Experimental observations of naturally occurring dust using a high-speed vacuum ultraviolet imaging system in EAST
In the ELMy H-mode experiment, naturally occurring dust originating at the high-field side is clearly observed using the high-speed vacuum ultraviolet imaging system developed on the Experimental Advanced Superconducting Tokamak (EAST). The main ablation cloud shape is similar to the classical shape...
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| Veröffentlicht in: | Plasma science & technology 2023-05, Vol.25 (5), p.55101 |
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| creator | HOU, Shanwei MING, Tingfeng SHI, Qiqi ZHANG, Wenmin LONG, Feifei LI, Bang DENG, Rongjing ZHUANG, Qing LIU, Xiaoju ZHANG, Ling TI, Ang ZENG, Long LI, Guoqiang ASHIKAWA, Naoko OHDACHI, Satoshi GAO, Xiang |
| description | In the ELMy H-mode experiment, naturally occurring dust originating at the high-field side is clearly observed using the high-speed vacuum ultraviolet imaging system developed on the Experimental Advanced Superconducting Tokamak (EAST). The main ablation cloud shape is similar to the classical shape observed in pellet fueling experiments. However, during the dust penetration, an erupted secondary cloudlet with a bent ‘cigar’ shape is observed and moves upwards along the direction perpendicular to the magnetic field line, which is different to the obviation in the pellet fueling experiments. This may be due to the ion diamagnetic drift effect. The velocities of the secondary cloudlet are estimated to be 50‒80 m s
−1
. In addition, a significant degradation of the plasma confinement is observed during the dust penetration. |
| doi_str_mv | 10.1088/2058-6272/acaaef |
| format | Article |
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−1
. In addition, a significant degradation of the plasma confinement is observed during the dust penetration.</description><identifier>ISSN: 1009-0630</identifier><identifier>EISSN: 2058-6272</identifier><identifier>DOI: 10.1088/2058-6272/acaaef</identifier><identifier>CODEN: PSTHC3</identifier><language>eng</language><publisher>IOP Publishing</publisher><subject>dust cloudlet ; EAST tokamak ; H-mode ; HFS ; VUVI</subject><ispartof>Plasma science & technology, 2023-05, Vol.25 (5), p.55101</ispartof><rights>2023 Hefei Institutes of Physical Science, Chinese Academy of Sciences and IOP Publishing</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c265t-ea6163981e896a838bfef3399d618c95146b23367b8e23a46a99c2d08dec066e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1088/2058-6272/acaaef/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,780,784,27923,27924,53845,53892</link.rule.ids></links><search><creatorcontrib>HOU, Shanwei</creatorcontrib><creatorcontrib>MING, Tingfeng</creatorcontrib><creatorcontrib>SHI, Qiqi</creatorcontrib><creatorcontrib>ZHANG, Wenmin</creatorcontrib><creatorcontrib>LONG, Feifei</creatorcontrib><creatorcontrib>LI, Bang</creatorcontrib><creatorcontrib>DENG, Rongjing</creatorcontrib><creatorcontrib>ZHUANG, Qing</creatorcontrib><creatorcontrib>LIU, Xiaoju</creatorcontrib><creatorcontrib>ZHANG, Ling</creatorcontrib><creatorcontrib>TI, Ang</creatorcontrib><creatorcontrib>ZENG, Long</creatorcontrib><creatorcontrib>LI, Guoqiang</creatorcontrib><creatorcontrib>ASHIKAWA, Naoko</creatorcontrib><creatorcontrib>OHDACHI, Satoshi</creatorcontrib><creatorcontrib>GAO, Xiang</creatorcontrib><title>Experimental observations of naturally occurring dust using a high-speed vacuum ultraviolet imaging system in EAST</title><title>Plasma science & technology</title><addtitle>PST</addtitle><addtitle>Plasma Sci. Technol</addtitle><description>In the ELMy H-mode experiment, naturally occurring dust originating at the high-field side is clearly observed using the high-speed vacuum ultraviolet imaging system developed on the Experimental Advanced Superconducting Tokamak (EAST). The main ablation cloud shape is similar to the classical shape observed in pellet fueling experiments. However, during the dust penetration, an erupted secondary cloudlet with a bent ‘cigar’ shape is observed and moves upwards along the direction perpendicular to the magnetic field line, which is different to the obviation in the pellet fueling experiments. This may be due to the ion diamagnetic drift effect. The velocities of the secondary cloudlet are estimated to be 50‒80 m s
−1
