X-ray generation by inverse Compton scattering at the superconducting RF test facility

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 772; pp. 26 - 33
• Main Authors: Shimizu, Hirotaka, Akemoto, Mitsuo, Arai, Yasuo, Araki, Sakae, Aryshev, Alexander, Fukuda, Masafumi, Fukuda, Shigeki, Haba, Junji, Hara, Kazufumi, Hayano, Hitoshi, Higashi, Yasuo, Honda, Yosuke, Honma, Teruya, Kako, Eiji, Kojima, Yuji, Kondo, Yoshinari, Lekomtsev, Konstantin, Matsumoto, Toshihiro, Michizono, Shinichiro, Miyoshi, Toshinobu, Nakai, Hirotaka, Nakajima, Hiromitsu, Nakanishi, Kota, Noguchi, Shuichi, Okugi, Toshiyuki, Sato, Masato, Shevelev, Mikhail, Shishido, Toshio, Takenaka, Tateru, Tsuchiya, Kiyosumi, Urakawa, Junji, Watanabe, Ken, Yamaguchi, Seiya, Yamamoto, Akira, Yamamoto, Yasuchika, Sakaue, Kazuyuki, Hosoda, Seiichi, Iijima, Hokuto, Kuriki, Masao, Tanaka, Ryuta, Kuramoto, Ayaka, Omet, Mathieu, Takeda, Ayaki
• Format: Journal Article
• Language: English
• Published: 01.02.2015
• Subjects: Accelerators; Detectors; Holes; Inverse; Photons; Superconductivity; Test facilities; X-rays
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2014.10.080

Quasi-monochromatic X-rays with high brightness have a broad range of applications in fields such as life sciences, bio-, medical applications, and microlithography. One method for generating such X-rays is via inverse Compton scattering (ICS). X-ray generation experiments using ICS were carried out at the superconducting RF test facility (STF) accelerator at KEK. A new beam line, newly developed four-mirror optical cavity system, and new X-ray detector system were prepared for experiments downstream section of the STF electron accelerator. Amplified pulsed photons were accumulated into a four-mirror optical cavity and collided with an incoming 40 MeV electron beam. The generated X-rays were detected using a microchannel plate (MCP) detector for X-ray yield measurements and a new silicon-on-insulator (SOI) detector system for energy measurements. The detected X-ray yield by the MCP detector was 1756.8 plus or minus 272.2 photons/(244 electron bunches). To extrapolate this result to 1 ms train length under 5 Hz operations, 4.6010 super(5) photons/1%-bandwidth were obtained. The peak X-ray energy, which was confirmed by the SOI detector, was 29 keV, and this is consistent with ICS X-rays.