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154 GHz Collective Thomson Scattering in LHD
http://hdl.handle.net/10655/00012635
http://hdl.handle.net/10655/0001263587f00f43-dbfa-4926-b0eb-ab660b9f8a16
名前 / ファイル | ライセンス | アクション |
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JINST13_ppC01010 (1.7 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-08-12 | |||||
タイトル | ||||||
タイトル | 154 GHz Collective Thomson Scattering in LHD | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Plasma diagnostics - interferometry | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | spectroscopy and imaging; Waveguides | |||||
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 |
TANAKA, Kenji
× TANAKA, Kenji× Nishiura, M.× KUBO, Shin× SHIMOZUMA, Takashi× Saito, T.× Moseev, D.× Abramovic, I. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Collective Thomson scattering (CTS) was developed by using a 154 GHz gyrotron, and the first data has been obtained. Already, 77 GHz CTS has worked successfully. However, in order to access higher density region, 154 GHz option enhances the usability that reduces the refraction effect, which deteriorates in the local measurements. The system in the down converted frequency was almost identical to the system for 77 GHz. Probing beam, a notch filter, a mixer, and a local oscillator in the receiver system for 77 GHz option were replaced to those for the 154 GHz option. 154 GHz gyrotron was originally prepared for the second harmonic electron cyclotron heating (ECRH) at 2.75 T. However, scattering signal was masked by the second harmonic electron cyclotron emission (ECE) at 2.75 T. Therefore, 154 GHz CTS was operated at 1.375 T with fourth harmonic ECE, and an acceptable signal to noise ratio was obtained. There is a signature of fast ion components with neutral beam (NB) injection. In addition, the CTS spectrum became broader in hydrogen discharge than in deuterium discharge, as the theoretical CTS spectrum expects. This observation indicates a possibility to identify ion species ratio by the 154 GHz CTS diagnostic. | |||||
書誌情報 |
Journal of Instrumentation 巻 13, p. C01010, 発行日 2018-01-10 |
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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 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1748-0221/13/01/C01010 | |||||
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 https://doi.org/10.1088/1748-0221/13/01/C01010 | |||||
情報源 | ||||||
関連名称 | Citation K. Tanaka et al 2018 JINST 13 C01010 | |||||
情報源 | ||||||
関連名称 | The International School for Advanced Studies (SISSA), find out more The International School for Advanced Studies (SISSA), find out more 18th International Symposium on Laser-Aided Plasma Diagnostics (LAPD18) | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1748-0221/13/01/C01010 | |||||
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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