. In addition, a significant degradation of the plasma confinement is observed during the dust penetration.</description><subject>dust cloudlet</subject><subject>EAST tokamak</subject><subject>H-mode</subject><subject>HFS</subject><subject>VUVI</subject><issn>1009-0630</issn><issn>2058-6272</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp9kMtLAzEQh4MoWKt3j7l5cW0eTZocS6kPKHiwnsNsNtumbHeXPIr97-1S8SSeZhi-3zDzIXRPyRMlSk0YEaqQbMYmYAFcfYFGv6NLNKKE6IJITq7RTYw7QsRUKz5CYfnVu-D3rk3Q4K6MLhwg-a6NuKtxCykHaJoj7qzNIfh2g6scE85xaAFv_WZbxN65Ch_A5rzHuUkBDr5rXMJ-D5uBi8eY3B77Fi_nH-tbdFVDE93dTx2jz-flevFarN5f3hbzVWGZFKlwIKnkWlGntATFVVm7mnOtK0mV1YJOZck4l7NSOcZhKkFryyqiKmeJlI6PETnvtaGLMbja9KdHIRwNJWZwZgZBZhBkzs5OkcdzxHe92XU5tKcD_8Mf_sD7mAwTRhgiBCXU9FXNvwENFH6P</recordid><startdate>20230501</startdate><enddate>20230501</enddate><creator>HOU, Shanwei</creator><creator>MING, Tingfeng</creator><creator>SHI, Qiqi</creator><creator>ZHANG, Wenmin</creator><creator>LONG, Feifei</creator><creator>LI, Bang</creator><creator>DENG, Rongjing</creator><creator>ZHUANG, Qing</creator><creator>LIU, Xiaoju</creator><creator>ZHANG, Ling</creator><creator>TI, Ang</creator><creator>ZENG, Long</creator><creator>LI, Guoqiang</creator><creator>ASHIKAWA, Naoko</creator><creator>OHDACHI, Satoshi</creator><creator>GAO, Xiang</creator><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20230501</creationdate><title>Experimental observations of naturally occurring dust using a high-speed vacuum ultraviolet imaging system in EAST</title><author>HOU, Shanwei ; MING, Tingfeng ; SHI, Qiqi ; ZHANG, Wenmin ; LONG, Feifei ; LI, Bang ; DENG, Rongjing ; ZHUANG, Qing ; LIU, Xiaoju ; ZHANG, Ling ; TI, Ang ; ZENG, Long ; LI, Guoqiang ; ASHIKAWA, Naoko ; OHDACHI, Satoshi ; GAO, Xiang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c265t-ea6163981e896a838bfef3399d618c95146b23367b8e23a46a99c2d08dec066e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>dust cloudlet</topic><topic>EAST tokamak</topic><topic>H-mode</topic><topic>HFS</topic><topic>VUVI</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>HOU, Shanwei</creatorcontrib><creatorcontrib>MING, Tingfeng</creatorcontrib><creatorcontrib>SHI, Qiqi</creatorcontrib><creatorcontrib>ZHANG, Wenmin</creatorcontrib><creatorcontrib>LONG, Feifei</creatorcontrib><creatorcontrib>LI, Bang</creatorcontrib><creatorcontrib>DENG, Rongjing</creatorcontrib><creatorcontrib>ZHUANG, Qing</creatorcontrib><creatorcontrib>LIU, Xiaoju</creatorcontrib><creatorcontrib>ZHANG, Ling</creatorcontrib><creatorcontrib>TI, Ang</creatorcontrib><creatorcontrib>ZENG, Long</creatorcontrib><creatorcontrib>LI, Guoqiang</creatorcontrib><creatorcontrib>ASHIKAWA, Naoko</creatorcontrib><creatorcontrib>OHDACHI, Satoshi</creatorcontrib><creatorcontrib>GAO, Xiang</creatorcontrib><collection>CrossRef</collection><jtitle>Plasma science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>HOU, Shanwei</au><au>MING, Tingfeng</au><au>SHI, Qiqi</au><au>ZHANG, Wenmin</au><au>LONG, Feifei</au><au>LI, Bang</au><au>DENG, Rongjing</au><au>ZHUANG, Qing</au><au>LIU, Xiaoju</au><au>ZHANG, Ling</au><au>TI, Ang</au><au>ZENG, Long</au><au>LI, Guoqiang</au><au>ASHIKAWA, Naoko</au><au>OHDACHI, Satoshi</au><au>GAO, Xiang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental observations of naturally occurring dust using a high-speed vacuum ultraviolet imaging system in EAST</atitle><jtitle>Plasma science & technology</jtitle><stitle>PST</stitle><addtitle>Plasma Sci. Technol</addtitle><date>2023-05-01</date><risdate>2023</risdate><volume>25</volume><issue>5</issue><spage>55101</spage><pages>55101-</pages><issn>1009-0630</issn><eissn>2058-6272</eissn><coden>PSTHC3</coden><abstract>In the ELMy H-mode experiment, naturally occurring dust originating at the high-field side is clearly observed using the high-speed vacuum ultraviolet imaging system developed on the Experimental Advanced Superconducting Tokamak (EAST). The main ablation cloud shape is similar to the classical shape observed in pellet fueling experiments. However, during the dust penetration, an erupted secondary cloudlet with a bent ‘cigar’ shape is observed and moves upwards along the direction perpendicular to the magnetic field line, which is different to the obviation in the pellet fueling experiments. This may be due to the ion diamagnetic drift effect. The velocities of the secondary cloudlet are estimated to be 50‒80 m s
−1
. In addition, a significant degradation of the plasma confinement is observed during the dust penetration.</abstract><pub>IOP Publishing</pub><doi>10.1088/2058-6272/acaaef</doi><tpages>7</tpages></addata></record> |
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| subjects | dust cloudlet EAST tokamak H-mode HFS VUVI |
| title | Experimental observations of naturally occurring dust using a high-speed vacuum ultraviolet imaging system in EAST |
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