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Design and optimization of an advanced time-of-flight neutron spectrometer for deuterium plasmas of the large helical device
http://hdl.handle.net/10655/00012771
http://hdl.handle.net/10655/00012771c9a90092-5f9e-462a-b36e-987708948b81
名前 / ファイル | ライセンス | アクション |
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Rev.Sci.Instr_92_053547 (1.2 MB)
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VoR_Rev.Sci.Instrum_92_053547 (6.1 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-12-17 | |||||
タイトル | ||||||
タイトル | Design and optimization of an advanced time-of-flight neutron spectrometer for deuterium plasmas of the large helical device | |||||
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 | |||||
著者 |
Zhang, Yimo
× Zhang, Yimo× Ge, Lijan× Hu, Zhimeng× Sun, Jiaqi× OGAWA, Kunihoro× ISOBE, Mitsutaka× Sangaroon, Siriyaporn× Liao, Longyong× Yang, Danke× Gorini, Giuseppe× Nocente, Massimo× Tardocchi, Marco× Fan, Tieshuan |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0001-9815-5083 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A time-of-flight neutron spectrometer based on the Time-Of-Flight Enhanced Diagnostic (TOFED) concept has been designed and is under development for the Large Helical Device (LHD). It will be the first advanced neutron spectrometer to measure the 2.45 MeV D–D neutrons (DDNs) from helical/stellarator plasmas. The main mission of the new TOFED is to study the supra-thermal deuterons generated from the auxiliary heating systems in helical plasmas by measuring the time-of-flight spectra of DDN. It will also measure the triton burnup neutrons (TBNs) from the d+t reactions, unlike the original TOFED in the EAST tokamak. Its capability of diagnosing the TBN ratios is evaluated in this work. This new TOFED is expected to be installed in the basement under the LHD hall and shares the collimator with one channel of the vertical neutron camera to define its line of sight. The distance from its primary scintillators to the equatorial plane of LHD plasmas is about 15.5 m. Based on Monte Carlo simulation by a GEANT4 model, the resolution of the DDN energy spectra is 6.6%. When projected onto the neutron rates that are typically obtained in LHD deuterium plasmas (an order of 1015 n/s with neutral beam injection), we expect to obtain the DDN and TBN counting rates of about 2.5 · 105 counts/s and 250 counts/s, respectively. This will allow us to analyze the DDN time-of-flight spectra on time scales of 0.1 s and diagnose the TBN emission rates in several seconds with one instrument, for the first time in helical/stellarator plasmas. | |||||
書誌情報 |
Review of Scientific Instruments 巻 92, 号 5, p. 053547, 発行日 2021-05-24 |
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出版者 | ||||||
出版者 | AIP Publishing | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00346748 | |||||
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収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00817730 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1063/5.0043766 | |||||
権利 | ||||||
権利情報 | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Review of Scientific Instruments 92, 053547 (2021) and may be found at https://aip.scitation.org/doi/abs/10.1063/5.0043766. Copyright 2021 Author(s). This article is distributed under a Creative Commons Attribution (CC BY) License. | |||||
情報源 | ||||||
関連名称 | Review of Scientific Instruments 92, 053547 (2021); https://doi.org/10.1063/5.0043766 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/5.0043766 | |||||
関連名称 | PUblisher version | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
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