LUO Yuchen; SANG Chaofeng; WANG Yilin; WU Yihan; ZHOU Qingrui; LI Jiaxian; XUE Miao; XUE Lei; ZHENG Guoyao; DU Hailong; WANG Dezhen

doi:10.7498/aps.74.20250384

Abstract

Controlling of tungsten (W) impurity core accumulation is of great significance for the steady-state operation of tokamaks. This work mainly investigates the effect of neoclassical transport on the core accumulation of W impurities by using STRAHL code. The study focuses on the HL-3 device, which will use tungsten divertor and conduct research under argon gas injection discharge conditions. In the simulation, the edge and core background plasma parameters are obtained by SOLPS-ITER and OMFIT simulations, respectively. The distribution of tungsten impurities in the boundary region is simulated using the IMPEDGE code. The edge anomalous transport coefficient in STRAHL is adjusted accordingly, and the simulation results are compared with those from the IMPEDGE to ensure consistency in impurity distribution between the core and edge. In the core region, a numerical scan is performed to adjust the simulation results so that the energy radiation matches the setting values, thereby determining the specific turbulence convection velocity. By setting the coefficients for both the core region and the boundary region, a complete distribution of W impurities from boundary to the core is obtained. To account for the neoclassical transport effects, the neoclassical transport coefficients are calculated using the subroutine NEOART and applied to the impurity transport simulation, and the simulation region is set from $ \rho =0 $ to 0.9. On this basis, the transport of W impurities with and without neoclassical convection is simulated. The simulation results show that without neoclassical convection, anomalous transport dominates the impurity transport, which is inward and enhances impurity accumulation in the core, and the core impurity density reaches $ 1.1\times {10}^{16}\;{{\mathrm{m}}}^{-3} $. After introducing neoclassical convection which is outward, it can offset the inward anomalous convection and significantly reduces the W impurity density in the core, thereby significantly reducing the core tungsten impurity density to $ 4.0\times {10}^{15}\;{{\mathrm{m}}}^{-3} $. In addition, the neoclassical convection in the region of $ \rho$ = 0.72–0.90 plays a more important role in reducing the core impurity density. Further analysis of the components of neoclassical convection shows that the Pfirsche-Schlüter (PS) component dominates the neoclassical convection term, which is mainly driven by the ion temperature gradient term. Therefore, experimentally, plasma heating can be used to enhance the temperature gradient and suppress impurity core accumulation.

Keywords:

Authors and contacts

Corresponding author: SANG Chaofeng, sang@dlut.edu.cn

Funds: Project supported by the National Magnetic Confinement Fusion Energy Program (Grant No. 2024YFE03160001), the National Natural Science Foundation of China (Grant Nos. 12235002, 12261131496), the Science & Technology Talents of Dalian, China (Grant No. 2022RJ11), and the Revitalization Talents Program of Liaoning Province, China (Grant No. XLYC2203182).

FullText HTML

References

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]
[37]
[38]
[39]
[40]
[41]
[42]

Cited By

DownLoad: Full-Size Img PowerPoint

使用区域	W/O NEO	With NEO $ \rho $= 0.72—0.90	With NEO $ \rho $= 0—0.9
$ {n}_{{\mathrm{w}}}^{\rho =0.72} $(10¹⁵ m^–3)	$ 6.00 $	$ 3.80 $	$ 3.80 $
$ {n}_{{\mathrm{w}}}^{\rho =0} $(10¹⁶ m^–3)	$ 1.10 $	$ 0.58 $	$ 0.40 $
$ {C}_{{\mathrm{w}}}^{\rho =0} $(10^–5)	7.70	4.20	2.50
$ {P}_{{\mathrm{r}}{\mathrm{a}}{\mathrm{d}}}^{\rho =0} $(MW·m^–3)	0.26	0.15	0.11

DownLoad: CSV

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]
[37]
[38]
[39]
[40]
[41]
[42]

