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Conceptual Design of a Collimator for the Neutron Emission Profile Monitor in JT-60SA Using Monte-Carlo Simulations
https://repo.qst.go.jp/records/81107
https://repo.qst.go.jp/records/81107d60b47b2-4be0-475e-a058-b0e884e1bd3b
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-11-26 | |||||
| タイトル | ||||||
| タイトル | Conceptual Design of a Collimator for the Neutron Emission Profile Monitor in JT-60SA Using Monte-Carlo Simulations | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Sumida, Shuhei
× Sumida, Shuhei× Shinohara, Koji× Nishitani, Takeo× Ogawa, Kunihiro× Bando, Takahiro× Sukegawa, Atsuhiko× Ishikawa, Masao× Takada, Eiji× Bierwage, Andreas× Oyama, Naoyuki× Shuhei, Sumida× Koji, Shinohara× Takahiro, Bando× Atsuhiko, Sukegawa× Masao, Ishikawa× Bierwage, Andreas× Naoyuki, Oyama |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Materials and structures of a collimator for a new neutron emission profile monitor in JT-60SA are examined through Monte-Carlo simulations using the Monte Carlo N-Particle transport code. First, the shielding properties of various material combinations are compared in order to determine a combination with high shielding performances against both neutrons and gamma-rays. It is found that a collimator consisting of borated polyethylene and lead has a high shielding performance against neutrons. Moreover, a high shielding performance against gamma-rays is obtained when a lead pipe with a radial thickness of 0.01 m is inserted into a collimation tube. Second, we demonstrate that it is possible to improve the spatial resolution to the desired level by installing a thin tubular extension structure that fits into the limited space available between the main collimator block and the tokamak device. Finally, the collimator structures that meet both the targeted spatial resolutions (< 10% of the plasma minor radius) and the targeted counting rate (105 cps order) are discussed. | |||||
| 書誌情報 |
Review of Scientific Instruments 巻 91, 号 11, p. 113504-1-113504-12, 発行日 2020-11 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0034-6748 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1063/5.0025902 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://aip.scitation.org/doi/10.1063/5.0025902 | |||||
