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Studies of dust transport in long pulse plasma discharges in the large helical device
https://doi.org/10.15047/00012488
https://doi.org/10.15047/00012488bad26c5d-8737-4af8-b37d-dd86b9cba3f7
名前 / ファイル | ライセンス | アクション |
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NIFS_2015-053014 (5.0 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-04-26 | |||||
タイトル | ||||||
タイトル | Studies of dust transport in long pulse plasma discharges in the large helical device | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | LHD | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | dust | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | long pulse discharge | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | DUSTT | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | EMC3-EIRENE | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | fast framing camera | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | stereoscopic observation | |||||
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 | |||||
ID登録 | ||||||
ID登録 | 10.15047/00012488 | |||||
ID登録タイプ | JaLC | |||||
著者 |
SHOJI, Mamoru
× SHOJI, Mamoru× KASAHARA, Hiroshi× TOKITANI, Masayuki× SEKI, Tetsuo× SAITO, Kenji× KAMIO, Shuji× SEKI, Ryosuke× PIGAROV, Alexander Yu× SMIRNOV, Roman D.× KAWAMURA, Gakushi× TANAKA, Hirohiko× MASUZAKI, Suguru× UESUGI, Yoshihiko× MUTOH, Takashi× LHD, Experimental Group |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Three-dimensional trajectories of incandescent dust particles in plasmas were observed with stereoscopic fast framing cameras in a large helical device. It proved that the dust is located in the peripheral plasma and most of the dust moves along the magnetic field lines with acceleration in the direction that corresponds to the plasma flow. ICRF heated long pulse plasma discharges were terminated with the release of large amounts of dust from a closed divertor region. After the experimental campaign, the traces of exfoliation of carbon rich mixed-material deposition layers were found in the divertor region. Transport of carbon dust is investigated using a modified dust transport simulation code, which can explain the observed dust trajectories. It also shows that controlling the radius of the dust particles to less than 1 mm is necessary to prevent the plasma termination by penetration of dust for the long pulse discharges. Dust transport simulation including heavy metal dust particles demonstrates that high heating power operation is effective for shielding the main plasma from dust penetration by an enhanced plasma flow effect and a high heat load onto the dust particles in the peripheral plasma. It shows a more powerful penetration characteristic of tungsten dust particles compared to that of carbon and iron dust particles. | |||||
書誌情報 |
Nuclear Fusion 巻 55, 号 5, p. 053014, 発行日 2015-04-15 |
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出版者 | ||||||
出版者 | IOP Science | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1088/0029-5515/55/5/053014 | |||||
NAIS | ||||||
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