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Preliminary design study and problem definition for intense CW superconducting deuteron ion linac for fusion material study

Yoshio Tanabe, Nobukazu Kakutani, Tomoko Ota, Akiko Yamaguchi, Yasutsugu Morii1997年Fusion Engineering and DesignIF 1.7出版社

AbstractThe advantages of superconducting (SC) cavity have been verified for many electron accelerators and the application of SC cavity to high intensity CW ion linacs is currently being considered. These linacs have been required for neutron irradiation tests of materials, transmutation of nuclear waste and so on. An SC linac consisting of SC cavities, SC quadrupole magnets and cryostats, was preliminarily designed to investigate the feasibility of applying to deuteron machine. Beam dynamics analysis was also carried out by using a modified PARMILA code in order to confirm no beam loss. Since radiation damage of superconductors is especially severe for such a machine, data relating to the damage were surveyed and discussed. Moreover, other major facilities such as cryogenic system, radio frequency (rf) amplifier and rf control system were considered. Many problems to be solved were defined but no critical issues were found. In consequence, it became clear that SC linac is very attractive and competitive with a room-temperature linac.

日本語訳

超伝導(SC)空洞の利点は多くの電子加速器で実証されており、現在、高強度CWイオンリニアックへのSC空洞の適用が検討されている。これらのリニアックは、中性子照射試験、核廃棄物の核変換などのために要求されてきた。SC空洞、SC四重極磁石、および極低温容器からなるSCリニアックは、重陽子機への適用の実現可能性を調査するために予備設計が行われた。ビーム力学解析も、ビーム損失がないことを確認するために、修正版PARMILAコードを用いて実施された。超伝導体の放射線損傷はこのような機械にとって特に深刻であるため、損傷に関するデータが調査され、議論された。さらに、極低温システム、高周波(rf)増幅器、およびrf制御システムなどの他の主要設備も検討された。解決すべき多くの問題が定義されたが、重大な問題は見つからなかった。その結果、SCリニアックが常温リニアックと比較して非常に魅力的で競争力があることが明らかになった。

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