• H. Sakaki, P.R. Bolton, T. Hori, K. Kondo, M. Nishiuchi, F. Saito, H. Takahashi, M. Ueno, A. Yogo
  JAEA, Ibaraki-ken
• H. Iwase
  KEK, Ibaraki
• K. Niita
  RIST, Ibaraki

The con­cept of a com­pact ion par­ti­cle ac­cel­er­a­tor has be­come at­trac­tive in view of re­cent progress in laser-driv­en hadrons ac­cel­er­a­tion. The Photo Med­i­cal Re­search Cen­tre (PMRC) of JAEA was es­tab­lished to ad­dress the chal­lenge of laser-driv­en ion ac­cel­er­a­tor de­vel­op­ment for hadrons ther­a­peu­tic. In the de­vel­op­ment of the in­stru­ment, it is nec­es­sary to do the bench-mark of the amount of the dif­fer­ent types of ra­di­a­tion by the sim­u­la­tion code for shield­ing. The Monte Carlo Par­ti­cle and Heavy Ion Trans­port code (PHITS) was used for bench-mark the dose on laser-shot ra­di­a­tions of short du­ra­tion. The code pre­dicts rea­son­ably well the ob­served total dose as mea­sured with a glass dosime­ter in the laser-driv­en ra­di­a­tions.

• H. Takahashi, T. Kojima, S. Maebara, T. Narita, H. Sakaki, K. Tsutsumi
  JAEA, Rokkasho, Kamikita, Aomori

Con­trol Sys­tem for IFMIF/EVEDA ac­cel­er­a­tor pro­to­type con­sists of the six sub­sys­tems; Cen­tral Con­trol Sys­tem (CCS), Local Area Net­work (LAN), Per­son­nel Pro­tec­tion Sys­tem (PPS), Ma­chine Pro­tec­tion Sys­tem (MPS), Tim­ing Sys­tem (TS) and Local Con­trol Sys­tem (LCS). The sub­sys­tems have been de­signed and their test bench­es been fab­ri­cat­ed at JAEA. The IFMIF/EVEDA ac­cel­er­a­tor pro­to­type pro­vides a deuteron beam with the power more than 1 MW, which is as same as that in cases of J-PARC and SNS. In the con­trol sys­tem, MPS and TS with high per­for­mance and pre­ci­sion are strong­ly re­quired to avoid the ra­dio-ac­ti­va­tion of the ac­cel­er­a­tor com­po­nents. The pro­to­types of the MPS and TS are test­ing in con­junc­tion with the in­jec­tor test start­ing at CEA/Saclay from au­tumn in 2010. These re­sults will feed­back the de­sign and the fab­ri­ca­tion of the con­trol com­po­nents. This paper pre­sents the de­vel­op­ment sta­tus of the TS mod­ules and EPICS drivers for TS and MPS, and the prospects to apply them to the In­jec­tor test.

• A. Mosnier, P.-Y. Beauvais, R. Gobin, J.-F. Gournay, P. Joyer, J. Marroncle, P.A.P. Nghiem, F. Orsini
  CEA, Gif-sur-Yvette
• B. Brañas, A. Ibarra, P. Méndez, I. Podadera Aliseda, J. Sanz, F. Toral
  CIEMAT, Madrid
• M. Comunian, A. Facco, A. Palmieri, A. Pepato, A. Pisent
  INFN/LNL, Legnaro (PD)
• P. Garin, Ch. Vermare
  IFMIF/EVEDA, Rokkasho
• R. Heidinger
  Fusion for Energy, Garching
• H. Kimura, T. Kojima, T. Kubo, S. Maebara, S. O'hira, Y. Okumura, K. Shinto, H. Takahashi, K. Yonemoto
  JAEA, Aomori

The ob­jec­tives of the IFMIF/EVEDA pro­ject are to pro­duce the de­tailed de­sign of the en­tire IFMIF fa­cil­i­ty, as well as to build and test a num­ber of pro­to­types, in­clud­ing a high-in­ten­si­ty CW deuteron ac­cel­er­a­tor (125 mA @ 9 MeV). Most of the ac­cel­er­a­tor com­po­nents (In­jec­tor, RFQ, Su­per­con­duct­ing RF-Linac, Trans­port Line and Beam Dump, RF Sys­tems, Local con­trol sys­tems, beam in­stru­men­ta­tion) are de­signed and pro­vid­ed by Eu­ro­pean in­sti­tu­tions (CEA/Saclay, CIEMAT, INFN/LNL, SCK-CEN), while the RFQ cou­plers, the su­per­vi­sion of the con­trol sys­tem and the build­ing in­clud­ing util­i­ties con­struct­ed at Rokkasho BA site are pro­vid­ed by JAEA. The co­or­di­na­tion be­tween Eu­rope and Japan is en­sured by an in­ter­na­tion­al pro­ject team, lo­cat­ed in Rokkasho, where the ac­cel­er­a­tor will be in­stalled and com­mis­sioned. The de­sign and R&D ac­tiv­i­ties are pre­sent­ed, as well as the sched­ule of the pro­to­type ac­cel­er­a­tor.

