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https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00012009
2023-01-16T03:58:39Z
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Development of 2.5MeV neutron spectrometer for helical deuterium plasma experiment
Iwai, H.
Iguchi, T.
Tomita, H.
Kawarabayashi, J.
Isobe, M.
Konno, C.
open access
©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
A neutron spectrometer with associated particles coincident time-of-flight technique is being developed for deuterium plasma experiments in a large helical fusion device. In this experiment, the energy resolution less than 7% and the detection efficiency larger than 10-6 counts/neutron is required for the plasma diagnostics based on neutron spectrometry. The prototype spectrometer was partly assembled and the detector performance was experimentally checked at Fusion Neutron Source of Japan Atomic Energy Agency. By selecting the events with low energy loss from all coincident events in the radiator, the experimental results showed that the neutron spectrometer could achieve an energy resolution around 6.7% under a detection efficiency of 3.3Ã 10-7 counts/neutron for DD neutrons. To improve the detection efficiency, the configuration of the neutron spectrometer system was designed toward the DD plasma experiment at an existent large helical fusion device.
IEEE
2009-09-24
eng
journal article
VoR
http://hdl.handle.net/2237/13885
https://nagoya.repo.nii.ac.jp/records/12009
https://doi.org/10.1109/NSSMIC.2009.5402336
1082-3654
Nuclear Science Symposium Conference Record (NSS/MIC)
1356
1359
https://nagoya.repo.nii.ac.jp/record/12009/files/iguchi.pdf
application/pdf
230.0 kB
2018-02-20