| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-04-10 |
| タイトル |
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タイトル |
Conceptual Design of a Doppler Spectrometer for 102 m/s Cross-Field Flows in Tokamak Divertors |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
K. Fujii
佐野 竜一
仲野 友英
G. Ronchi
J.-S. Park
J. D. Lore
M. Shafer
T. M. Biewer
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The cross-field transport in the scrape-off-layers (SOLs) and divertors in tokamaks is of a similar size to the poloidal component of the parallel flow, thereby significantly impacting the plasma transport there. However, its direct observation has been challenging because the drift velocity (102?103 m/s) is significantly below the detection limit of conventional diagnostics. To realize cross-field ion flow measurement, a variety of systematic uncertainties in the system must be narrowed down. Here, we develop a conceptual design of the Doppler spectrometry that enables us to measure the impurity flows with 102-m/s accuracy based on an in situ wavelength-calibration technique developed in the astrophysics field, the iodine-cell method. We discuss its properties and applicability. In particular, the scaling relation between wavelength accuracy and various spectroscopic parameters is newly presented, which suggests the high importance of the wavelength resolution of the system. Based on transport simulations for the JT-60SA divertor, the feasibility of the system is assessed. |
| 書誌情報 |
Review of scientific instruments
号 95,
p. 073527-1-073527-6,
発行日 2024-07
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| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1089-7623 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1063/5.0219456 |
