title: Accuracy evaluation of a Compton X-ray spectrometer with bremsstrahlung X-rays generated by a 6 MeV electron bunch.
abstract: A Compton-scattering-based X-ray spectrometer is developed to obtain the energy distribution of fast electrons produced by intense laser and matter interactions. Bremsstrahlung X-rays generated by fast electrons in a material are used to measure fast electrons' energy distribution in matter. In the Compton X-ray spectrometer, X-rays are converted into recoil electrons by Compton scattering in a converter made from fused silica glass, and a magnet-based electron energy analyzer is used to measure the energy distribution of the electrons that recoil in the direction of the incident X-rays. The spectrum of the incident X-rays is reconstructed from the energy distribution of the recoil electrons. The accuracy of this spectrometer is evaluated using a quasi-monoenergetic 6 MeV electron bunch that emanates from a linear accelerator. An electron bunch is injected into a 1.5 mm thick tungsten plate to produce bremsstrahlung X-rays. The spectrum of these bremsstrahlung X-rays is obtained in the range from 1 to 9 MeV. The energy of the electrons in the bunch is estimated using a Monte Carlo simulation of particle-matter interactions. The result shows that the spectrometer's energy accuracy is ±0.5 MeV for 6.0 MeV electrons.
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Sadaoki
authors.initials: S
authors.lastname: Kojima
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Yasunobu
authors.initials: Y
authors.lastname: Arikawa
authors.affiliation: Toyota Technical Development Corporation, 1-21 Imae, Hanamoto-cho, Toyota, Aichi 470-0334, Japan.
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Nishimura
authors.affiliation: Toyota Technical Development Corporation, 1-21 Imae, Hanamoto-cho, Toyota, Aichi 470-0334, Japan.
authors.forename: Hiromi
authors.initials: H
authors.lastname: Togawa
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Takahito
authors.initials: T
authors.lastname: Ikenouchi
authors.affiliation: National Institute for Fusion Science, 322-6 Oroshicho, Toki, Gifu 509-5292, Japan.
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Ozaki
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Alessio
authors.initials: A
authors.lastname: Morace
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Nagai
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Abe
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Shouhei
authors.initials: S
authors.lastname: Sakata
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Inoue
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Masaru
authors.initials: M
authors.lastname: Utsugi
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Nakai
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Nishimura
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Shiraga
authors.affiliation: The Institute of Science and Industrial Research, Osaka University, 2-6 Yamada-oka, Suita, Osaka, Japan.
authors.forename: Ryukou
authors.initials: R
authors.lastname: Kato
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Fujioka
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Azechi