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

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4891049· OSTI ID:22308937

Takeiri, Y. ^[1]; Ogawa, K.; Miyake, H.; Hayashi, H.; Kobuchi, T. ^[1]; Nakano, Y.; Watanabe, K.; Uritani, A. ^[2]; Misawa, T. ^[3]; Nishitani, T. ^[4]; Tomitaka, M.; Kumagai, T.; Mashiyama, Y.; Ito, D.; Kono, S. ^[5]; Yamauchi, M. ^[6]

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1. National Institute for Fusion Science, Toki 509-5292 (Japan)
2. Department of Materials, Physics and Energy Engineering, Nagoya University, Nagoya 464-8603 (Japan)
3. Kyoto University Research Reactor Institute, Kumatori 590-0494 (Japan)
4. Japan Atomic Energy Agency, Rokkasho 039-3212 (Japan)
5. Toshiba Corporation, Fuchu 183-8511 (Japan)
6. Toshiba Nuclear Engineering Services Corporation, Yokohama 235-8523 (Japan)

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.

• OSTI ID: 22308937
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

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