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Title: Wide dynamic range neutron flux monitor having fast time response for the Large Helical Device

A fast time response, wide dynamic range neutron flux monitor has been developed toward the LHD deuterium operation by using leading-edge signal processing technologies providing maximum counting rate up to ∼5 × 10{sup 9} counts/s. Because a maximum total neutron emission rate over 1 × 10{sup 16} n/s is predicted in neutral beam-heated LHD plasmas, fast response and wide dynamic range capabilities of the system are essential. Preliminary tests have demonstrated successful performance as a wide dynamic range monitor along the design.
Authors:
;  [1] ;  [2] ; ; ; ;  [1] ; ; ;  [3] ;  [4] ;  [5] ; ; ; ; ;  [6] ;  [7]
  1. National Institute for Fusion Science, Toki 509-5292 (Japan)
  2. (Japan)
  3. Department of Materials, Physics and Energy Engineering, Nagoya University, Nagoya 464-8603 (Japan)
  4. Kyoto University Research Reactor Institute, Kumatori 590-0494 (Japan)
  5. Japan Atomic Energy Agency, Rokkasho 039-3212 (Japan)
  6. Toshiba Corporation, Fuchu 183-8511 (Japan)
  7. Toshiba Nuclear Engineering Services Corporation, Yokohama 235-8523 (Japan)
Publication Date:
OSTI Identifier:
22308937
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; COUNTING RATES; DEUTERIUM; LHD DEVICE; MONITORS; NEUTRON EMISSION; NEUTRON FLUX; PLASMA