KURRI and FFAGOverview
Yasutoshi KURIYAMA (RRI, Kyoto Univ.)

京都大学 原子炉実験所
Kyoto University Research Reactor InstituteContents•KURRI

•

KART•

•

•

KYOTO
KOBE

ADS Experiment

KURRI-FFAG Accelerator
ComplexOSAKA

KIX
we are here!

Future Plan
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京都大学 原子炉実験所
Kyoto University Research Reactor InstituteKyoto University
Research Reactor Institute•

In 1963, RRI was established•

Two Reactors :••

•

KUR
•

In 1964, Reached the critical stage•

The nominal maximum power 5000 KW•

As a Neutron Generator

KURRI

KUCA
•

In 1974, Reached the critical stage•

The nominal maximum power 100 W•

For reactor physics & educational
purposeTwo Main Projects :•ADS“Accelerator Driven System”•BNCT “Boron Neutron Capture Therapy”
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京都大学 原子炉実験所
Kyoto University Research Reactor InstituteKUR
Kyoto University Research Reactor•As a neutron source for research•

5 MW (max.), 3x1013 neutorn / cm2 s

KURRI Tour!!
4京都大学 原子炉実験所
Kyoto University Research Reactor Institute

KUCA
Kyoto University Critical Assembly•

Number of reactor core is 3••

One has liquid (water) moderator, other have solidmoderator

D-T accelerator in the reactor room•

14 MeV Neutron Source for ADS studyFrom
Masako IWASAKI

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京都大学 原子炉実験所
Kyoto University Research Reactor Institute

原子炉中性子源

BNCT

重水設備

From
Hiroki TANAKA

Boron Neutron Capture Therapy•Cancer Therapy using
Neutron
中性子捕捉療法•

Ｂｏｒｏｎ Ｎｅｕｔｒｏｎ Ｃａｐｕｔｕｒｅ Ｔｈｅｒａｐｙ
Since 1974

•Neutron Source : KUR (or 30 MeV Cyclotron)< Under Clinical Trial >From
Hiroki TANAKA

6

京都大学 原子炉実験所
Kyoto University Research Reactor InstituteKART
Kumatori Accelerator-driven Reactor Test facility•For ADS experiment,
started in 2002•

FFAG Complex had beenbuild for the KART project•KUCA has been used as a
subcritical reactor

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京都大学 原子炉実験所
Kyoto University Research Reactor InstituteADS
Accelerator Driven Systemcharged particle
target for generating
neutronaccelerator
subcritical reactor

From
Yoshihiro ISHI•

Subcritical Reactor + Neutron Source (Proton Driver)•Reduce Nuclear Waste by nuclear transmutation
8

京都大学 原子炉実験所
Kyoto University Research Reactor InstituteADS at KURRI•

Sub-critical Reactor : KUCA ( ~ 1 W )•Proton Driver : FFAG Complex (100 MeV, 1 nA)
9京都大学 原子炉実験所
Kyoto University Research Reactor InstituteADS at KURRI

FromYoshihiro ISHI•

Sub-critical Reactor : KUCA ( ~ 1 W )•Proton Driver : FFAG Complex (100 MeV, 1 nA)

KURRI Tour!!
10京都大学 原子炉実験所
Kyoto University Research Reactor InstituteFirst ADS Experiment
March 4, 2009

•World First ADS Experiment with Spallation Neutrons•The First FFAG used for Application
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京都大学 原子炉実験所
Kyoto University Research Reactor InstituteKURRI-FFAG Complex
1 5 0 M E V F FA G M A I N R I N G

H- IONSOURCE

30 keV

11MEV LINAC

Charge Exchange Foil

100 MeV

11 MeVH-

H+KUCA-BT

150 MeV

KUCA
TargetIrradiation-BT•

Injector : 11 MeV H- Linac••1μA ave., ~ 200 Hz Repetition

MR : 150 MeV FFAG•10 nA, ~ 60 Hz Repetition
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京都大学 原子炉実験所
Kyoto University Research Reactor Institute150 MeV FFAG magnet, the view from the center of the ring.

FFAG
FromYoshiharu MORI

Fixed Field Alternating Gradient accelerator
2010年10月27日水曜日

Strong Focus, Zero Chromaticity (Const. Tune), Fixed Field,School,London,June 24-28, 20002

Frequency Modulation (not isochronous, synchrotron oscillation)

Cyclotron

Synchrotron

Cyclotron*isochronous

Synchrotron*const.
closed orbit(varyingfield)*const.mag.
closedorbit*isochronous(varying mag. field)
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FFAGB
FFAG=
*const. closed orbit*varying
closedorbit B0(const.
mag.
field)(const. mag. field)

rr0⇥k

京都大学 原子炉実験所

Kyoto University Research Reactor InstituteFFAG•In 1950, Electron FFAG Constructed•In 2000, Proton FFAG Constructed at KEK• Development of Broadband Magnetic Core for RF Cavity (MA Core)
中はこうなって• Improvement of Computing Power

