Status report of the design of superconducting proton linac for the JAEA-ADS

JAEAの加速器駆動型核変換システムにおける超伝導陽子LINACの設計現状報告

Yee-Rendon, B. ; 長谷川 和男; 近藤 恭弘   ; 前川 藤夫  ; 明午 伸一郎   ; 田村 潤  

Yee-Rendon, B.; Hasegawa, Kazuo; Kondo, Yasuhiro; Maekawa, Fujio; Meigo, Shinichiro; Tamura, Jun

The Japan Atomic Energy Agency (JAEA) is designing a CW superconducting proton linac to work as an accelerator-driven subcritical system (ADS) for the transmutation of nuclear waste. The superconducting linac will operate with a beam current of 20 mA and final energy of 1.5 GeV to achieve a beam power of 30 MW. The beam acceleration from 2 MeV to 1.5 GeV will be conducted using different types of superconducting cavities: Half-Wave Resonator (HWR), Single-Spokes (SS) and Elliptical multicell cavities. Moreover, the number of beam trips and its duration are essential constraints to achieve successful operation of the ADS, therefore a carefully beam optics design is required to avoid and control as much as possible the emittance growth, increase of the beam halo, etc. The results of cavity designs and the beam optics for the superconducting region are discussed.