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Title: Measurement of angularly dependent spectra of betatron gamma-rays from a laser plasma accelerator with quadrant-sectored range filters

Abstract

Measurement of angularly dependent spectra of betatron gamma-rays radiated by GeV electron beams from laser wakefield accelerators (LWFAs) are presented. The angle-resolved spectrum of betatron radiation was deconvolved from the position dependent data measured for a single laser shot with a broadband gamma-ray spectrometer comprising four-quadrant sectored range filters and an unfolding algorithm, based on the Monte Carlo code GEANT4. The unfolded gamma-ray spectra in the photon energy range of 0.1–10 MeV revealed an approximately isotropic angular dependence of the peak photon energy and photon energy-integrated fluence. As expected by the analysis of betatron radiation from LWFAs, the results indicate that unpolarized gamma-rays are emitted by electrons undergoing betatron motion in isotropically distributed orbit planes.

Authors:
; ; ; ; ; ; ; ;  [1]; ; ; ;  [1];  [2]; ; ; ; ; ;  [1] more »;  [2] « less
  1. Center for Relativistic Laser Science, Institute for Basic Science (IBS), Gwangju 61005 (Korea, Republic of)
  2. (Korea, Republic of)
Publication Date:
OSTI Identifier:
22600049
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 7; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ALGORITHMS; BETATRONS; ELECTRON BEAMS; ELECTRONS; FILTERS; G CODES; GAMMA RADIATION; GAMMA SPECTRA; GAMMA SPECTROMETERS; GEV RANGE; LASERS; MEV RANGE 01-10; MONTE CARLO METHOD; PHOTONS; PLASMA GUNS; WAKEFIELD ACCELERATORS

Citation Formats

Jeon, Jong Ho, E-mail: jhjeon07@ibs.re.kr, Nakajima, Kazuhisa, E-mail: naka115@dia-net.ne.jp, Rhee, Yong Joo, Pathak, Vishwa Bandhu, Cho, Myung Hoon, Shin, Jung Hun, Yoo, Byung Ju, Jo, Sung Ha, Shin, Kang Woo, Kim, Hyung Taek, Sung, Jae Hee, Lee, Seong Ku, Choi, Il Woo, Advanced Photonics Research Institute, GIST, Gwangju 61005, Hojbota, Calin, Bae, Lee Jin, Jung, Jaehyung, Cho, Min Sang, Cho, Byoung Ick, Nam, Chang Hee, and Department of Physics and Photon Science, GIST, Gwangju 61005. Measurement of angularly dependent spectra of betatron gamma-rays from a laser plasma accelerator with quadrant-sectored range filters. United States: N. p., 2016. Web. doi:10.1063/1.4956447.
Jeon, Jong Ho, E-mail: jhjeon07@ibs.re.kr, Nakajima, Kazuhisa, E-mail: naka115@dia-net.ne.jp, Rhee, Yong Joo, Pathak, Vishwa Bandhu, Cho, Myung Hoon, Shin, Jung Hun, Yoo, Byung Ju, Jo, Sung Ha, Shin, Kang Woo, Kim, Hyung Taek, Sung, Jae Hee, Lee, Seong Ku, Choi, Il Woo, Advanced Photonics Research Institute, GIST, Gwangju 61005, Hojbota, Calin, Bae, Lee Jin, Jung, Jaehyung, Cho, Min Sang, Cho, Byoung Ick, Nam, Chang Hee, & Department of Physics and Photon Science, GIST, Gwangju 61005. Measurement of angularly dependent spectra of betatron gamma-rays from a laser plasma accelerator with quadrant-sectored range filters. United States. doi:10.1063/1.4956447.
Jeon, Jong Ho, E-mail: jhjeon07@ibs.re.kr, Nakajima, Kazuhisa, E-mail: naka115@dia-net.ne.jp, Rhee, Yong Joo, Pathak, Vishwa Bandhu, Cho, Myung Hoon, Shin, Jung Hun, Yoo, Byung Ju, Jo, Sung Ha, Shin, Kang Woo, Kim, Hyung Taek, Sung, Jae Hee, Lee, Seong Ku, Choi, Il Woo, Advanced Photonics Research Institute, GIST, Gwangju 61005, Hojbota, Calin, Bae, Lee Jin, Jung, Jaehyung, Cho, Min Sang, Cho, Byoung Ick, Nam, Chang Hee, and Department of Physics and Photon Science, GIST, Gwangju 61005. 2016. "Measurement of angularly dependent spectra of betatron gamma-rays from a laser plasma accelerator with quadrant-sectored range filters". United States. doi:10.1063/1.4956447.
@article{osti_22600049,
title = {Measurement of angularly dependent spectra of betatron gamma-rays from a laser plasma accelerator with quadrant-sectored range filters},
author = {Jeon, Jong Ho, E-mail: jhjeon07@ibs.re.kr and Nakajima, Kazuhisa, E-mail: naka115@dia-net.ne.jp and Rhee, Yong Joo and Pathak, Vishwa Bandhu and Cho, Myung Hoon and Shin, Jung Hun and Yoo, Byung Ju and Jo, Sung Ha and Shin, Kang Woo and Kim, Hyung Taek and Sung, Jae Hee and Lee, Seong Ku and Choi, Il Woo and Advanced Photonics Research Institute, GIST, Gwangju 61005 and Hojbota, Calin and Bae, Lee Jin and Jung, Jaehyung and Cho, Min Sang and Cho, Byoung Ick and Nam, Chang Hee and Department of Physics and Photon Science, GIST, Gwangju 61005},
abstractNote = {Measurement of angularly dependent spectra of betatron gamma-rays radiated by GeV electron beams from laser wakefield accelerators (LWFAs) are presented. The angle-resolved spectrum of betatron radiation was deconvolved from the position dependent data measured for a single laser shot with a broadband gamma-ray spectrometer comprising four-quadrant sectored range filters and an unfolding algorithm, based on the Monte Carlo code GEANT4. The unfolded gamma-ray spectra in the photon energy range of 0.1–10 MeV revealed an approximately isotropic angular dependence of the peak photon energy and photon energy-integrated fluence. As expected by the analysis of betatron radiation from LWFAs, the results indicate that unpolarized gamma-rays are emitted by electrons undergoing betatron motion in isotropically distributed orbit planes.},
doi = {10.1063/1.4956447},
journal = {Physics of Plasmas},
number = 7,
volume = 23,
place = {United States},
year = 2016,
month = 7
}
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