The achievement of the Te,div feedback control by CD4 seeding on EAST

doi:10.1088/1361-6587/ac1b20

	The achievement of the Te,div feedback control by CD4 seeding on EAST
	Wu,K 2,3; Yuan,Q 3; Xu,G 3; Wang,L 3; Eldon,D 5; Li,K 3,4; Liu,X 3; Meng,L 3,4; Zhang,L 3; Wang,Y 3
刊名	Plasma Physics and Controlled Fusion
	2021-08-27
卷号	63
关键词	EAST divertor CD4 Te,div SOL
ISSN号	0741-3335
DOI	10.1088/1361-6587/ac1b20
通讯作者	Yuan,Q() ; Xu,G()
英文摘要	AbstractA multi-function divertor feedback control system has been built on Experimental Advanced Superconducting Tokamak (EAST) to treat the divertor heat load issue. With the real-time data of the Langmuir probes and the impurity seeding, the divertor electron temperature (Te,div) is well controlled to achieve the partial detachment phase. The first trial of the CD4 seeding for the Te,div reduction has been achieved on EAST long-pulse discharge. In the seeding phase, the Te,div was maintained close to 5 eV, and the surface temperature of the target plate (Tsurface,div) had a reduction of about 150 °C. The plasma stored energy had a reduction in the control phase, so it is necessary to find a way to keep the good plasma confinement in the next step. The CD4 injection also mitigated the low hybrid wave coupling rate in some degree. The big volume of the CD4 injection lifted the Greenwald density fraction from ～0.4 to ～0.7, which made the SOL into high recycling state. Most of the injected carbon particles were in the high ionized state, and with the lower of the Te,div, the tungsten line emission was suppressed obviously.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:0741-3335-63-10-AC1B20
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125359]
专题	中国科学院合肥物质科学研究院
通讯作者	Yuan,Q; Xu,G
作者单位	1.Consorzio RFX laboratory, Padova, Italy 2.Department of Economics, Engineering, Society and Business Organization (DEIm), Università degli studi della Tuscia, Via del paradiso, 47, Viterbo 01100, Italy 3.Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Shushanhu Road 350, 230031 Hefei, People’s Republic of China 4.University of Science and Technology in China, Jinzhai Road 59, 230026 Hefei, People’s Republic of China 5.General Atomics, PO Box 85608, San Diego, CA 92186-5608, United States of America
推荐引用方式 GB/T 7714	Wu,K,Yuan,Q,Xu,G,et al. The achievement of the Te,div feedback control by CD4 seeding on EAST[J]. Plasma Physics and Controlled Fusion,2021,63.
APA	Wu,K.,Yuan,Q.,Xu,G.,Wang,L.,Eldon,D.,...&Li,J.(2021).The achievement of the Te,div feedback control by CD4 seeding on EAST.Plasma Physics and Controlled Fusion,63.
MLA	Wu,K,et al."The achievement of the Te,div feedback control by CD4 seeding on EAST".Plasma Physics and Controlled Fusion 63(2021).