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Resolving interactions between ion-cyclotron range of frequencies heating and the scrape-off layer plasma in EAST using divertor probes

文献类型：期刊论文

作者Perkins, R. J.2; Hosea, J. C.2; Taylor, G.2; Bertelli, N.2; Kramer, G. J.2; Luo, Z. P.1; Qin, C. M.1; Wang, L.1; Xu, J. C.1; Zhang, X. J.1
刊名PLASMA PHYSICS AND CONTROLLED FUSION
出版日期2019-04-01
卷号61期号:4页码:16
关键词fusion tokamak ICRF SOL RF rectification
ISSN号0741-3335
DOI10.1088/1361-6587/aaf69c
通讯作者Perkins, R. J.(rory.perkins@ll.mit.edu)
英文摘要Waves in the ion-cyclotron range of frequencies (ICRF) used for tokamak heating are known to interact strongly with the scrape-off layer (SOL) plasma, potentially limiting ICRF performance. We present the effect of ICRF heating on triple-probe signals in the Experimental Advanced Superconducting Tokamak (EAST) experiment, an advanced superconducting tokamak with two ICRF antennas and 12 MW of ICRF source power in support of high-power and long-pulse operation. Applying time-resolved magnetic mapping to the divertor probe arrays enables detailed sensing of the spatial structure of the SOL modifications. We observe a sharp transition in floating potential from negative to positive over a length scale of a centimeter at a major radius just inboard of the ICRF antenna. The largest changes in floating potential are observed not for probes connecting to the active ICRF antennas but rather to the main limiter or limiters for inactive lower hybrid launchers. Ion saturation current can be greatly reduced for probes mapping just in front of an antenna. Where relevant, comparison with results from the National Spherical Torus Experiment are made. This work will provide insight into sputtering, impurity production and antenna coupling as higher ICRF power levels are attempted on EAST.
WOS关键词FAST WAVE ANTENNA ; ICRF ANTENNA ; RADIOFREQUENCY SHEATHS ; IMPURITY GENERATION ; BERNSTEIN WAVES ; CURRENTS ; EDGE ; CONVECTION ; RELEASE ; SYSTEM
资助项目National Key Research and Development Program[2016YFA0400601] ; China Magnetic Confinement Fusion Science Program[2015GB101001] ; US DOE[DE-AC02-09CH11466]
WOS研究方向Physics
语种英语
WOS记录号WOS:000460773200001
出版者IOP PUBLISHING LTD
资助机构National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; China Magnetic Confinement Fusion Science Program ; China Magnetic Confinement Fusion Science Program ; China Magnetic Confinement Fusion Science Program ; China Magnetic Confinement Fusion Science Program ; US DOE ; US DOE ; US DOE ; US DOE ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; China Magnetic Confinement Fusion Science Program ; China Magnetic Confinement Fusion Science Program ; China Magnetic Confinement Fusion Science Program ; China Magnetic Confinement Fusion Science Program ; US DOE ; US DOE ; US DOE ; US DOE ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; China Magnetic Confinement Fusion Science Program ; China Magnetic Confinement Fusion Science Program ; China Magnetic Confinement Fusion Science Program ; China Magnetic Confinement Fusion Science Program ; US DOE ; US DOE ; US DOE ; US DOE ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; National Key Research and Development Program ; China Magnetic Confinement Fusion Science Program ; China Magnetic Confinement Fusion Science Program ; China Magnetic Confinement Fusion Science Program ; China Magnetic Confinement Fusion Science Program ; US DOE ; US DOE ; US DOE ; US DOE
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/42332]  
专题合肥物质科学研究院_中科院等离子体物理研究所
通讯作者Perkins, R. J.
作者单位1.Chinese Acad Sci, Inst Plasma Phys, Hefei, Anhui, Peoples R China
2.Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA
推荐引用方式
GB/T 7714		 Perkins, R. J.,Hosea, J. C.,Taylor, G.,et al. Resolving interactions between ion-cyclotron range of frequencies heating and the scrape-off layer plasma in EAST using divertor probes[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2019,61(4):16.
APA Perkins, R. J..,Hosea, J. C..,Taylor, G..,Bertelli, N..,Kramer, G. J..,...&Zhang, X. J..(2019).Resolving interactions between ion-cyclotron range of frequencies heating and the scrape-off layer plasma in EAST using divertor probes.PLASMA PHYSICS AND CONTROLLED FUSION,61(4),16.
MLA Perkins, R. J.,et al."Resolving interactions between ion-cyclotron range of frequencies heating and the scrape-off layer plasma in EAST using divertor probes".PLASMA PHYSICS AND CONTROLLED FUSION 61.4(2019):16.

入库方式： OAI收割

来源：合肥物质科学研究院

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