[1]	Sun You-Wen, Qiu Zhi-Yong, Wan Bao-Nian. Current status and prospects of burning plasma physics in magnetically confined fusion. Acta Physica Sinica, 2024, 73(17): 175202. doi: 10.7498/aps.73.20240831
[2]	Wang Fu-Qiong, Xu Ying-Feng, Zha Xue-Jun, Zhong Fang-Chuan. Multi-fluid and dynamic simulation of tungsten impurity in tokamak boundary plasma. Acta Physica Sinica, 2023, 72(21): 215213. doi: 10.7498/aps.72.20230991
[3]	Hao Bao-Long, Li Ying-Ying, Chen Wei, Hao Guang-Zhou, Gu Xiang, Sun Tian-Tian, Wang Yu-Min, Dong Jia-Qi, Yuan Bao-Shan, Peng Yuan-Kai, Shi Yue-Jiang, Xie Hua-Sheng, Liu Min-Sheng, ENN TEAM. Optimizing numerical simulation of beam ion loss due to toroidal field ripple on EXL-50U spherical torus. Acta Physica Sinica, 2023, 72(21): 215215. doi: 10.7498/aps.72.20230749
[4]	Luo Yi-Ming, Wang Zhan-Hui, Chen Jia-Le, Wu Xue-Ke, Fu Cai-Long, He Xiao-Xue, Liu Liang, Yang Zeng-Chen, Li Yong-Gao, Gao Jin-Ming, Du Hua-Rong, Kulun Integrated Simulation and Design Group. Transport analysis of NBI heating H-mode experiment on HL-2 A with integrated modeling. Acta Physica Sinica, 2022, 71(7): 075201. doi: 10.7498/aps.71.20211941
[5]	Zou Xiong, Qi Xiao-Bo, Zhang Tao-Xian, Gao Zhang-Fan, Huang Wei-Xing. Numerical simulation of filling and evacuating process of impurity gas in target capsule of inertial confinement fusion. Acta Physica Sinica, 2021, 70(7): 075207. doi: 10.7498/aps.70.20201491
[6]	Hao Bao-Long, Chen Wei, Li Guo-Qiang, Wang Xiao-Jing, Wang Zhao-Liang, Wu Bin, Zang Qing, Jie Yin-Xian, Lin Xiao-Dong, Gao Xiang, CFETR TEAM. Numerical simulation of synergistic effect of neoclassical tearing mode and toroidal field ripple on alpha particle loss in China Fusion Engineering Testing Reactor. Acta Physica Sinica, 2021, 70(11): 115201. doi: 10.7498/aps.70.20201972
[7]	Tang Xiong-Xin, Qiu Ji-Si, Fan Zhong-Wei, Wang Hao-Cheng, Liu Yue-Liang, Liu Hao, Su Liang-Bi. Experimental study of diode-pumped Nd, Y:CaF2 amplifier for inertial confinement fusion laser driver. Acta Physica Sinica, 2016, 65(20): 204206. doi: 10.7498/aps.65.204206
[8]	Li Zhen-Wu. Kondo effect on the electrical transport properties of carbon nanotubes. Acta Physica Sinica, 2013, 62(9): 096101. doi: 10.7498/aps.62.096101
[9]	Zhang Zhan-Wen, Qi Xiao-Bo, Li Bo. Properties and fabrication status of capsules for ignition targets in inertial confinement fusion experiments. Acta Physica Sinica, 2012, 61(14): 145204. doi: 10.7498/aps.61.145204
[10]	Chen Da-Peng, Zeng Zhi, Zhang Cun-Lin, Jin Xue-Yuan, Zhang Zheng. Infrared thermal wave imaging for inspecting the insulation layer of superconducting busbar in thermonuclear experimental reactor. Acta Physica Sinica, 2012, 61(9): 094207. doi: 10.7498/aps.61.094207
[11]	Yan Ji, Jiang Shao-En, Su Ming, Wu Shun-Chao, Lin Zhi-Wei. The application of phase contrast imaging to ICF multi-shell capsule diagnosis. Acta Physica Sinica, 2012, 61(6): 068703. doi: 10.7498/aps.61.068703
[12]	Yu Bo, Ying Yang-Jun, Xu Hai-Bo. Optimization of diagnostic system for neutron penumbral imaging in inertial confinement fusion. Acta Physica Sinica, 2010, 59(6): 4100-4109. doi: 10.7498/aps.59.4100
[13]	Liu Jin-Yuan, Chen Long, Wang Feng, Wang Nan, Duan Ping. Characteristics of charging, motion and temperature of dust particulates in magnetic fusion devices. Acta Physica Sinica, 2010, 59(12): 8692-8700. doi: 10.7498/aps.59.8692
[14]	Shi Chun-Hua, Qiu Xi-Jun, An Wei-Ke, Li Ru-Xin. Influence of intense pulse laser on penetron-atomic ionization in muon-catalysed fusion. Acta Physica Sinica, 2005, 54(9): 4087-4091. doi: 10.7498/aps.54.4087
[15]	An Wei-Ke, Qiu Xi-Jun, Zhu Zhi-Yuan. Theoretical study on the nuclear fusion mechanism of deuterium clusters aroused by Coulomb explosions with femtosecond intense laser. Acta Physica Sinica, 2004, 53(7): 2250-2253. doi: 10.7498/aps.53.2250
[16]	WANG TIE-SHAN, KENTARO OCHIAI, KATHUHIKO MARUTA, TOSHIYUKI IIDA, AKITO TAKAHASHI. NUCLEAR CLUSTER EFFECT IN THE INTERACTION OF DEUTERIUM CLUSTER ION (d+3) AND SOLID (PdDx). Acta Physica Sinica, 1998, 47(12): 1957-1962. doi: 10.7498/aps.47.1957
[17]	LI JUN, XU QIANG-HUA, CHEN QING-MING. ELECTRON ENERGY DISTRIBUTIONS AND TRANSPORT COEFFICIENTS FOR MAGNETICALLY CONFINED GAS LASERS. Acta Physica Sinica, 1994, 43(1): 30-36. doi: 10.7498/aps.43.30
[18]	ZHOU HAI-LIN. NEOCLASSICAL TRANSPORT THEORY OF A MULTICOMPONENT PLASMA. Acta Physica Sinica, 1984, 33(3): 309-320. doi: 10.7498/aps.33.309
[19]	XU ZHI-ZHAN, ZHANG WEN-QI, PAN ZHONG-XIONG, WANG YI-FEI. ONE-DIMENSIONAL THREE-TEMPERATURE CALCULATIONS FOR LASER FUSION. Acta Physica Sinica, 1982, 31(9): 1267-1273. doi: 10.7498/aps.31.1267
[20]	Lin Zhong-heng;Yin Guang-yu. LASER FUSION SIMULATION. Acta Physica Sinica, 1979, 28(4): 455-469. doi: 10.7498/aps.28.455

Catalog

Vol. 74, Issue 13 - 2025-07-05

Metrics

Abstract views: 1757
PDF Downloads: 86
Cited By: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

Search

Article

留言板

Abstract

Authors and contacts

Corresponding author: SANG Chaofeng, sang@dlut.edu.cn

FullText HTML

References

Cited By

Catalog

Metrics

Authors

Referees

About Journal

About

Search

Article

留言板

Abstract

Authors and contacts

Corresponding author: SANG Chaofeng, sang@dlut.edu.cn

FullText HTML

References

Cited By

Catalog

Metrics

Publishing process

Authors

Referees

About Journal

About