Nuclear Fusion (Jan 2025)
Compatibility of pronounced detachment with improved confinement on HL-2A tokamak
- Ting Wu,
- Min Xu,
- Zhuo Wang,
- Lin Nie,
- Zhanhui Wang,
- Jinming Gao,
- Yihang Chen,
- Yiren Zhu,
- Yi Zhang,
- Liang Liu,
- Dong Li,
- Kai Zhang,
- Rui Ke,
- Xiaoxue He,
- Zengceng Yang,
- Xin Yu,
- Na Wu,
- Zhihui Huang,
- Kaiyang Yi,
- Weice Wang,
- Longwen Yan,
- Yonggao Li,
- Ting Long,
- Renxu Wang,
- Wenjing Tian,
- Zhe Wang,
- Laizhong Cai,
- Yi Yu
Affiliations
- Ting Wu
- ORCiD
- Southwestern Institute of Physics , Chengdu 610041, China
- Min Xu
- ORCiD
- Southwestern Institute of Physics , Chengdu 610041, China
- Zhuo Wang
- Southwestern Institute of Physics , Chengdu 610041, China
- Lin Nie
- Southwestern Institute of Physics , Chengdu 610041, China
- Zhanhui Wang
- Southwestern Institute of Physics , Chengdu 610041, China
- Jinming Gao
- ORCiD
- Southwestern Institute of Physics , Chengdu 610041, China
- Yihang Chen
- Southwestern Institute of Physics , Chengdu 610041, China
- Yiren Zhu
- Southwestern Institute of Physics , Chengdu 610041, China
- Yi Zhang
- ORCiD
- Southwestern Institute of Physics , Chengdu 610041, China
- Liang Liu
- Southwestern Institute of Physics , Chengdu 610041, China
- Dong Li
- ORCiD
- Southwestern Institute of Physics , Chengdu 610041, China
- Kai Zhang
- Southwestern Institute of Physics , Chengdu 610041, China
- Rui Ke
- ORCiD
- Southwestern Institute of Physics , Chengdu 610041, China
- Xiaoxue He
- ORCiD
- Southwestern Institute of Physics , Chengdu 610041, China
- Zengceng Yang
- Southwestern Institute of Physics , Chengdu 610041, China
- Xin Yu
- Southwestern Institute of Physics , Chengdu 610041, China
- Na Wu
- ORCiD
- Southwestern Institute of Physics , Chengdu 610041, China
- Zhihui Huang
- Southwestern Institute of Physics , Chengdu 610041, China
- Kaiyang Yi
- Southwestern Institute of Physics , Chengdu 610041, China
- Weice Wang
- Southwestern Institute of Physics , Chengdu 610041, China
- Longwen Yan
- Southwestern Institute of Physics , Chengdu 610041, China
- Yonggao Li
- Southwestern Institute of Physics , Chengdu 610041, China
- Ting Long
- ORCiD
- Southwestern Institute of Physics , Chengdu 610041, China
- Renxu Wang
- High School Affiliated to Renmin University of China , Beijing 100086, China
- Wenjing Tian
- ORCiD
- Southwestern Institute of Physics , Chengdu 610041, China
- Zhe Wang
- ORCiD
- Southwestern Institute of Physics , Chengdu 610041, China
- Laizhong Cai
- Southwestern Institute of Physics , Chengdu 610041, China
- Yi Yu
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University , Zhuhai 519082, China
- DOI
- https://doi.org/10.1088/1741-4326/ad9e04
- Journal volume & issue
-
Vol. 65,
no. 2
p. 026022
Abstract
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 $\rho \in \left[ {0.1,{ }0.4} \right],$ and ion temperature increases at $\rho \in \left[ {0,{ }0.8} \right]$ . 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.
Keywords
