4 Month Summary
after the Earthquake1

In front of Linac

Immediately
after theEarthquake
Many pipes forcooling water
were damaged.

PresentUrgent recovery of coolingwater system is required.

2Linac Tunnel as of March 24

On March 17 the water level was only 1 cm, but it increased to 10 cm(100 tons) on March 24. The water was pumped out with an in-houseelectric generator, and the problems were resolved afterwards.

3Floor sagged ~4 cm in the middle. However, otherplaces, except beam monitors, were normal.
(Beam was aligned step by step through repetitionof dropping the beam power and being bent bymagnets. A perfect alignment is planned in thenext year.)4Current Status of Linac
Big Issues
・Cooling water (Being restored inSeptember)・Electricity (Low voltage is OK, and highvoltage will be OK when wiring is repaired.)・Crane (Will be operating shortly)
・Alignment (Operation with straight line will
be in the next year.)

Close inspection of substruction ofbuilding with impact elastic wave method
and taking cores~80 cm void was found. The repair plan isdiscussed. Floor leveling is also investigated.

Inspection of crane in the tunnel
Confirming it can be operated witha weight limit.

Repair of water leaks in the tunnel
The leakages were stopped by injection ofa foaming urethane material.
5Road Condition around 3 GeV
The road was repaved by the endof June. It provides an access tothe cooling tower beyond this point.
Repair of the electric power supply
facility near here has been also
kicked-off.

Immediately
after
the Earthquake

Wavy road!
The side of the road got sagged.
The center part remained because
the RCS accelerator tunnel for thebeam-line was present underneath.

End of June6

3 GeV Electric Power Supply, Condenser(Capacitor) Bank, Cooling Tower, etc
Electric Power

Immediatelyafter theEarthquake

Condenser Bank

Immediatelyafter theEarthquake

Leaned to the left.
Around the building entrance,
approximately 100 cables had beenburied, and all of them were distorted.

A condenser (capacitor) bank
was tilted. Cables weredistorted due to its weight.
7

Repair of Electric Power Supplies

8Repair of Cooling Tower & Removal of Pipes

9

Repair ofCondenser (Capacitor)
Bank103 GeV Main Ring
Immediately
after theEarthquake

No obvious damages were observed.
(Photo taken on March 29)

11

50 GeV Main Ring

Stopping
water leakage

Immediately
after theEarthquake

No damages were observed through aninspection from the outside alone.
(Photo taken on March 17)12Current Status of MR (50 GeV)
※ Recovery has been progressing smoothly.
Repairing the leakages in the tunnel is almost completed.
Conducting test of a power supply for a main electromagnet• No specific problems in electric current and temperature. No strange noise or smell wasdetected, either.
• Confirming the soundness of submerged magnets.

No damages were found in the radio frequency systems.
Preliminary Results of Circumference Measurement by Laser Tracker
Displacement of electromagnet

Ring Shape

Amplified x2000• It appeared there was a large misalignment in both horizontal and vertical directions.
• ~20 electromagnet mounts shifted more than a limit of simple adjustment.
•・ All magnets will be realigned by three teams from August to October.
13

Material and Life
Science Experimental
Facility (MLF) Area

Immediately
after theEarthquake

Road at the west side of the MLF
building fell in ~1.5 m.

Present14

Shielding Walls for
Neutron & Target

Bellow was stretched.
Need replacement

Mercury Target

Displacement of shielding walls in MLF
1st Hall: BL04 Area (left)
Bellow of the target shifted ~30 cm.
nd
2 Hall: BL20 Area (right top)
Replacement is planned.
15

Reassembling of the sealing device is inprogress in the MLF. Fortunately theinside laboratory does not require repair.
16

Neutron Instruments at Materials and Life Science Facility
In operation: 10,Beam commissioning: 2, Under construction: 6SuperHRPD (KEK)

UNDER CONSTRUCTION

ANNRI (Tokyo Tech. U., JAEA, Hokkaido U.)

PLANET (U. of Tokyo, JAEA)SPICA (KEK)NOBORU (JAEA)OPERATIONOPERATIONUNDER CONSTRUCTION

NOP (KEK)COMMISIONOPERATION
UNDER CONSTRUCTION

DNA (JAEA)OPERATION

HRC (KEK)

iBIX (Ibaraki Pref.)COMMISION

4SEASONS（JAEA, KEK, Tohoku U.）
OPERATION

AMATERAS (JAEA)NOVA （NEDO, KEK）

OPERATIONOPERATION

UNDER CONSTRUCTION

OPERATION

iMATERIA (Ibaraki Pref.)

OPERATION

TAIKAN (JAEA)OPERATIONVNR (JAEA)
ARISA-II (KEK)

UNDER
CONSTRUCTIONSENJU (JAEA)UNDERCONSTRUCTION

TAKUMI (JAEA)

17

MLF West-side Added Building

Shielding wall wasfalling down.

A 30 cm gap between the MFL and the west-side added building (left)
BL18, BL19 and BL20 were damaged.
Dropped shield (right)
The repair has been already completed.
18

Beam Transfer System of 3 GeV
MLF sagged, being 12 mm lower compared to RCS (3 GeV synchrotron).

