{"title":"Increase of Central Ion Temperature After Carbon Pellet Injection in Ne-Seeded NBI Discharges","authors":"Morita Shigeru, Nozato Hideaki, Takeiri Yasuhiko, Goto Motoshi, Ikeda Katsunori, Inagaki Shigeru, Kaneko Osamu, Kawahata Kazuo, Miyazawa Jyun-ichi, Muto Sadatsugu, Mutoh Takashi, Nagaoka Kenichi, Nagayama Yoshio, Oka Yoshihide, Osakabe Masaki, Sakakibara Satoru, Sakamoto Ryuichi, T. Kenji, Tokuzawa Tokihiko, Tsumori Katsuyoshi, Yamada Hiroshi","doi":"10.1585/JSPF.79.641","DOIUrl":null,"url":null,"abstract":"A cylindrical carbon pellet with a size of 1.0 mm φ × 1.0 mm L was injected into low-density (ne = 0.3‐0.5 × 10 13 cm -3 ) neon-seeded NBI plasmas of the Large Helical Device (LHD). When the two NBI beam pulses were delayed just after the pellet injection, a large increment of central ion temperature up to 5 keV was observed with the appearance of a peaked density profile (ne0 /〈ne〉~2.5) and enhanced toroidal rotation speed up to 35 km/s. Improvement of the ion transport is expected with the suggestion of a new operational scenario for confinement improvement in the LHD.","PeriodicalId":7974,"journal":{"name":"Annual Report of National Institute for Fusion Science","volume":"115 ","pages":"5"},"PeriodicalIF":0.0000,"publicationDate":"2003-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annual Report of National Institute for Fusion Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1585/JSPF.79.641","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
A cylindrical carbon pellet with a size of 1.0 mm φ × 1.0 mm L was injected into low-density (ne = 0.3‐0.5 × 10 13 cm -3 ) neon-seeded NBI plasmas of the Large Helical Device (LHD). When the two NBI beam pulses were delayed just after the pellet injection, a large increment of central ion temperature up to 5 keV was observed with the appearance of a peaked density profile (ne0 /〈ne〉~2.5) and enhanced toroidal rotation speed up to 35 km/s. Improvement of the ion transport is expected with the suggestion of a new operational scenario for confinement improvement in the LHD.
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