Increased heat dissipation with the X-divertor geometry facilitating detachment onset at lower density in DIII-D

doi:10.1088/1741-4326/aa7644

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院等离子体物理研究所

	Increased heat dissipation with the X-divertor geometry facilitating detachment onset at lower density in DIII-D
	Covele, B.1; Kotschenreuther, M.2; Mahajan, S.2; Valanju, P.2; Leonard, A.1; Watkins, J.3; Makowski, M.4; Fenstermacher, M.4; Si, H.5
刊名	NUCLEAR FUSION
	2017-08-01
卷号	57 期号:8 页码:1-10
关键词	X-divertor Detachment Diii-d Flux Expansion Magnetic Geometry Divertor
DOI	10.1088/1741-4326/aa7644
文献子类	Article
英文摘要	The X-divertor geometry on DIII-D has demonstrated reduced particle and heat fluxes to the target, facilitating detachment onset at 10-20% lower upstream density and higher H-mode pedestal pressure than a standard divertor. SOLPS modeling suggests that this effect cannot be explained by an increase in total connection length alone, but rather by the addition of connection length specifically in the power-dissipating volume near the target, via poloidal flux expansion and flaring. However, poloidal flaring must work synergistically with divertor closure to most effectively reduce the detachment density threshold. The model also points to carbon radiation as the primary driver of power dissipation in divertors on the DIII-D floor, which is consistent with experimental observations. Sustainable divertor detachment at lower density has beneficial consequences for energy confinement and current drive efficiency for core operation, while simultaneously satisfying the exhaust requirements of the plasma-facing components.
WOS关键词	PLASMA
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000404276400001
资助机构	U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; 11347113) ; 11347113) ; 11347113) ; 11347113) ; 11347113) ; 11347113) ; 11347113) ; 11347113) ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; U.S. DOE(DE-FC02-04ER54698 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; National Natural Science Foundation of China(11505234 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; DE-FG02-04ER54754 ; 11347113) ; 11347113) ; 11347113) ; 11347113) ; 11347113) ; 11347113) ; 11347113) ; 11347113) ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-FG03-96ER54366 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC52-07NA27344 ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; DE-AC04-94AL85000) ; DE-AC04-94AL85000)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/31967]
专题	合肥物质科学研究院_中科院等离子体物理研究所
作者单位	1.Gen Atom, San Diego, CA 92121 USA 2.Univ Texas Austin, Austin, TX 78712 USA 3.Sandia Natl Labs, Albuquerque, NM USA 4.Lawrence Livermore Natl Lab, Livermore, CA USA 5.Chinese Acad Sci, Inst Plasma Phys, Hefei, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Covele, B.,Kotschenreuther, M.,Mahajan, S.,et al. Increased heat dissipation with the X-divertor geometry facilitating detachment onset at lower density in DIII-D[J]. NUCLEAR FUSION,2017,57(8):1-10.
APA	Covele, B..,Kotschenreuther, M..,Mahajan, S..,Valanju, P..,Leonard, A..,...&Si, H..(2017).Increased heat dissipation with the X-divertor geometry facilitating detachment onset at lower density in DIII-D.NUCLEAR FUSION,57(8),1-10.
MLA	Covele, B.,et al."Increased heat dissipation with the X-divertor geometry facilitating detachment onset at lower density in DIII-D".NUCLEAR FUSION 57.8(2017):1-10.