-PARC
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 269
C-087
Maekawa, F. et al.
NOBORU: J-PARC BL10 for Facility Diagnostics
and Its Possible Extension to Innovative
Instruments
Proc. of the 1st J-PARC Int. Symp. on Pulsed
Neutron and Muon Sciences, Nucl. Instrum.
Methods Phys. Res. A Vol. 600, p. 335
C-088
Ishida, T. et al.
Neutrino Facility at J-PARC: Construction
Status and…
Future Prospects
Proc. of the 3rd International Workshop on a
Far Detector in Korea for the J-PARC Neutrino
Beam, p. 23
C-089
Takada, H.
Accelerator based facility design inassociation with nuclear data
Proc. of the Int. Conf. on Nucl. Data for Sci. andTechnol. April 22-27, 2007, Nice, France, eds
O.Bersillon, F.Gunsing, E.Bauge, R.Jacqmin, andS.Leray, EDP Sciences, 2008, p. 23
C-090
Nakamoto, T.
STATUS OF THE SUPERCONDUCTING MAGNETSYSTEM FOR THE J-PARC NEUTRINO BEAM
LINE
Proc. of Workshop on Accelerator Magnet
Superconductors, Design and Optimization,
CERN, Geneva, Switzerland, 19 - 23 May 2008, p.
139
C-091
Ishida, T. et al.

J-PARC Annual Report 2008     Publications

81
NEUTRINO AND OTHER BEAM-LINES AT
J-PARC
Proceedings of 2007 Particle Accelerator
Conference (PAC ‘07) (Internet), p. 686
C-092
Sasa, T. et al.
Shielding analysis at the upper section ofaccelerator-driven system
Proceedings of 8th International Topical
Meeting on Nuclear Applications and Utilizationof Accelerators (AccApp ‘07), p. 628
C-093
Sasa, T. et al.
Conceptual study of actinide reformer using
high-power proton accelerator
Proceedings of 8th International Topical
Meeting on Nuclear Applications and Utilizationof Accelerators (AccApp ‘07), p. 904
C-094
Sasa, T. et al.
Current plan of J-PARC transmutation
experimental facility
Proceedings of 8th International Topical
Meeting on Nuclear Applications and Utilizationof Accelerators (AccApp ‘07), p. 949
C-095
Nakashima, H. et al.
Benchmark calculation for the J-PARC
shielding design
Proceedings of 8th International Topical
Meeting on Nuclear Applications and Utilizationof Accelerators (AccApp ‘07)
C-096
Yoshikawa, H. et al.
Current Status of the Control System for
J-PARC Accelerator Complex
Proceedings of ICALEPCS07, Knoxville,
Tennessee, USA, p. 62
C-097
Sako, H. et al.
Beam Commissioning Software and Datebase
for J-PARC LINAC
Proceedings of ICALEPCS07, Knoxville,
Tennessee, USA, p. 698
C-098
Harada, H. et al.
Current Status of Virtual Accelerator at J-PARC
3 GeV Rapid Cycling Synchrotron
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 215
C-099
Allen, C.K. et al.
XAL Online Model Enhancements for J-PARC
Commissioning and Operation
Proceedings of PAC07, Albuquerque, New

Mexico, USA, p. 218
C-100
Sugai, I. et al.
Development of Hybrid Type Carbon Stripper
Foils with High Durability at >1800K for RCS
of J-PARC
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 242
C-101
Takagi, A. et al.
Comparative Study on Lifetime of Stripper
Foil using 650keV H- Ion Beam
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 245
C-102
Sako, H. et al.
Development of Commissioning Software
System for J-PARC LINAC
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 257
C-103
Yamamoto, M. et al.
Longitudinal Particle Tracking of J-PARC RCS
for Synchronization
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 260
C-104
Shaw, R.W. et al.
Spallation Neutron Source (SNS) Diamond
Stripper Foil Development
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 620
C-105
T. Ishida for the Neutrino Beam-Line
Subgroup
NEUTRINO AND OTHER BEAM-LINES AT
J-PARC
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 686
C-106
T. Koseki and J-PARC MR Group
Status of J-PARC Main Ring Synchrotron
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 736
C-107
Sasaki, S. et al.
A Possibility for Using an APPLE Undulator
to Generate a Photon Beam with Transverse
Optical Modes
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1142
C-108
Akikawa, H. et al.
Profile Measurement and Transverse

