WEP001  ポスター②  10月19日 会議室P 13:00-15:00
Equipartitioned ビーム方式に基づく ADS RFQの設計とビームダイナミクスの研究
Design and beam dynamics studies of an ADS RFQ based on an equipartitioned beam scheme
○イーレンドン ブルース,近藤 恭弘,田村 潤,中野 敬太,前川 藤夫,明午 伸一郎(JAEA),ーー ーー(Institut Angewandte Physik, Frankfurt, Germany)
○Bruce Yee-rendon, Yasuhiro Kondo, Jun Tamura, Keita Nakano, Fujio Maekawa, Shin-inchiro Meigo (JAEA), Robert. A Jameson (Institut Angewandte Physik, Frankfurt, Germany)
The Japan Atomic Energy Agency (JAEA) is designing a 30-MW proton linear accelerator (linac) for the accelerator-driven subcritical system (ADS) project. The radio frequency quadrupole (RFQ) is an essential component for the performance of high-intensity linac, especially in ADS projects where stringent reliability is demanded. The JAEA-ADS RFQ will capture a 20 mA proton beam and accelerate from the energy of 35 keV to 2.5 MeV, where the space-charge effects are severe. The JAEA-ADS RFQ's design employs the equipartitioning (EP) beam scheme to control the emittance growth and compactness. As a result, the beam halo formation was minimized and allowed the optimization of the superconducting linac downstream part. A remarkable feature of this RFQ is the low Kilpatrick factor of 1.2 adopted to achieve high stability by reducing the probability of surface sparking on the vane. This work presents and discusses the results of this RFQ design.