Fast neutron-gamma discrimination on neutron emission profile measurement on JT-60U
- Department of Quantum Science and Energy Engineering, Tohoku University, Sendai 980-8579 (Japan)
- Japan Atomic Energy Agency, 801-1 Mukoyama, Naka 311-0193 (Japan)
- Cyclotron and Radioisotope Center, Tohoku University, Sendai 980-8578 (Japan)
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292 (Japan)
A digital signal processing (DSP) system is applied to stilbene scintillation detectors of the multichannel neutron emission profile monitor in JT-60U. Automatic analysis of the neutron-{gamma} pulse shape discrimination is a key issue to diminish the processing time in the DSP system, and it has been applied using the two-dimensional (2D) map. Linear discriminant function is used to determine the dividing line between neutron events and {gamma}-ray events on a 2D map. In order to verify the validity of the dividing line determination, the pulse shape discrimination quality is evaluated. As a result, the {gamma}-ray contamination in most of the beam heating phase was negligible compared with the statistical error with 10 ms time resolution.
- OSTI ID:
- 22058657
- Journal Information:
- Review of Scientific Instruments, Vol. 81, Issue 10; Other Information: (c) 2010 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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