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

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

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.

Keywords: supersonic molecular beam injection fast component and slow component penetration depth self-blocking effect

Received: 15 November 2016
Revised: 22 January 2017
Accepted manuscript online:

PACS:	52.25.Fi	(Transport properties)
	52.25.Ya	(Neutrals in plasmas)

Fund: 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).

Corresponding Authors: Zhan-Hui Wang, Qi-Long Ren
E-mail: zhwang@swip.ac.cn;renql@ipp.ac.cn

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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 2017 Chin. Phys. B 26 055201

[1]	Baylor L R, Jernigan T C, Combs S K, Houlberg W A, Murakami M, Gohil P, Burrell K H, Greenfield C M, Groebner R J, Hsieh C L, La Haye R J, Parks P B, Staebler G M, Staebler G M, DIII-D term, Schmidt G L, Ernst D R, Synakowski E J and Porkolab M 2000 Phys.Plasmas 7 1878
[2]	Sajjad S, Gao X, Ling B, Bhatti S H and Ang T 2009 Phys. Lett. A 373 1133
[3]	YAO L H, Zhao D W, Feng B B, Chen C Y, Zhou Y, Han X Y, Li Y G, Jerome B and Duan X R 2010 Plasma Sci. Technol. 12 529
[4]	Yu D L, Chen C Y, Yao L H, Dong J Q, Feng B B, Zhou Y, Shi Z B, Zhou J, Han X Y, Zhong W L, Cui C H, Huang Y, Cao Z, Liu Yi, Yan L W, Yang Q W, Duan X R and Liu Yong 2012 Nucl. Fusion 52 082001
[5]	Yao L H, Feng B B, Chen C Y, Shi Z B, Yuan B S, Zhou Y, Duan X R, Sun H J, Lu J, Jiao Y M, Ni G Q, Lu H Y, Xiao W W, Li W, Pan Y D, Hong W Y, Ran H, Ding X T and Liu Y 2007 Nucl. Fusion 47 1399
[6]	Guirlet R, Villegas D, Parisot T, Bourdelle C, Garbet X, Imbeaux F, Mazon D and Pacella D 2009 Nucl. Fusion 49 055007
[7]	Cui X W, Cui Z Y, Feng B B, Pan Y D, Zhou H Y, Sun P, Fu B Z, Lu P, Dong Y B, Gao J M, Song S D and Yang Q W 2013 Chin. Phys. B 22 125201
[8]	Zhou H Y, Cui Z Y, Morita S, Fu B Z, Goto M, Sun P, Feng B B, Cui X W, Lu P and Yang Q W 2014 Plasma Sci. Technol. 16 89
[9]	Xiao W W, Zou X L, Ding X T, Yao L H, Feng B B, Song X M, Song S D, Zhou Y, Liu Z T, Yuan B S, Sun H J, Ji X Q, Gao Y D, Li Y G, Yan L W, Yang Q W, Liu Yi, Dong J Q, Duan X R, Liu Y and Pan C H 2010 Phys. Rev. Lett. 104 215001
[10]	Duan X R, Dong J Q, Yan L W, et al. 2010 Nucl. Fusion 50 095011
[11]	Miki K, Diamond P H, Hahn S H, Xiao W W, Gürcan Ö D and Tynan G R 2013 Phys. Rev. Lett. 110 195002
[12]	Xiao W W, Diamond P H, Zou X L, et al. 2012 Nucl. Fusion 52 114027
[13]	Xiao W W, Diamond P H, Kim W C, et al. 2014 Nucl. Fusion 54 023003
[14]	Rhee T, Kwon J M, Diamond P H and Xiao W W 2012 Phys. Plasmas 19 022505
[15]	Kim J, Jeon Y M, Xiao W W, Yoon S W, Park J K, Yun G S, Ahn J W, Kim H S, Yang H L and Kim H K 2012 Nucl. Fusion 52 114011
[16]	Kwak J G, Oh Y K, Yang H L, et al. 2013 Nucl. Fusion 53 104005
