Study of the mechanism of ITB formation and sustainment with optimized q profiles in ELMy H mode discharges on the EAST

doi:10.1088/1361-6587/ac1b1f

HFCAS OpenIR

	Study of the mechanism of ITB formation and sustainment with optimized q profiles in ELMy H mode discharges on the EAST
	Chu,Y Q 1,2; Liu,H Q 1; Zhang,S B 1; Jie,Y X 1; Lian,H 3; Wu,M Q 4,5; Zhu,X 4,5; Wu,C B 1,2; Xu,L Q 1; Wang,Y F 1,6; Wang,S X 1; Zhang,T 1; Yang,Y 1; Hanada,K 7; Lyu,B 1; Li,Y Y 1; Zang,Q 1
	2021-08-27
发表期刊	Plasma Physics and Controlled Fusion
ISSN	0741-3335
通讯作者	Zhang,S B()
摘要	AbstractRecently, improved confinement plasma with the internal transport barrier (ITB) on the Experimental Advanced Superconducting Tokamak has been achieved through extensive experiments in high βN scenario development. ELMy H-mode plasmas are heated by lower hybrid wave and neutral beam injection, with BT = 1.6 T, Ip = 400/450 kA and q95 in the range 3.7–4.6. ITB with optimized reversal q profiles and central flat q profiles are observed in these H-mode plasmas, which lead to better confinement. The electron temperature ITB, ion temperature ITB, and electron density ITB exhibit different characteristics. In this paper, the formation and sustainment of ITB on ne channel has great relationship with magnetohydrodynamics (MHD) behaviors. For Te channel, q profile has a dominating effect. Reversal magnetic shear and MHD behaviors are both effective in Ti ITB formation. Suppression of turbulence in the ITB region is the common reason on all the channels. In addition, the power threshold of the ITB formation should be concentrated on electrons and ions separately. The results of this study can widen the understanding of ITB and be helpful in exploring better candidate operational scenarios for future fusion devices.
关键词	high normalized beta ITB q profile MHD
DOI	10.1088/1361-6587/ac1b1f
语种	英语
WOS记录号	IOP:0741-3335-63-10-ac1b1f
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/125358
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang,S B
作者单位	1.Institute of Plasma Physics, Chinese Academy of Science, Hefei, Anhui 230031, People’s Republic of China 2.University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China 3.University of California, Los Angeles, CA 90095, United States of America 4.Advanced Energy Research Center, Shenzhen University, Shenzhen 518060, People’s Republic of China 5.Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, People’s Republic of China 6.Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan 7.Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
推荐引用方式 GB/T 7714	Chu,Y Q,Liu,H Q,Zhang,S B,et al. Study of the mechanism of ITB formation and sustainment with optimized q profiles in ELMy H mode discharges on the EAST[J]. Plasma Physics and Controlled Fusion,2021,63.
APA	Chu,Y Q.,Liu,H Q.,Zhang,S B.,Jie,Y X.,Lian,H.,...&Zang,Q.(2021).Study of the mechanism of ITB formation and sustainment with optimized q profiles in ELMy H mode discharges on the EAST.Plasma Physics and Controlled Fusion,63.
MLA	Chu,Y Q,et al."Study of the mechanism of ITB formation and sustainment with optimized q profiles in ELMy H mode discharges on the EAST".Plasma Physics and Controlled Fusion 63(2021).