Time-resolved secondary triton burnup 14 MeV neutron measurement by a new scintillating fiber detector in middle total neutron emission ranges in deuterium large helical device plasma experiments
In: AAPPS Bulletin, Jg. 31 (2021), Heft 1, S. 1-9
Online
academicJournal
Zugriff:
Abstract A middle-sensitivity scintillating fiber detector (hereafter middle Sci-Fi detector) that works at a deuterium-tritium neutron flux of ~105-107 cm−2s−1 was utilized to measure secondary deuterium-tritium neutron emission rates with high temporal resolution at a total neutron emission rate of 1013 to 1015 n/s, where strong magnetohydrodynamic (MHD) instabilities were observed in the large helical device deuterium plasma experiments. The gain and angular characteristics of the middle Sci-Fi detector were evaluated in an accelerator-based deuterium-tritium neutron source in the intense 14 MeV neutron source facility at Osaka University. Observation of 1 MeV triton transport due to MHD instability was performed by a middle Sci-Fi detector whose deuterium-tritium neutron counting rate was approximately 20 times higher than that of the conventional Sci-Fi detector. Fusion-born triton transport due to energetic-particle-driven MHD instability was observed using the middle Sci-Fi detector due to its high detection efficiency and high discrimination ability of deuterium-tritium neutrons from the sea of deuterium-deuterium neutrons.
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Time-resolved secondary triton burnup 14 MeV neutron measurement by a new scintillating fiber detector in middle total neutron emission ranges in deuterium large helical device plasma experiments
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Autor/in / Beteiligte Person: | Ogawa, K. ; Isobe, M. ; Sangaroon, S. ; Takada, E. ; Nakada, T. ; Murakami, S. ; Jo, J. ; Zhong, G. Q. ; Zhang, Yipo ; Tamaki, S. ; Murata, I. |
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Zeitschrift: | AAPPS Bulletin, Jg. 31 (2021), Heft 1, S. 1-9 |
Veröffentlichung: | Springer, 2021 |
Medientyp: | academicJournal |
ISSN: | 2309-4710 (print) |
DOI: | 10.1007/s43673-021-00023-2 |
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