Surveying work in
the 3NBT tunnel

Mending cracks ofwalls and floors byinjection of plastics
19Muon and the Other
Investigating a status of the Muon
facility with removing the shieldInspection of the Muon Target

Inspection of Expansion Turbine

Checking up the Super Low
Temperature Hydrogen System,
including Expansion Turbine
20

Neutrino:
Air Conditioning
and Beam Dump
Beam Dump

Air Conditioning

Immediately
after theEarthquake

Immediately
after theEarthquake

21

Guiderail for the Hornand On Site Detector

Remotemaintenanceguide cell for
NeutrinoHornVerydangerous
situation, but
it wasNo significant damages through outside
repairedinspection. About 1 cm deep water at the bottom.
(below).
This problem has been already solved.
22

Current Status of Neutrino※ Recovery has been progressing smoothly.
Building, electric & machine facilities have been almost restored.
Electromagnets and superconducting magnets• There are no serious damages in electromagnets.
Superconducting magnets were energized up to theirrated current and were dumped, confirming not to haveany damages.
• Submerged cables and connecters will be replaced.
• 31 out of 35 magnets will be realigned.

Target Station• Inspection of inside of a He container has begun.
• All three magnet horns shifted a few – 10 mmhorizontally. All bolts to maintain the horizontal level
were broken, but no damages in vertical bolts.
• While continuous current test will be conducted on
all horns, the 1st horn will be replaced.
• The carbon target will be also replaced.

Submerged cables and connecters

Pre-detector•Visual inspection and current test have beenconducted. No problems were found.

Measuring radiation level with
opening a cover of the station 23

Superconducting BeamLine for Neutrino (below)
and the Beam Line for
Hadron (right)
Switchyard Magnets• Need to be aligned.
• To minimize the restoring time,
the beam orbit will be adjustedwith using steering magnets.

Superconducting Beam Line(very healthy)

Beam Line for Hadron

Realignment of switchyard magnets is inprogress.

24

Outside Wall of the Hadron Hall

North
SouthThis wall is for future expansionof the facility, and is the mostserious damage in the Hadronfacility.
25

HadronExperimental Hall

Removed Shield

Examinations of beam-line electromagnetrode,wiring of power-supply, and plumbing of coolingwater are in progress in order to confirm theirsoundness. However, thousands tons of the shield
has to be removed for these tests.

26

Outside of the Hadron Hall

Immediately
after theEarthquake

A sagged access road to an entrance
for trailers was repaired. It allows totransport heavy items.

27

Current Status of Each Facility in J-PARC(4 month after the Earthquake: July 6, 2011)
Linac• Void was found under floor of the building. Cooling water system has not yet been restored. Crane
can be operated with a weight limit.
• Restoring work of instruments, including realignment, is progressing smoothly.

RCS (3 GeV synchrotron)• Restoring work of building, including repaving a road, isprogressing smoothly.
• Results of instrument inspection in the tunnel are satisfying.
However, high electric power test in the future would be challenging.
MR (50 GeV synchrotron)• Electric power supplies & cooling water facility have been almost
restored. Repair of water leakages has been completed.
• All electromagnets need to be aligned in the future.
MLF (Material and life science experimental facility)• Restoring work of building is progressing smoothly.
• Reassembling of the shield is continued.

RCS (3 GeV synchrotron)
Restoring work of a surrounding roadhas been completed.

Neutrino• Restoring work of building has been almost completed.
• Inspection of the target station and replacement of electromagnet horn will be conducted.

Hadron• Restoring work of building has been almost completed.
• Inspection of instruments in the shield and alignment of switchyard electromagnets need to be conducted.
28

J-PARC Recovery Schedule （@2011.5.20）
20112011
4

Infrastructure

52012
2012
678910Emergency Recovery

111212

3

Full Recovery Work

Beam Test
User Operation
StartLinacRCS

Investigation
Investigation

RecoveryAlignment

BeamCommissioning

Test withelectricityRecovery

MLF User Operation

Cooling Water

3GeV synchrotron

MR

Test withelectricity

Investigation

Recovery

Test withelectricity

NU or HD Operation

50GeV synchrotron

MLF

Investigation

Materials&Life
Experimental Facility

HDBL Components
Extended Building

Hadron Experimental
Facility

Investigation

NU

Investigation

Neutrino Experimental
Facility

Shielding recovery

RecoveryRecovery

New Hg Target

Beam
Injection

MLF User Program

Beam
Injection

HD Experiment

Beam
Injection

NU Experiment29

J-PARC Power Expectation [MW]Operational Plan for JFY2012 and JFY2013
Case-2Case-1

New Method

RCS Power
MR Power

Old method

Expectationfor 3 GeV(RCS)Expectationfor MR

Earthquake
Construction of 400 MeV Linac

Ne w Funding for 3 years

New Method
200 kW
NormalSummer

145 kW

Summer
400MeVRFQ,IonS.

EarthquakeStop2008

20092010

2011

2012 Summer 2013 Summer2014+ 400MeV

FY+ RFQ,IonS.

For Case-130

Summary of Damages
No Tsunami Effect– We prepared for up to 8 m Tsunami.
 Main Buildings were almost OK– Many underpins for major buildings
 However, many utility buildings, roads, and addedbuildings had significant damages.
 When to recover ?
– Aiming at recovering by the end of this year
– Expect to have 2 cycle (about 2 month) running thisyear Operation of Next Fiscal Year
– Full 9 cycle (200 day) operations for users31