| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2026-01-23 |
| タイトル |
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タイトル |
Consideration of density measurement using toroidal interferometer and polarimeter on JA DEMO |
|
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 |
Iwasaki Kotaro
Sugiyama Shota
Ohtani Yoshiaki
Sakamoto Yoshiteru
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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 toroidal interferometer and polarimeter (TIP) have been investigated as density diagnostics for JA DEMO. A model for the interferometer and polarimeter phase shifts incorporating the finite electron temperature effect has been implemented into a plasma control simulation code to generate the synthetic phase shift signals. The laser wavelength is set to 10.6 μm identical to that used in ITER. The finite temperature effect is significant. The deviation between the estimated line-averaged densities obtained with and without accounting for finite temperature effects reaches approximately 7% for the interferometer and 10% for the polarimeter along lines of sight near the magnetic axis, and decreases to a few percent near the outer edge. Density feedback control has been performed, and a comparison is made between the line-averaged densities with and without correction for the temperature effect. When the temperature effect is neglected, the density is underestimated, leading to an increase in the actual density. Consequently, the fusion output increases, resulting in an error of up to 11% when using the central viewing chords. Correction of the density error caused by the finite electron temperature has been carried out using TIP alone by taking the difference between the interferometer and polarimeter signals. The results show that it can reduce the density error to below 1%. |
| 書誌情報 |
Fusion Engineering and Design
巻 225,
p. 115638-115638,
発行日 2026-01
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| 出版者 |
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出版者 |
ELSEVIER |
| 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 |
0920-3796 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1016/j.fusengdes.2026.115638 |
