• 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.

• 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.

• S. Maebara
  JAEA, Ibaraki-ken

In the de­sign of pro­to­type RFQ linac for the IFMIF/EVEDA Pro­ject, a cou­pled cav­i­ty type of RFQ, which has a lon­gi­tu­di­nal length of 9.78m, was pro­posed to ac­cel­er­ate deuteron beam up to 5MeV. The op­er­a­tion fre­quen­cy of 175MHz was se­lect­ed to ac­cel­er­ate a large cur­rent of 125mA in CW mode. The driv­ing RF power of 1.28 MW by 8 RF input cou­plers has to be in­ject­ed to the RFQ cav­i­ty. As the RF input cou­pler de­sign, RF loss­es in­clud­ing RF vac­u­um win­dows, based on a 4 1/16 inch and 6 1/8 inch co-ax­i­al waveg­uide as well as RF cou­pling fac­tor of a loop an­ten­na with var­ied in­ser­tion depths using an RFQ model were cal­cu­lat­ed. In this con­fer­ence, these re­sults and ther­mal anal­y­sis re­sults in CW op­er­a­tion mode will be pre­sent­ed in de­tails.