中はこうなっています。

• Precise Calculation of 3D magnetic ﬁeld map (Opera-3D)

ole
Pscu

磁石単体の写真：外側の軌道ほど、強い磁場を受けるしくみになっています。
磁石単体の写真：外側の軌道ほど、強い磁場を受けるしくみになっています。

Po
lecusforr0De

B=B0⇥ks

ビーム
BeamFocuビーム

Beam Trajectory

PoleoDef

います。

FromTomonori UESUGI

両サイドにある、ビームを外向きに曲げる磁石がおかれ京都大学 原子炉実験所

14ています。これが強い収束値からを生む秘訣です。
Kyoto University Research Reactor Institute
両サイドにある、ビームを外向きに曲げる磁石がおかれ• FFAG-ring• PRISM-FFAG Magnet x 6、RF x 1

Another FFAG Activities• Beam : α-particles from radioactive isotopes• 241Am 5.48MeV(200MeV/c)

KYUSYU UNIVER→ degrade to 100MeV/c

CYCLOTRON’10, Sept. 6-10, 2010, Lanzhou

small emittance by collimators
NHV• CO.
T.Baba, M.Yuasa• pulsingbysterilizationelectrostatickickers
Prototype of FFAG Electron
Accelerator:etc.
EnergyInj. / Ext.

• Detector : Solid state detector
50 / 500keV

Orbit radius Inj. / Ext.

0.19 / 0.44m

Acceleration frequency

10kHz

Beam Current• energy

Outer diameter

1.1m

Construction of new accelerator center
Main accelerator : FFAG Synchrotron• timing

20%

6-cell PRISM-FFAGin the M-exp. hall of RCNP, Osaka University

Gun

100mA peak

Duty

CCore for induction*The test machine that Mori’s groupdeveloped is under re-installation.

Electron Beam

External FC

2010年10月27日水曜日

2010年10月27日水曜日

150 MeV FFAG in the Kyushu Univ.

EMMA at STFC in the UK

Newly constill unde
Further deve

11 m

2010年10月27日水曜日

15A mavariousChallenges

京都大学 原子炉実験所
Kyoto University Research Reactor InstituteFuture Plan of KURRIFFAG Complex••

Figure 5: The horizontal phase space structure. Particle
tracking has been performed through 10 000 turns using 4thorder Runge-Kutta solver. A large stable region is guaranteed compared with the beam size estimated as a few cm.

Figure 6: A scheme of the beam extraction fro
400 MeV ring. The kicker magnet kicks the be
30 mrad with the magnetic field of 2 kG to maketurn separation at the septum magnet. The phase abetween the kicker and septum magnet is about 90◦of them should be moved by remote controlled mech
inside the vacuum chamber in order to extract the bediﬀerent energies.

After 150 MeV FFAG MR, build new 400 MeV FFAG ring
Table 2: The main parameters of the beam extraction elements

Stage of design study
kickerseptumMagnetic field
LengthKick angle

0.2 T
0.5 m
30 mrad

0.7 T
1.0 m
220 mradSUMMARY
A new 400 MeV proton FFAG ring has been designed
outside the existing main ring in the FFAG accelerator complex at KURRI. The purpose of the new ring is to deliver
the diﬀerent energy beams from 200 to 400 MeV to a subcritical fuel system for the basic study of ADS. In order tosatisfy the requirements of reactor physicists, the energy ofthe beam should be variable. It has been shown that thevariable energy extraction scheme can be realized using themovable kicker and septum magnet and the merging magnets.
16FromYoshihiro ISHI

Figure 7: Footprint of the extracted beams. Red line
the main magnets of the 400 MeV ring. The blue andMERITMeson Production Energy Recovery Internal Target•

FFAG ring with Internal Target••HPurpose : Reduce nuclear waste
through nuclear transmutation

In FY2016 to FY2019, Demonstrateserpentine acceleration
Now modiﬁcations of FFAG ring(ERIT) is undergoing

荷電変換膜Extension Foil
Chargee

高E軌道•

Goal : Produce Negative Muon

低E軌道

•

加速空洞
CavityDiameter 〜10 mp

標的（くさび型）
Secondparticle
Production Target

⇡!µ

From
Tomonori UESUGI

17京都大学 原子炉実験所
Kyoto University Research Reactor InstituteFuture•

Two Reactors KUR&KUCA will be resumed in thissummer.

•Next ADS experiment is planned this winter.
••Last ADS experiment had been done in Jan. 2014.

Accelerator Group is trying to design a new 400 MeV
FFAG and demonstrate serpentine acceleration in theFFAG with internal target.
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