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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:
; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1]; ;  [2];  [3];  [4]
  1. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871 (Japan)
  2. Toyota Technical Development Corporation, 1-21 Imae, Hanamoto-cho, Toyota, Aichi 470-0334 (Japan)
  3. National Institute for Fusion Science, 322-6 Oroshicho, Toki, Gifu 509-5292 (Japan)
  4. The Institute of Science and Industrial Research, Osaka University, 2-6 Yamada-oka, Suita, Osaka (Japan)
Publication Date:
OSTI Identifier:
22303468
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ACCURACY; BREMSSTRAHLUNG; COMPTON EFFECT; COMPUTERIZED SIMULATION; ELECTRONS; ENERGY SPECTRA; GLASS; LINEAR ACCELERATORS; MEV RANGE 01-10; MONTE CARLO METHOD; RECOILS; SILICA; TUNGSTEN; X-RAY SPECTROMETERS

Citation Formats

Kojima, Sadaoki, Arikawa, Yasunobu, Zhang, Zhe, Ikenouchi, Takahito, Morace, Alessio, Nagai, Takahiro, Abe, Yuki, Sakata, Shouhei, Inoue, Hiroaki, Utsugi, Masaru, Nakai, Mitsuo, Nishimura, Hiroaki, Shiraga, Hiroyuki, Fujioka, Shinsuke, Azechi, Hiroshi, Nishimura, Yasuhiko, Togawa, Hiromi, Ozaki, Tetsuo, and Kato, Ryukou. Accuracy evaluation of a Compton X-ray spectrometer with bremsstrahlung X-rays generated by a 6 MeV electron bunch. United States: N. p., 2014. Web. doi:10.1063/1.4894447.
Kojima, Sadaoki, Arikawa, Yasunobu, Zhang, Zhe, Ikenouchi, Takahito, Morace, Alessio, Nagai, Takahiro, Abe, Yuki, Sakata, Shouhei, Inoue, Hiroaki, Utsugi, Masaru, Nakai, Mitsuo, Nishimura, Hiroaki, Shiraga, Hiroyuki, Fujioka, Shinsuke, Azechi, Hiroshi, Nishimura, Yasuhiko, Togawa, Hiromi, Ozaki, Tetsuo, & Kato, Ryukou. Accuracy evaluation of a Compton X-ray spectrometer with bremsstrahlung X-rays generated by a 6 MeV electron bunch. United States. https://doi.org/10.1063/1.4894447
Kojima, Sadaoki, Arikawa, Yasunobu, Zhang, Zhe, Ikenouchi, Takahito, Morace, Alessio, Nagai, Takahiro, Abe, Yuki, Sakata, Shouhei, Inoue, Hiroaki, Utsugi, Masaru, Nakai, Mitsuo, Nishimura, Hiroaki, Shiraga, Hiroyuki, Fujioka, Shinsuke, Azechi, Hiroshi, Nishimura, Yasuhiko, Togawa, Hiromi, Ozaki, Tetsuo, and Kato, Ryukou. 2014. "Accuracy evaluation of a Compton X-ray spectrometer with bremsstrahlung X-rays generated by a 6 MeV electron bunch". United States. https://doi.org/10.1063/1.4894447.
@article{osti_22303468,
title = {Accuracy evaluation of a Compton X-ray spectrometer with bremsstrahlung X-rays generated by a 6 MeV electron bunch},
author = {Kojima, Sadaoki and Arikawa, Yasunobu and Zhang, Zhe and Ikenouchi, Takahito and Morace, Alessio and Nagai, Takahiro and Abe, Yuki and Sakata, Shouhei and Inoue, Hiroaki and Utsugi, Masaru and Nakai, Mitsuo and Nishimura, Hiroaki and Shiraga, Hiroyuki and Fujioka, Shinsuke and Azechi, Hiroshi and Nishimura, Yasuhiko and Togawa, Hiromi and Ozaki, Tetsuo and Kato, Ryukou},
abstractNote = {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.},
doi = {10.1063/1.4894447},
url = {https://www.osti.gov/biblio/22303468}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 11,
volume = 85,
place = {United States},
year = {Sat Nov 15 00:00:00 EST 2014},
month = {Sat Nov 15 00:00:00 EST 2014}
}