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- Title
Fast response neutron emission monitor for fusion reactor using Stilbene Scintillator and Flash-ADC.
- Authors
Itoga, T.; Ishikawa, M.; Baba, M.; Okuji, T.; Oishi, T.; Nakhostin, M.; Nishitani, T.
- Abstract
The stilbene neutron detector which has been used for neutron emission profile monitoring in JT-60U has been improved, to respond to the requirement to observe the high-frequency phenomena in megahertz region such as toroidicity-induced Alfvén Eigen mode in burning plasma as well as the spatial profile and the energy spectrum. This high-frequency phenomenon is of great interest and one of the key issues in plasma physics in recent years. To achieve a fast response in the stilbene detector, a Flash-ADC is applied and the wave form of the anode signal stored directly, and neutron/gamma discrimination was carried out via software with a new scheme for data acquisition mode to extend the count rate limit to MHz region from 1.3×105 neutron/s in the past, and confirmed the adequacy of the method.
- Subjects
NEUTRONS; STILBENE; EMISSIONS (Air pollution); FUSION reactors; TOROIDAL magnetic circuits
- Publication
Radiation Protection Dosimetry, 2007, Vol 126, Issue 1-4, p380
- ISSN
0144-8420
- Publication type
Article
- DOI
10.1093/rpd/ncm141