Presentation Recent Developments and Operational Status of the Compact ERL at KEK

Obina, T.  ,  Adachi, M.  ,  Adachi, S.  ,  Akagi, T.  ,  Akemoto, M.  ,  Arakawa, D.A.  ,  Araki, S.  ,  Asaoka, S.  ,  Egi, M.  ,  Enami, K.  ,  Endo, K.  ,  Fukuda, S.  ,  Furuya, T.  ,  Haga, K.  ,  Hara, K.  ,  Harada, K.  ,  Honda, T.  ,  Honda, Y.  ,  Honma, H.  ,  Honma, T.  ,  Hosoyama, K.  ,  Hozumi, K.  ,  Ishii, A.  ,  Jin, X.J.  ,  Kako, E.  ,  Katagiri, H.  ,  Kato, R.  ,  Ka, H.  ,  Kamiyawata, Y.  ,  Kobayashi, Y.  ,  Kojima, Y.  ,  Kondo, Y.  ,  Konomi, T.  ,  Kosuge, A.  ,  Kume, T.  ,  Matsumoto, T.  ,  Matsumura, H.  ,  Matsushita, H.  ,  Michizono, S.  ,  Miura, T.  ,  Miyajima, T.  ,  Miyauchi, H.  ,  Nagahashi, S.  ,  Nakai, H.  ,  Nakajima, H.  ,  Nakamura, N.  ,  Nakanishi, K.  ,  Nakao, K.  ,  Nigorikawa, K.N.  ,  Nogami, T.  ,  Noguchi, S.  ,  Nozawa, S.  ,  Ozaki, T.  ,  Qiu, F.  ,  Sagehashi, H.  ,  Sakai, H.  ,  Sakanaka, S.  ,  Sasaki, S.  ,  Satoh, K.  ,  Seimiya, Y.  ,  Shidara, T.  ,  Shimada, M.  ,  Shinoe, K.  ,  Shioya, T.  ,  Shishido, T.  ,  Tadano, M.  ,  Tahara, T.  ,  Takahashi, T.  ,  Takai, R.  ,  Takaki, H.  ,  Takenaka, T.  ,  Tanaka, O.  ,  Tanimoto, Y.  ,  Terunuma, N.  ,  Tobiyama, M.  ,  Tsuchiya, K.  ,  Uchiyama, T.  ,  Ueda, A.  ,  Umemori, K.  ,  Urakawa, J.  ,  Watanabe, K.  ,  Yamamoto, M.  ,  Yamamoto, N.  ,  Yamamoto, Y.  ,  Yano, Y.  ,  Yoshida, M.  ,  Hajima, R.  ,  Mori, M.  ,  Nagai, R.  ,  Nishimori, N.  ,  Sawamura, M.  ,  Shizuma, T.  ,  Kuriki, M.

2016-05-10
Description
The Compact Energy Recovery Linac (cERL) at KEK is a test accelerator in order to develop key components to realize remarkable ERL performance as a future light source. After the beam commissioning in December 2013, the legal current limit has been increased step-by-step like 1 uA, 10 uA, and 100 uA. Survey for the source of beam losses has been conducted in each step, and the study on beam dynamics and tuning has also been carried out. As a next step, 1 mA operation is scheduled in February 2016. In parallel to the increase in beam current, a laser Compton scattering (LCS) system which can provide high-flux X-ray to a beamline has been successfully commissioned. We report recent progress in various kinds of beam tuning: improvement of electron gun performance, high bunch charge operation, mitigation of beam losses, LCS optics tuning and bunch compression for THz radiation.
The 7th International Particle Accelerator Conference (IPAC2016)

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