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Title: Ion-induced gamma-ray detection of fast ions escaping from fusion plasmas

Abstract

A 12 × 12 pixel detector has been developed and used in a laboratory experiment for lost fast-ion diagnostics. With gamma rays in the MeV range originating from nuclear reactions {sup 9}Be(α, nγ){sup 12}C, {sup 9}Be(d, nγ){sup 12}C, and {sup 12}C(d, pγ){sup 13}C, a high purity germanium (HPGe) detector measured a fine-energy-resolved spectrum of gamma rays. The HPGe detector enables the survey of background-gamma rays and Doppler-shifted photo peak shapes. In the experiments, the pixel detector produces a gamma-ray image reconstructed from the energy spectrum obtained from total photon counts of irradiation passing through the detector's lead collimator. From gamma-ray image, diagnostics are able to produce an analysis of the fast ion loss onto the first wall in principle.

Authors:
;  [1]; ;  [2]; ;  [3];  [4];  [5]; ; ;  [6]; ;  [7];  [8];  [9]
  1. Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8561 (Japan)
  2. Graduate School of Science and Engineering, Doshisha University, Kyotanabe 610-0321 (Japan)
  3. Graduate School of Maritime Sciences, Kobe University, Kobe 658-0022 (Japan)
  4. Graduate School of Engineering, The University of Tokyo, Tokyo 113-8654 (Japan)
  5. Furukawa Co. Ltd., Tsukuba, Ibaraki 305-0856 (Japan)
  6. National Institute for Fusion Science, Toki, Gifu 509-5292 (Japan)
  7. Institute of Laser Engineering, Osaka University, Osaka 565-0871 (Japan)
  8. RIKEN SPring-8 center, RIKEN, Sayo, Hyogo 679-5148 (Japan)
  9. Tokushima Bunri University, Tokushima 770-8514 (Japan)
Publication Date:
OSTI Identifier:
22308655
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALPHA DETECTION; BERYLLIUM 9; CARBON 12; COLLIMATORS; DEUTERON REACTIONS; DOPPLER EFFECT; ENERGY SPECTRA; FIRST WALL; GAMMA DETECTION; GAMMA RADIATION; HIGH-PURITY GE DETECTORS; MEV RANGE; PHOTONS; PLASMA

Citation Formats

Nishiura, M., E-mail: nishiura@ppl.k.u-tokyo.ac.jp, Mushiake, T., Doi, K., Wada, M., Taniike, A., Matsuki, T., Shimazoe, K., Yoshino, M., Nagasaka, T., Tanaka, T., Kisaki, M., Fujimoto, Y., Fujioka, K., Yamaoka, H., and Matsumoto, Y. Ion-induced gamma-ray detection of fast ions escaping from fusion plasmas. United States: N. p., 2014. Web. doi:10.1063/1.4886764.
Nishiura, M., E-mail: nishiura@ppl.k.u-tokyo.ac.jp, Mushiake, T., Doi, K., Wada, M., Taniike, A., Matsuki, T., Shimazoe, K., Yoshino, M., Nagasaka, T., Tanaka, T., Kisaki, M., Fujimoto, Y., Fujioka, K., Yamaoka, H., & Matsumoto, Y. Ion-induced gamma-ray detection of fast ions escaping from fusion plasmas. United States. doi:10.1063/1.4886764.
Nishiura, M., E-mail: nishiura@ppl.k.u-tokyo.ac.jp, Mushiake, T., Doi, K., Wada, M., Taniike, A., Matsuki, T., Shimazoe, K., Yoshino, M., Nagasaka, T., Tanaka, T., Kisaki, M., Fujimoto, Y., Fujioka, K., Yamaoka, H., and Matsumoto, Y. 2014. "Ion-induced gamma-ray detection of fast ions escaping from fusion plasmas". United States. doi:10.1063/1.4886764.
@article{osti_22308655,
title = {Ion-induced gamma-ray detection of fast ions escaping from fusion plasmas},
author = {Nishiura, M., E-mail: nishiura@ppl.k.u-tokyo.ac.jp and Mushiake, T. and Doi, K. and Wada, M. and Taniike, A. and Matsuki, T. and Shimazoe, K. and Yoshino, M. and Nagasaka, T. and Tanaka, T. and Kisaki, M. and Fujimoto, Y. and Fujioka, K. and Yamaoka, H. and Matsumoto, Y.},
abstractNote = {A 12 × 12 pixel detector has been developed and used in a laboratory experiment for lost fast-ion diagnostics. With gamma rays in the MeV range originating from nuclear reactions {sup 9}Be(α, nγ){sup 12}C, {sup 9}Be(d, nγ){sup 12}C, and {sup 12}C(d, pγ){sup 13}C, a high purity germanium (HPGe) detector measured a fine-energy-resolved spectrum of gamma rays. The HPGe detector enables the survey of background-gamma rays and Doppler-shifted photo peak shapes. In the experiments, the pixel detector produces a gamma-ray image reconstructed from the energy spectrum obtained from total photon counts of irradiation passing through the detector's lead collimator. From gamma-ray image, diagnostics are able to produce an analysis of the fast ion loss onto the first wall in principle.},
doi = {10.1063/1.4886764},
journal = {Review of Scientific Instruments},
number = 11,
volume = 85,
place = {United States},
year = 2014,
month =
}
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