• Ch. Vermare, P. Garin, H. Shidara
  IFMIF/EVEDA, Rokkasho
• P.-Y. Beauvais, A. Mosnier
  CEA, Gif-sur-Yvette
• A. Facco, A. Pisent
  INFN/LNL, Legnaro (PD)
• R. Heidinger
  Fusion for Energy, Garching
• A. Ibarra
  CIEMAT, Madrid
• H. Kimura, S. Maebara, S. O'hira, Y. Okumura, K. Shinto, H. Takahashi
  JAEA, Ibaraki-ken

In the frame of the IFMIF/EVEDA pro­ject, a high-in­ten­si­ty (125 mA) CW deuteron ac­cel­er­a­tor will be in­stalled and com­mis­sioned at the Rokkasho's Broad­er Ap­proach (BA) site. The main ob­jec­tive of this 9 MeV pro­to­type is to pro­vide in­for­ma­tion on the fea­si­bil­i­ty of the de­sign, the man­u­fac­tur­ing and the op­er­a­tion of the two linacs (up to 40 MeV) fore­seen for IFMIF*. Based on the re­quire­ments for each Sys­tem (Ac­cel­er­a­tors, Lithi­um tar­get and Tests Fa­cil­i­ty) which are de­duced from the IFMIF fu­sion ma­te­ri­al ir­ra­di­a­tion re­quire­ments, given by the users, the ob­jec­tives of this ac­cel­er­a­tor pro­to­type are de­fined and pre­sent­ed here. Also, be­cause of the dis­tribut­ed na­ture of the de­sign work and the pro­cure­ment of the ac­cel­er­a­tor, or­ga­ni­za­tion of the in­stal­la­tion and com­mis­sion­ing phase is es­sen­tial. The in­stal­la­tion and com­mis­sion­ing schemes, the or­ga­ni­za­tion pro­posed and the over­all plans are pre­sent­ed.

*IFMIF International Team, IFMIF Comprehensive Design Report (CDR) 2003.

• A. Toyoda, A. Agari, E. Hirose, M. Ieiri, Y. Katoh, A. Kiyomichi, M. Minakawa, T.M. Mitsuhashi, R. Muto, M. Naruki, Y. Sato, S. Sawada, Y. Suzuki, H. Takahashi, M. Takasaki, K.H. Tanaka, H. Watanabe, Y. Yamanoi
  KEK, Tsukuba
• H. Noumi
  RCNP, Osaka

Op­ti­cal beam mea­sure­ment such as OTR(Op­ti­cal Tran­si­tion Ra­di­a­tion), ODR(Op­ti­cal Diffrac­tion Ra­di­a­tion), gas Cerenkov, and so on is a pow­er­ful tool to ob­serve a two-di­men­sion­al in­for­ma­tion of high in­ten­si­ty beam pro­file, so that this method is wide­ly used at var­i­ous elec­tron and hadron ac­cel­er­a­tors. How­ev­er, high ra­di­a­tion field to dam­age an op­ti­cal sys­tem grad­u­al­ly be­comes a major issue with in­creas­ing the beam in­ten­si­ty to ex­plore new physics. Our pre­sent ef­fort is de­vot­ed to de­vel­op a high ef­fi­cient op­ti­cal sys­tem to re­sist such high ra­di­a­tion field. We newly de­signed an op­ti­cal sys­tem com­posed of two spher­i­cal mir­rors which do not have any lens­es vul­ner­a­ble to ra­di­a­tion. De­tailed op­tics de­sign and a re­sult of op­ti­cal per­for­mance test will be pre­sent­ed. Also we will re­port a re­sult of a beam test ex­per­i­ment of this op­tics sys­tem com­bined with an OTR screen per­formed at high in­ten­si­ty pro­ton ex­trac­tion beam­line of the J-PARC.

• M. Ieiri, A. Agari, E. Hirose, Y. Katoh, M. Minakawa, R. Muto, M. Naruki, Y. Sato, S. Sawada, Y. Suzuki, H. Takahashi, T. Takahashi, M. Takasaki, K.H. Tanaka, A. Toyoda, H. Watanabe, Y. Yamanoi
  KEK, Tsukuba
• H. Noumi
  RCNP, Osaka

In the hadron ex­per­i­men­tal hall at the 50-GeV Pro­ton Syn­chrotron (PS) of J-PARC, the sec­ondary beam line K1.8 with dou­ble stage sep­a­ra­tor is ex­pect­ed to pro­vide 1-2 GeV/c kaon beams with less con­tam­i­na­tion of pions main­ly for hadron and nu­cle­ar physics ex­per­i­ments with strangeness. An elec­tro­stat­ic (ES) sep­a­ra­tor is one of key el­e­ments of this sec­ondary beam line. The ES sep­a­ra­tor will gen­er­ate a 75kV/cm elec­tro­stat­ic field be­tween par­al­lel elec­trodes of 10cm gap and 6m in length along the beam di­rec­tion. It is de­signed so as to be ra­di­a­tion-proof and to lower spark rate at the high in­ten­si­ty pro­ton ac­cel­er­a­tor fa­cil­i­ty. The K1.8 line has two 6m ES sep­a­ra­tors with the in­ter­me­di­ate focal point up­stream of sep­a­ra­tors to re­duce the pion back­grounds from the pro­duc­tion tar­get. The K-/π- ratio of the line is ex­pect­ed to have a larg­er value than 1 at the ex­per­i­men­tal tar­get. Beam com­mis­sion­ing of the K1.8 has just start­ed. We will re­port sep­a­ra­tor per­for­mance, op­tics de­sign of the K1.8 beam line and the first re­sult of the beam com­mis­sion­ing.