Stable beam operation of approximately 1 mA beam under highly efficient energy recovery conditions at compact energy-recovery linac

• DOI: 10.48550/arxiv.2408.13478
• Publication Date: 2024-08-24
• Authors: Hiroshi Sakai; Dai Arakawa; T. Furuya; K. Haga; M. Hagiwara; Kentaro Harada; Y. Honda; T. Honma; E. Kako; R. Kato; Yuuji Kojima; Taro Konomi; Hiroshi Matsumura; Taichi Miura; Takako Miura; Shinya Nagahashi; H. Nakai; Norio Nakamura; Kota Nakanishi; Kazuyuki Nigorikawa; Takashi Nogami; T. Obina; Feng Qiu; Hidenori Sagehashi; S. Sakanaka; Miho Shimada; M. Tadano; Takeshi Takahashi; Ryota Takai; Olga Tanaka; Yasunori Tanimoto; Akihiro Toyoda; Takashi Uchiyama; Kensei Umemori; Masahiro Yamamoto; Go Yoshida; N. Nishimori; Ryoichi Hajima; Ryoji Nagai; M. Sawamura
• Keywords: Beam energy

A compact energy-recovery linac (cERL) has been un-der construction at KEK since 2009 to develop key technologies for the linac. The cERL began operating in 2013 create a high-current beam with low-emittance stable continuous wave (CW) superconducting cavities. Owing development of critical components, such as DC gun, cavities, and design ideal transport optics, we have successfully established approximately 1 mA CW operation small emittance extremely loss. This study presents details our experimental results achieving 100% energy recovery loss during stable, operation.