Compatibility of pronounced detachment with improved confinement on HL-2A tokamak

被引：0

作者：

Wu, Ting ^{[1
]}

Xu, Min ^{[1
]}

Wang, Zhuo ^{[1
]}

Nie, Lin ^{[1
]}

Wang, Zhanhui ^{[1
]}

Gao, Jinming ^{[1
]}

Chen, Yihang ^{[1
]}

Zhu, Yiren ^{[1
]}

Zhang, Yi ^{[1
]}

Liu, Liang ^{[1
]}

Li, Dong ^{[1
]}

Zhang, Kai ^{[1
]}

Ke, Rui ^{[1
]}

He, Xiaoxue ^{[1
]}

Yang, Zengceng ^{[1
]}

Yu, Xin ^{[1
]}

Wu, Na ^{[1
]}

Huang, Zhihui ^{[1
]}

Yi, Kaiyang ^{[1
]}

Wang, Weice ^{[1
]}

Yan, Longwen ^{[1
]}

Li, Yonggao ^{[1
]}

Long, Ting ^{[1
]}

Wang, Renxu ^{[2
]}

Tian, Wenjing ^{[1
]}

Wang, Zhe ^{[1
]}

Cai, Laizhong ^{[1
]}

Yu, Yi ^{[3
]}

机构：

[1] Southwestern Inst Phys, Chengdu 610041, Peoples R China

[2] Renmin Univ China, High Sch, Beijing 100086, Peoples R China

[3] Sun Yat Sen Univ, Sun Yat Sen Mem Hosp, Guangzhou, Peoples R China

来源：

NUCLEAR FUSION | 2025年 / 65卷 / 02期

基金：

中国国家自然科学基金;

关键词：

pronounced detachment; improved confinement; edge turbulent transport; RADIATIVE IMPROVED MODE; POWER EXHAUST; EDGE;

D O I：

10.1088/1741-4326/ad9e04

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

This paper investigates the compatibility of pronounced detachment with improved confinement based on the NBI-heated HL-2A L-mode plasma with low-density. Through impurity seeding, radiation becomes higher at plasma edge and causes edge cooling after pronounced detachment. Turbulent transport is examined in detail by experiments and global integrated simulations. Ion dominant turbulent transport decreases at normalized minor radius rho is an element of[0.1,0.4], and ion temperature increases at rho is an element of[0,0.8] . Edge turbulence and turbulent transport through ion channels decrease significantly, which could result from reduced free energy source due to edge cooling. The reduced edge turbulent transport benefits to decrease the power entering the SOL/divertor. The decreased edge outward transport and increased core electron density and ion temperature make major contributions to the improved plasma confinement after pronounced detachment.

引用

页数：17

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