Fast neutron-gamma discrimination on neutron emission profile measurement on JT-60U

K. Ishii; K. Shinohara; M. Ishikawa; M. Baba; M. Isobe; A. Okamoto; S. Kitajima; M. Sasao

doi:10.1063/1.3496986

Fast neutron-gamma discrimination on neutron emission profile measurement on JT-60U

K. Ishii, K. Shinohara, M. Ishikawa, M. Baba, M. Isobe, A. Okamoto, S. Kitajima, M. Sasao

工学研究科・量子エネルギー工学専攻

研究成果: Article › 査読

6 被引用数 (Scopus)

抄録

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- γ 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 γ -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 γ -ray contamination in most of the beam heating phase was negligible compared with the statistical error with 10 ms time resolution.

本文言語	English
論文番号	10D334
ジャーナル	Review of Scientific Instruments
巻	81
号	10
DOI	https://doi.org/10.1063/1.3496986
出版ステータス	Published - 2010 10月

ASJC Scopus subject areas

器械工学

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10.1063/1.3496986

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title = "Fast neutron-gamma discrimination on neutron emission profile measurement on JT-60U",

abstract = "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- γ 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 γ -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 γ -ray contamination in most of the beam heating phase was negligible compared with the statistical error with 10 ms time resolution.",

author = "K. Ishii and K. Shinohara and M. Ishikawa and M. Baba and M. Isobe and A. Okamoto and S. Kitajima and M. Sasao",

note = "Funding Information: The authors would like to express their appreciation to the JT-60U team for their contribution to the operation of JT-60U. This work was performed partially with the support of a Grant-in-Aid from the Ministry of Education, Culture, Sports, Science, and Technology of Japan, “Priority area of Advanced Burning Plasma Diagnostics.”",

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doi = "10.1063/1.3496986",

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T1 - Fast neutron-gamma discrimination on neutron emission profile measurement on JT-60U

AU - Ishii, K.

AU - Shinohara, K.

AU - Ishikawa, M.

AU - Baba, M.

AU - Isobe, M.

AU - Okamoto, A.

AU - Kitajima, S.

AU - Sasao, M.

N1 - Funding Information: The authors would like to express their appreciation to the JT-60U team for their contribution to the operation of JT-60U. This work was performed partially with the support of a Grant-in-Aid from the Ministry of Education, Culture, Sports, Science, and Technology of Japan, “Priority area of Advanced Burning Plasma Diagnostics.”

PY - 2010/10

Y1 - 2010/10

N2 - 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- γ 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 γ -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 γ -ray contamination in most of the beam heating phase was negligible compared with the statistical error with 10 ms time resolution.

AB - 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- γ 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 γ -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 γ -ray contamination in most of the beam heating phase was negligible compared with the statistical error with 10 ms time resolution.

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Fast neutron-gamma discrimination on neutron emission profile measurement on JT-60U

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