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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/10655/00012823
f4f8a75e-4259-4868-afea-8b7d7f002e7a
名前 / ファイル ライセンス アクション
JINST15_ppC01002.pdf JINST15_ppC01002 (529.7 kB)
license.icon
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.

Nishiura, M.

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TANAKA, Kenji

× TANAKA, Kenji

TANAKA, Kenji

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KUBO, Shin

× KUBO, Shin

KUBO, Shin

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Saito, T.

× Saito, T.

Saito, T.

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Kenmochi, Naoki

× Kenmochi, Naoki

Kenmochi, Naoki

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NUGA, Hideo

× NUGA, Hideo

NUGA, Hideo

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SEKI, Ryosuke

× SEKI, Ryosuke

SEKI, Ryosuke

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SHIMOZUMA, Takashi

× SHIMOZUMA, Takashi

SHIMOZUMA, Takashi

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YOSHIMURA, Yasuo

× YOSHIMURA, Yasuo

YOSHIMURA, Yasuo

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IGAMI, Hiroe

× IGAMI, Hiroe

IGAMI, Hiroe

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TAKAHASHI, Hiromi

× TAKAHASHI, Hiromi

TAKAHASHI, Hiromi

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TSUJIMIRA, Toru

× TSUJIMIRA, Toru

TSUJIMIRA, Toru
TSUJIMURA, Toru Ii

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YANAI, R.

× YANAI, R.

YANAI, R.

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TATEMATSU, Yoshinori

× TATEMATSU, Yoshinori

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
書誌的事項
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
NAIS
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Cite as

Nishiura, M., TANAKA, Kenji, KUBO, Shin, Saito, T., Kenmochi, Naoki, NUGA, Hideo, SEKI, Ryosuke, SHIMOZUMA, Takashi, YOSHIMURA, Yasuo, IGAMI, Hiroe, TAKAHASHI, Hiromi, TSUJIMURA, Toru Ii, YANAI, R., TATEMATSU, Yoshinori, 2020, Collective Thomson scattering with 77, 154, and 300 GHz sources in LHD: IOP Publishing, 011002– p.

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