[17]	Lee H Y, Hahn S H, Ghim Y C, Bak J G, Lee J H, Ko W H, Lee K D, Lee S H, Lee H H, Juhn J W, Kim H S, Yoon S W, Han H, Hong J H, Jang J H, Park J S and Choe W 2015 Phys. Plasmas 22 122512
[18]	Yang Z C, Shi Z B, Zhong W L, Zhang B Y, Fan Q C, Li H D, Jiang M, Shi P W, Chen C Y, Chen W, Liu Z T, Yu D L, Zhou Y, Feng B B, Song X M, Ding X T, Yang Q W, Duan X R and HL-2A Team 2016 Phys. Plasmas 23 012515
[19]	Sun H J, Ding X T, Yao L H, Feng B B, Liu Z T, Duan X R and Yang Q W 2010 Plasma Phys. Control. Fusion 52 045003
[20]	Sun H J, Diamond P H, Shi Z B, Chen C Y, Yao L H, Ding X T, Feng B B, Huang X L, Zhou Y, Zhou J, Song X M and the HL-2A team 2011 Nucl. Fusion 51 113010
[21]	Pan O, Xu Y, Hidalgo C, Zhong W L, Shi Z B, Ji X Q, Jiang M, Feng B B, Zhou Y, Cheng J, Liu Y, Xu M, Chen W, Ding X T, Yan L W, Yang Q W, Duan X R, Liu Y and the HL-2A team 2015 Nucl. Fusion 55 113010
[22]	Ida K, Shi Z, Sun H J, et al. 2015 Nucl. Fusion 55 013022
[23]	Yu D L, Chen C Y, Yao L H, Feng B B, Han X Y, Yang L M, Zhong W L, Zhou Y, Zhao K J, Huang Y, Liu Y, Yan L W, Yang Q W, Dong J Q and Duan X R 2010 Nucl. Fusion 50 035009
[24]	Yao L H, Zhao D W, Feng B B, Chen C Y, Zhou Y, Han X Y, Li Y G, Jerome B and Duan X R 2010 Plasma Sci. Technol. 12 529
[25]	Shi Z B, Ding X T, Yao L H, Liu Z T, Chen Ch Y, Yang Q W, Feng B B, Zhou Y, Yan L W, Liu Y and Liu Y 2005 Plasma Phys. Control. Fusion 47 2019
[26]	Dong J F, Tang N Y, Li W, Luo J L, Liu Y, Xiao Z G, Yao L H, Feng B B, Li B and Qin Y W 2002 Plasma Phys. Control. Fusion 44 371
[27]	Yao L H, Dong J F, Zhou Y, Feng B B, Cao J Y, Li W, Feng Z, Zhang J Q, Hong W Y, Cui Z Y, Wang E Y and Liu Y 2004 Nucl. Fusion 44 420
[28]	Takenaga H and the JT-60 Team 2009 J. Nucl. Mater. 390-391 869
[29]	Takenaga H, Miyo Y, Bucalossi J, Marty V, Urano H, Asakura N, Nishiyama T, Sasajima T, Masaki K and Kaminaga A 2010 Nucl. Fusion 50 115003
[30]	Dudson B D, Umansky M V, Xu X Q, Snyder P B and Wilson H R 2010 Comput. Phys. Commun. 180 1467
[31]	Wang Z H, Xu X Q, Xia T Y and Rognlien T D 2014 Nucl. Fusion 54 043019
[32]	Wang Z H, Xu X Q, Xia T Y, Yu D L, Zheng G Y, Huang J, Chen S Y, Zhong W L, Shi Z B, Sun A P, Dong J Q, Xu M, Sun T T and Yao L H 2014 25th IAEA Fusion Energy Conference TH/P7-30
[33]	Zhou Y L, Wang Z H, Xu X Q, Li H D, Feng H and Sun W G 2015 Phys. Plasmas 22 012503
[34]	Zhou Y L, Wang Z H, Xu X Y, Li H, Feng H H and Sun W G 2016 Chin. Phys. B 25 095201
[35]	Wang Y H, Guo W F, Wang Z H, Ren Q L, Sun A P, Xu M, Wang A K and Xiang N 2016 Chin. Phys. B 25 106601
[36]	Summers H P 2000 The ADAS User Manual (version 2.2) http://adas.phys.strath.ac.uk
[37]	Braginskii S.I. 1965 Reviews of Plasma Physics Vol. 1 (Leontovich M A, Ed.) (New York: Consultants Bureau) p. 205

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

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