Matching in J-PARC Linac
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1472
C-109
Ikegami, M. et al.
RF Amplitude and Phase Tuning of J-PARC
DTL
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1481
C-110
Tomizawa, M. et al.
Design of Dynamic Collimator for J-PARC
Main Ring
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1505
C-111
Tomizawa, M. et al.
New Beam Optics Design of Injection/Fast
Extraction/Abort Lines of J-PARC Main Ring
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1508
C-112
Yoshii, M. et al.
Present Status of J-PARC Ring RF Ring RF
Systems
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1511
C-113
Ao, H. et al.
Fabrication Status of ACS Accelerating
Modules of J-PARC Linac
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1514
C-114
Ito, T. et al.
High Power Conditioning of the DTL for
J-PARC
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1517
C-115
Morishita, T. et al.
The Precise Survey and the Alignment Resultsof the J-PARC Linac
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1520
C-116
Morishita, T. et al.
The DTL/SDTL Alignment of the J-PARC Linac
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1523
C-117
SAHA, P.K. et al.
Updated Simulation for the Nuclear
Scattering Loss Estimation at the RCS

Publications     J-PARC Annual Report 2008

82
Injection Area
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1526
C-118
Shen, G. et al.
RF Amplitude and Phase Tuning of J-PARC
SDTL
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1529
C-119
Yamamoto, M. et al.
High Power Test of MA Cavity for J-PARC RCS
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 1532
C-120
Fang, Z. et al.
RF Feedback Control Systems of the J-PARC
Linac
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 2101
C-121
Tamura, F. et al.
Development of the Beam Chopper Timing
System for Multi-Turn Injection to the J-PARC
RCS
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 2125
C-122
Kobayashi, T. et al.
Performance of J-PARC Linac RF System
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 2128
C-123
Schnase, A. et al.
MA Cavities for J-PARC with Controlled
Q-value by External Inductor

Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 2131
C-124
Kazuo Hasegawa for the J-PARC Linac
commissioning teamCommissioning of the J-PARC Linac
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 2619
C-125
Chin, Y.H. et al.
ABCI Progresses and Plans: Parallel
Computing and Transverse Napoly-Shobuda
IntegralProceedings of PAC07, Albuquerque, New
Mexico, USA, p. 3306
C-126
Ohkawa, T. et al.
Comparison of Trajectory Between Modelingand Experiment for J-PARC Linac
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 3324
C-127
Shobuda, Y. et al.
Extension of Napoly Integral for Transverse
Wake Potentials to General Axisymmetric
Structure
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 3333
C-128
Sato, S. et al.
Beam Position Monitor and its Calibration in
J-PARC LINAC
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 4072
C-129
Hotchi, H. et al.

Effects of Magnetic Field Tracking Errors on
Beam Dynamics at J-PARC RCS
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 4078
C-130
Satou, K. et al.
Development of a Beam Induced Heat-FlowMonitor for the Beam Dump of the J-PARC
RCS
Proceedings of PAC07, Albuquerque, New
Mexico, USA, p. 4084
C-131
Oguri, H. et al.
Development and operation of a Cs-free
J-PARC H− ion source
Proceedings of the 12th International
Conference on Ion Sources, Jeju, Korea, 2007,
Rev. Sci. Instrum. 79, 02A506
C-132
Fujii, Y.
Overview on neutron sources in Japan
Proceedings of the Joint Meeting of theInternational Conference on Neutron Optics(NOP2004) and the Third International
Workshop on Position-Sensitive Neutron
Detectors (PSND2004), Nucl. Instrum. Methods
Phys. Res. A Vol. 529, p. 1 (2004)
C-133
Takei, H. et al.
Comparison of beam trip frequencies
between estimation from current
experimental data of accelerators andrequirement from ADS transient analyses
Utilization and Reliability of High Power Proton
Accelerators (HPPA-5) Workshop Proceedings,
Mol, Belgium, 6-9 May 2007, p. 181

J-PARC

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