SHU Yukun; WANG Zhanhui; XU Xinliang; WU Xueke; WANG Zhuo; WU Ting; ZHOU Yulin; FU Cailong; ZHONG Yijun; YU Xin; LI Yonggao; HE Xiaoxue; YANG Zengchen; Kunlun Integrated Simulation and Design Group

doi:10.7498/aps.74.20250087

Abstract

The divertor detachment and heat flux control under high-confinement H-mode conditions in tokamaks represent critical physical challenges in current magnetic confinement fusion research. Understanding the influence of detachment on H-mode boundary transport physics, particularly its compatibility with core confinement, is central to resolving divertor detachment physics. In this study, experimental results on divertor detachment and core confinement compatibility in H-mode plasma from the HL-2A tokamak are presented. On the objective magnetohydrodynamic framework for integrated tasks (OMFIT) integrated modeling platform, a novel neural network-based fast integrated modeling method for the divertor target region is developed by integrating a new edge neural network module (Kun-Lun Neural Networks, KLNN) to enhance divertor, scrape-off-layer and edge pedestal fast prediction capability. For the first time, this method is used to conduct integrated simulations of divertor detachment and core confinement compatibility in HL-2A discharge #39007 under high-confinement mode. The simulation results are validated with experimental measurements, demonstrating that they are well consistent. Further analysis reveals that in HL-2A H-mode detachment scenarios, turbulent transport in the core region ($ 0.1 < \rho \leqslant 0.5 $) with high poloidal wave numbers $ ({k}_{\theta }{\rho }_{{\mathrm{s}}} > 1 $) is dominated by ion temperature gradient (ITG) mode, while electron-driven turbulence prevails in the region $ (0.5 < \rho \leqslant 0.7) $. In the boundary region, electron turbulence dominates at low normalized poloidal wave numbers ($ {k}_{\theta }{\rho }_{{\mathrm{s}}} < 2 $), whereas ITG modes become predominant at higher wave numbers ($ {k}_{\theta }{\rho }_{{\mathrm{s}}} > 2 $), accompanied by minor electron turbulence contributions. The research results of this work provide a certain foundation for integrated simulation and experimental verification in the study of core-edge coupling physics in tokamak devices and some insights for understanding detachment-compatible H-mode scenarios in the next-step fusion devices.

Keywords:

Authors and contacts

SHU Yukun¹,
WANG Zhanhui¹,
XU Xinliang¹,
WU Xueke¹,
WANG Zhuo¹,
WU Ting¹,
ZHOU Yulin¹,
FU Cailong¹,
ZHONG Yijun²,
YU Xin¹,
LI Yonggao¹,
HE Xiaoxue¹,
YANG Zengchen¹,
Kunlun Integrated Simulation and Design Group¹

Corresponding author: WANG Zhanhui, zhwang@swip.ac.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 12375210), the National Magnetic Confinement Fusion Research Program of China (Grant No. 2022YFE03010004), and the Science and Technology Program of Sichuan Province, China (Grant No. 2022JDRC0014).

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[28]
[29]
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Cited By

DownLoad: Full-Size Img PowerPoint

物理量	实验值	模拟初始输入值
等离子体电流/kA	150	150
纵场强度/T	1.33	1.33
NBI功率/kW	600	600
ECRH功率/kW	850	850
LHCD功率/kW	450	450
欧姆电流占比	—	0.60
NBI驱动电流占比	—	0.13
自举电流占比	—	0.27
芯部离子温度/keV	0.51	0.52
芯部电子温度/keV	2.25	2.26
芯部电子密度/(10¹⁹ m^–3)	2.62	2.52
电子线平均密度/(10¹⁹ m^–3)	1.83	1.91
Greenwald密度极限比值	0.42	0.43
q₉₅	3.32	3.07
归一化比压	1.67	1.75

DownLoad: CSV

	储能/kJ	能量约束时间/ms	$ {H}_{98} $因子
脱靶前时间段 (1100—1180 ms)	29.2 ± 1.699	19.86 ±1.24	1.06 ± 0.069
脱靶后时间段 (1300—1380 ms)	27.8 ± 1.883	18.96 ± 1.25	1.02 ± 0.066
下降百分比/%	4.8	4.5	3.8

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