2014•Institutional Repositories DataBase (IRDB)Open access
Upgrade Status of Injector LINAC for SuperKEKB
Takako Miura, M. Akemoto, Dai Arakawa, Y. Arakida, Atsushi Enomoto, Shigeki Fukuda, Y. Funakoshi, K. Furukawa, T. Higo, Hiroyuki Honma, Ryo Ichimiya, N. Iida, Mitsuo Ikeda, E. Kadokura, Hiroshi Kaji, K. Kakihara, T. Kamitani, Hiroaki Katagiri, Kurashina, Miho, Shuji Matsumoto, T. Matsumoto, Hideki Matsushita, Shinichiro Michizono, K. Mikawa, F. Miyahara, Hiromitsu Nakajima, Katsumi Nakao, Takuya Natsui, Yujiro Ogawa, Y. Ohnishi, A. Ohsawa, Feng Qiu, Daisuke Satoh, Masanori Satoh, Shidara, Tetsuo, A. Shirakawa, Hiroshi Sugimoto, T. Suwada, T. Takenaka, Madoka Tanaka, Y. Yano, K. Yokoyama, Mitsuhiro Yoshida, L. Zang, Xiangyu Zhou
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Abstract
The SuperKEKB collider is under construction to achieve 40-times higher luminosity than that of previous KEKB collider. The injector LINAC should provide high-intensity and low-emittance beams of 7-GeV electron and 4-GeV positron for SuperKEKB based on a nano-beam scheme. A photocathode RF-gun for low emittance electron beam has been already installed and the commissioning has started. The construction of positron capture section using a flux-concentrator and the dumping ring for low emittance positron beam is in progress. The simultaneous top-up injections to four storage-rings including photon factories is also required. In the upstream of dumping ring, the compatible optics between positron and electron has been designed. In the downstream of dumping ring, RF phase, focusing, and steering magnets will be switched by pulse to pulse against each beam-mode for optimising beam-transportation. This paper describes recent upgrade status toward the SuperKEKB.