@article{oai:repo.qst.go.jp:00075605,
 author = {Akemoto, Mitsuo and Arakawa, Dai and Asaoka, Seiji and Cenni, Enrico and Egi, Masato and Enami, Kazuhiro and Endo, Kuninori and Fukuda, Shigeki and Furuya, Takaaki and Haga, Kaiichi and Hajima, Ryoichi and Hara, Kazufumi and Harada, Kentaro and Honda, Tohru and Honda, Yosuke and Honma, Teruya and Hosoyama, Kenji and Kako, Eiji and Katagiri, Hiroaki and Kawata, Hiroshi and Kobayashi, Yukinori and Kojima, Yuuji and Kondou, Yoshinari and Tanaka, Olga and Kume, Tatsuya and Kuriki, Masao and Matsumura, Hiroshi and Matsushita, Hideki and Michizono, Shinichiro and Miura, Takako and Miyajima, Tsukasa and Nagahashi, Shinya and Nagai, Ryoji and Nakai, Hirotaka and Nakajima, Hiromitsu and Nakamura, Norio and Nakanishi, Kota and Nigorikawa, Kazuyuki and Nishimori, Nobuyuki and Nogami, Takashi and Noguchi, Shuichi and Obina, Takashi and Qiu, Feng and Sagehashi, Hidenori and Sakai, Hiroshi and Sakanaka, Shogo and Sasaki, Shinichi and Satoh, Kotaro and Sawamura, Masaru and Shimada, Miho and Shinoe, Kenji and Shishido, Toshio and Tadano, Mikito and Takahashi, Takeshi and Takai, Ryota and Takenaka, Tateru and Tanimoto, Yasunori and Uchiyama, Takashi and Ueda, Akira and Umemori, Kensei and Watanabe, Ken and Yamamoto, Masahiro and Hajima, Riyoichi and Nagai, Ryoji and Nishimori, Nobuyuki and Sawamura, Masaru},
 journal = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
 month = {Jan},
 note = {Energy-recovery linacs (ERLs) are promising for advanced synchrotron light sources, high-power free electron lasers (FELs), high-brightness gamma-ray sources, and electron–ion colliders. To demonstrate the critical technology of ERL-based light sources, we have designed and constructed a test accelerator, the compact ERL (cERL). Using advanced technology that includes a photocathode direct current (DC) electron gun and two types of 1.3-GHz-frequency superconducting cavities, the cERL was designed to be capable of recirculating low emittance (1 mm mrad) and high average-current (10 mA) electron beams while recovering the beam energy. During initial commissioning, the cERL demonstrated successful recirculation of high-quality beams with normalized transverse emittance of 0.14 mm mrad and momentum spread of 1.2 10−4 (rms) at a beam energy of 20 MeV and bunch charge below 100 fC. Energy recovery in the superconducting main linac was also demonstrated for high-average-current continuous-wave beams. These results constitute an important milestone toward realizing ERL-based light sources.},
 pages = {197--219},
 title = {Construction and commissioning of the compact energy-recovery linac at KEK},
 volume = {877},
 year = {2018}
}