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Collective Thomson scattering with 77, 154, and 300 GHz sources in LHD
http://hdl.handle.net/10655/00012823
http://hdl.handle.net/10655/00012823f4f8a75e-4259-4868-afea-8b7d7f002e7a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
JINST15_ppC01002 (529.7 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-12-22 | |||||
| タイトル | ||||||
| タイトル | Collective Thomson scattering with 77, 154, and 300 GHz sources in LHD | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Plasma diagnostics | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | charged-particle spectroscopy | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Plasma diagnostics | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | interferometry | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | spectroscopy and imaging | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Plasma diagnostics | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | probes | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 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 |
Nishiura, M.
× Nishiura, M.× TANAKA, Kenji× KUBO, Shin× Saito, T.× Kenmochi, Naoki× NUGA, Hideo× SEKI, Ryosuke× SHIMOZUMA, Takashi× YOSHIMURA, Yasuo× IGAMI, Hiroe× TAKAHASHI, Hiromi× TSUJIMIRA, Toru× YANAI, R.× TATEMATSU, Yoshinori |
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| 著者ID | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 0000-0003-2410-7550 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Collective Thomson scattering (CTS) is one of attractive diagnostics for measuring locally and directly the fuel temperature and the velocity distribution of fast ions in fusion plasmas. A mega-watt class source of millimeter or sub-millimeter waves is required to detect a weak scattered radiation superimposed on background radiation owing to electron cyclotron emissions (ECEs) from plasmas. Based on electron cyclotron resonance heating (ECRH) system with the frequencies of 77 GHz and 154 GHz in the Large Helical Device (LHD), the CTS diagnostic system has been developed to measure bulk ion temperatures from a few keV to ∼10 keV and fast ions originated from 180 keV-neutral beam injection in the LHD. The measured CTS spectra and their time evolutions are analyzed with the electrostatic scattering theory. The bulk ion temperatures obtained from CTS spectra increase with the neutral beam injections and decrease with the heating terminated. The velocity map of simulated fast ions explains that the bumps on tail of measured CTS spectra are caused by the co- and counter- fast ions. A new prescription for anisotropic velocity distribution function is proposed. As for 154 GHz bands, the CTS spectrum broadenings for D and H plasmas are distinguished reasonably at the same temperature, and its ion temperatures are comparable to those of the charge exchange recombination spectroscopy. As reactor-relevant diagnostics, a 300 GHz gyrotron and a corresponding receiver system have been implemented in LHD to access high density plasmas with low background ECEs. The recent progress for CTS diagnostics and their spectrum analysis with the probe frequencies of 77 GHz, 154 GHz, and 300 GHz in the LHD experiments is described. | |||||
| 書誌情報 |
Journal of Instrumentation 巻 15, 号 January 2020, p. 011002, 発行日 2020-01-02 |
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| 書誌的事項 | ||||||
| 値 | 19th International Symposium on Laser-Aided Plasma Diagnostics 2019 | |||||
| 出版者 | ||||||
| 出版者 | IOP Publishing | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1748-0221 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA12456425 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/1748-0221/15/01/C01002 | |||||
| 権利 | ||||||
| 権利情報 | This is the Accepted Manuscript version of an article accepted for publication in Journal of Instrumentation. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi.org/10.1088/1748-0221/15/01/C01002. | |||||
| 権利 | ||||||
| 権利情報 | © 2020 IOP Publishing Ltd and Sissa Medialab | |||||
| 情報源 | ||||||
| 関連名称 | M. Nishiura et al 2020 JINST 15 C01002 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1088/1748-0221/15/01/C01002 | |||||
| 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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