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Uesugi, T.

Paper Title Page
MOPEA039 Beam Study for FFAG Accelerator at KURRI 157
 
  • Y. Kuriyama, Y. Ishi, J.-B. Lagrange, Y. Mori, T. Planche, M. Takashima, T. Uesugi, E. Yamakawa
    KURRI, Osaka
  • H. Imazu, K. Okabe, I. Sakai, Y. Takahoko
    University of Fukui, Faculty of Engineering, Fukui
  
 

In Kyoto Uni­ver­si­ty Re­search Re­ac­tor In­sti­tute (KURRI), The FFAG ac­cel­er­a­tor com­plex for ac­cel­er­a­tor driv­en sub-crit­i­cal re­ac­tor (ADSR) pro­ject has been al­ready con­struct­ed and world first ADSR ex­per­i­ment has been done at May, 2009. In the main ring, pro­ton beams of 11.5 MeV are in­ject­ed and ac­cel­er­at­ed up to 100 MeV. Dur­ing the ac­cel­er­a­tion, two dif­fer­ent types of beam loss have been ob­served. To in­ves­ti­gate these beam loss, be­ta­tron and syn­chrotron mo­tion have been mea­sured ex­per­i­men­tal­ly. The de­tails of mea­sure­ments will be de­scribed in this pre­sen­ta­tion.

  
MOPEB064 Study of FFAG-ERIT Neutron Source 418
 
  • K. Okabe
    University of Fukui, Faculty of Engineering, Fukui
  • Y. Ishi, Y. Mori, T. Uesugi
    KURRI, Osaka
  
 

As for BNCT (boron neu­tron cap­ture ther­a­py) med­i­cal ap­pli­ca­tions, an ac­cel­er­a­tor-based in­tense ther­mal or ep­ither­mal neu­tron source has been strong­ly re­quest­ed re­cent­ly. A scal­ing type of FFAG ac­cel­er­a­tor with ERIT (en­er­gy/emit­tance re­cov­ery in­ter­nal tar­get) scheme has been de­vel­oped for this pur­pose. In this scheme, the beam emit­tance degra­da­tion caused by the neu­tron pro­duc­tion tar­get are cured by ion­iza­tion cool­ing method. In this pre­sen­ta­tion, re­cent beam study of ion­iza­tion cool­ing and neu­tron pro­duc­tion will be de­scribed.

  
TUOCRA03 Present Status and Future of FFAGs at KURRI and the First ADSR Experiment 1327
 
  • Y. Ishi, M. Inoue, Y. Kuriyama, J.-B. Lagrange, Y. Mori, T. Planche, M. Takashima, T. Uesugi, E. Yamakawa
    KURRI, Osaka
  • H. Imazu, K. Okabe, I. Sakai, Y. Takahoko
    University of Fukui, Faculty of Engineering, Fukui
  
 

World's first ADSR ex­per­i­ments which use spal­la­tion neu­trons pro­duced by high en­er­gy pro­ton beams ac­cel­er­at­ed by the FFAG syn­chrotron has start­ed since March 2009 at KURRI. In these ex­per­i­ments, the prompt and de­layed neu­trons which in­di­cate neu­tron mul­ti­pli­ca­tion caused by ex­ter­nal source have been de­tect­ed. The ac­cel­er­a­tor com­plex for ADSR study in KURRI con­sists of three FFAG pro­ton rings. It de­liv­ers the 100MeV pro­ton beam to the W tar­get lo­cat­ed in front of the sub­crit­i­cal nu­cle­ar fuel sys­tem con­struct­ed in the re­ac­tor core of KUCA (Kyoto Uni­ver­si­ty Crit­i­cal As­sem­bly) at 30Hz rep­e­ti­tion rate. Cur­rent sta­tus of the fa­cil­i­ty and the fu­ture plans of ADSR sys­tem and high in­ten­si­ty pulsed spal­la­tion neu­tron source which em­ploy a newly added 700MeV FFAG syn­chrotron to the ex­ist­ing FFAG com­plex in KURRI will be pre­sent­ed.

  

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Slides

 
THPD092 Applications of Advanced scaling FFAG Accelerator 4503
 
  • J.-B. Lagrange, Y. Ishi, Y. Kuriyama, Y. Mori, K. Okabe, T. Planche, T. Uesugi, E. Yamakawa
    KURRI, Osaka
  
 

Until today, scal­ing FFAG ac­cel­er­a­tor were only de­signed in a ring shape. But a new cri­te­ria of the mag­net­ic field con­fig­u­ra­tion sat­is­fy­ing the scal­ing con­di­tion even for straight FFAG beam line has been re­cent­ly found. More­over, com­bin­ing dif­fer­ent types of cells can be used to imag­ine new lat­tices. Var­i­ous ap­pli­ca­tions using these re­cent de­vel­op­ments are here ex­am­ined: in­prove­ments of the PRISM pro­ject and the ERIT pro­ject, and a ze­ro-chro­mat­ic car­bon gantry con­cept are pre­sent­ed.

  
THPD093 New Approaches to Muon Acceleration with Zero-chromatic FFAGS 4506
 
  • T. Planche, Y. Ishi, Y. Kuriyama, J.-B. Lagrange, Y. Mori, K. Okabe, T. Uesugi, E. Yamakawa
    KURRI, Osaka
  
 

The ac­cel­er­a­tion of in­tense muon beams up to 25 GeV is the chal­lenge of the in­ter­na­tion­al de­sign work for a fu­ture neu­tri­no fac­to­ry. The pre­sent base­line sce­nario for muon ac­cel­er­a­tion is based on linacs, re­cir­cu­lat­ing lin­ear ac­cel­er­a­tors (RLAs) and non-scal­ing fixed field al­ter­nat­ing gra­di­ent (FFAG) rings. How­ev­er RLAs are one of the most cost driv­ing part. Two new ap­proach­es to use ze­ro-chro­mat­ic FFAG in­stead of RLA have been pro­posed. De­tailed lat­tices pa­ram­e­ters and 6D track­ing re­sults are pre­sent­ed.

  
THPEB009 Development of H- Injection of Proton-FFAG at KURRI 3897
 
  • K. Okabe, R. Nakano, Y. Niwa, I. Sakai
    University of Fukui, Faculty of Engineering, Fukui
  • Y. Arakida
    KEK, Ibaraki
  • M. Inoue, Y. Ishi, Y. Kuriyama, J.-B. Lagrange, Y. Mori, T. Planche, T. Uesugi, E. Yamakawa
    KURRI, Osaka
  
 

In Kyoto Uni­ver­si­ty Re­search Re­ac­tor In­sti­tute (KURRI), the FFAG ac­cel­er­a­tor for ac­cel­er­a­tor driv­en sub-crit­i­cal re­ac­tor (ADSR) sys­tem has been con­struct­ed and world's first ADSR ex­per­i­ments have start­ed in March 2009. In order to up­grade beam in­ten­si­ty, mul­ti­turn charge ex­change in­jec­tion sys­tem for scal­ing FFAG ac­cel­er­a­tor is being stud­ied. The 11MeV H- beam is in­ject­ed from linac and is ac­cel­er­at­ed up to 100MeV in FFAG main ring. In this pre­sen­ta­tion, the de­tail of in­jec­tion sys­tem is de­scribed and fea­si­bil­i­ty of such a low en­er­gy H- in­jec­tion sys­tem is dis­cussed.