Simulations of fast component and slow component of SMBI on HL-2A tokamak

doi:10.1088/1674-1056/26/5/055201

中国物理B ›› 2017, Vol. 26 ›› Issue (5): 55201-055201.doi: 10.1088/1674-1056/26/5/055201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇下一篇

Simulations of fast component and slow component of SMBI on HL-2A tokamak

Yong-Fu Shi(史永福), Zhan-Hui Wang(王占辉), Qi-Long Ren(任启龙), Ai-Ping Sun(孙爱萍), De-Liang Yu(余德良), Wen-Feng Guo(郭文峰), Min Xu(许敏)

1 Southwestern Institute of Physics, Chengdu 610041, China;
2 Institute of Plasma Physics, Chinese Academy of sciences, Hefei 230031, China

收稿日期:2016-11-15 修回日期:2017-01-22 出版日期:2017-05-05 发布日期:2017-05-05
通讯作者: Zhan-Hui Wang, Qi-Long Ren E-mail:zhwang@swip.ac.cn;renql@ipp.ac.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11575055, 11375053, and 11472519), the Chinese National Fusion Project for ITER (Grant Nos. 2013GB111005, 2013GB107001, 2014GB108004, 2014GB110004, and 2015GB110001), and the International S&T Cooperation Program of China (Grant No. 2015DFA61760).

Simulations of fast component and slow component of SMBI on HL-2A tokamak

Yong-Fu Shi(史永福)¹, Zhan-Hui Wang(王占辉)¹, Qi-Long Ren(任启龙)², Ai-Ping Sun(孙爱萍)¹, De-Liang Yu(余德良)¹, Wen-Feng Guo(郭文峰)², Min Xu(许敏)¹

1 Southwestern Institute of Physics, Chengdu 610041, China;
2 Institute of Plasma Physics, Chinese Academy of sciences, Hefei 230031, China

Received:2016-11-15 Revised:2017-01-22 Online:2017-05-05 Published:2017-05-05
Contact: Zhan-Hui Wang, Qi-Long Ren E-mail:zhwang@swip.ac.cn;renql@ipp.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11575055, 11375053, and 11472519), the Chinese National Fusion Project for ITER (Grant Nos. 2013GB111005, 2013GB107001, 2014GB108004, 2014GB110004, and 2015GB110001), and the International S&T Cooperation Program of China (Grant No. 2015DFA61760).

摘要/Abstract

摘要： It is very important to improve the penetration depth and fueling efficiency of supersonic molecular beam injection (SMBI) especially for the next generation fusion devices such as ITER. Two components, a fast component (FC) and a slow component (SC), have been observed in the HL-2A SMBI experiments for several years, and the FC can penetrate much more deeply than the common SMBIs which draws a great deal of attention for a better fueling method. It is the first time to the FC and SC of SMBI have been simulated and interpreted in theory and simulation in this paper with the trans-neut module of the BOUT++ code. The simulation results of the FC and SC are clear and distinguishable in the same way as the observation in experiment. For the major mechanism of the FC and SC, it is found that although the difference in the injection velocity has some effect on the penetration depth difference between the FC and SC, it is mainly caused by the self-blocking effect of the first ionized SMB. We also discuss the influence of the initial plasma density on the FC and SC, and the variation of the SC penetration depth with its injection velocity.

关键词: supersonic molecular beam injection, fast component and slow component, penetration depth, self-blocking effect

Abstract: It is very important to improve the penetration depth and fueling efficiency of supersonic molecular beam injection (SMBI) especially for the next generation fusion devices such as ITER. Two components, a fast component (FC) and a slow component (SC), have been observed in the HL-2A SMBI experiments for several years, and the FC can penetrate much more deeply than the common SMBIs which draws a great deal of attention for a better fueling method. It is the first time to the FC and SC of SMBI have been simulated and interpreted in theory and simulation in this paper with the trans-neut module of the BOUT++ code. The simulation results of the FC and SC are clear and distinguishable in the same way as the observation in experiment. For the major mechanism of the FC and SC, it is found that although the difference in the injection velocity has some effect on the penetration depth difference between the FC and SC, it is mainly caused by the self-blocking effect of the first ionized SMB. We also discuss the influence of the initial plasma density on the FC and SC, and the variation of the SC penetration depth with its injection velocity.

Key words: supersonic molecular beam injection, fast component and slow component, penetration depth, self-blocking effect

中图分类号: (Transport properties)

52.25.Fi

52.25.Ya (Neutrals in plasmas)

史永福, 王占辉, 任启龙, 孙爱萍, 余德良, 郭文峰, 许敏. Simulations of fast component and slow component of SMBI on HL-2A tokamak[J]. 中国物理B, 2017, 26(5): 55201-055201.

Yong-Fu Shi(史永福), Zhan-Hui Wang(王占辉), Qi-Long Ren(任启龙), Ai-Ping Sun(孙爱萍), De-Liang Yu(余德良), Wen-Feng Guo(郭文峰), Min Xu(许敏). Simulations of fast component and slow component of SMBI on HL-2A tokamak[J]. Chin. Phys. B, 2017, 26(5): 55201-055201.

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Simulations of fast component and slow component of SMBI on HL-2A tokamak

Simulations of fast component and slow component of SMBI on HL-2A tokamak

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