Illustrating the physics of core tungsten (W) transport in a long-pulse steady-state H-mode discharge on EAST

doi:10.1088/1741-4326/ac548b

	Illustrating the physics of core tungsten (W) transport in a long-pulse steady-state H-mode discharge on EAST
	Shi, Shengyu 1,2; Chen, Jiale 2; Jian, Xiang 3,4; Clarrisse, Bourdelle 5; Wu, Muquan 6; Wu, Mingfu 2; Duan, Yanmin 2; Chao, Yan 2; Zhang, Ling 2; Cheng, Yunxin 2
刊名	NUCLEAR FUSION
	2022-06-01
卷号	62
关键词	EAST long-pulse steady-state H-mode core tungsten (W) transport experiment and modelling
ISSN号	0029-5515
DOI	10.1088/1741-4326/ac548b
通讯作者	Chen, Jiale(chen@ipp.ac.cn) ; Gao, Xiang(xgao@ipp.ac.cn)
英文摘要	The behavior of core tungsten (W) in a pure radio-frequency-heated long-pulse steady-state H-mode discharge in the Experimental Advanced Superconducting Tokamak (EAST) with an ITER-like divertor (ILD) is analyzed using experimental diagnostic data and modeled using a combination of drift-kinetic neoclassical and gyro-fluid turbulent software. In the steady state, the experimental core line-averaged W concentration (C (W)) is about 2 x 10(-5), which is evaluated using the intensity of the W unresolved transition array (W-UTA) spectral structure in the region of 45-70 angstrom (which is composed of W (27+)-W (45+) line emissions) through spectroscopy in the extreme ultraviolet region. W produces a peak of the radiated power density profile around a normalized radius of rho similar to 0.3. Therefore, W does not centrally accumulate in the experiment. A time slice of the steady-state is modeled, which accounts for both the neoclassical and turbulent transport components of W based on the self-consistent background plasma profiles simulated by TGYRO (Candy et al 2009 Phys. Plasmas 16 060704). It is found that turbulent transport dominates over neoclassical transport for W. In addition, the turbulent diffusion coefficient is large enough to offset the sum of the neoclassical and turbulent pinch (convection) velocities, so that the W density profile for a zero particle flux is not strongly peaked. By combining TGLF (Staebler et al 2017 Nucl. Fusion 57 066046) and NEO (Belli and Candy 2008 Plasma Phys. Control. Fusion 50 095010; 2012 Plasma Phys. Control. Fusion 54 015015) for the W transport coefficient with the impurity transport code STRAHL (Dux 2006 STRAHL User Manual), the experimental C (W) and the information radiated by W can be reproduced closely. In addition, the effect of toroidal rotation on the W transport is also clarified.
资助项目	Outstanding Project Funding for Young Researcher in ASIPP[DSJJ-2020-03] ; National Nature Science Foundation of China[12175277] ; National Nature Science Foundation of China[11975271] ; National Nature Science Foundation of China[11975273] ; National Nature Science Foundation of China[11775269]
WOS关键词	IMPURITY TRANSPORT ; PROFILE ; TOKAMAK
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000784123100001
资助机构	Outstanding Project Funding for Young Researcher in ASIPP ; National Nature Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/128607]
专题	中国科学院合肥物质科学研究院
通讯作者	Chen, Jiale; Gao, Xiang
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.Univ Calif San Diego, Ctr Energy Res, La Jolla, CA 92093 USA 4.Gen Atom, POB 85608, San Diego, CA 92186 USA 5.CEA, IRFM, F-13108 St Paul Les Durance, France 6.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China
推荐引用方式 GB/T 7714	Shi, Shengyu,Chen, Jiale,Jian, Xiang,et al. Illustrating the physics of core tungsten (W) transport in a long-pulse steady-state H-mode discharge on EAST[J]. NUCLEAR FUSION,2022,62.
APA	Shi, Shengyu.,Chen, Jiale.,Jian, Xiang.,Clarrisse, Bourdelle.,Wu, Muquan.,...&Odstrcil, Tomas.(2022).Illustrating the physics of core tungsten (W) transport in a long-pulse steady-state H-mode discharge on EAST.NUCLEAR FUSION,62.
MLA	Shi, Shengyu,et al."Illustrating the physics of core tungsten (W) transport in a long-pulse steady-state H-mode discharge on EAST".NUCLEAR FUSION 62(2022).