Please wait a minute...
Chin. Phys. B, 2015, Vol. 24(2): 025205    DOI: 10.1088/1674-1056/24/2/025205
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES Prev   Next  

Characterization of plasma current quench during disruption in EAST tokamak

Chen Da-Long (陈大龙)a, Granetz Robertc, Shen Biao (沈飙)a, Yang Fei (杨飞)a, Qian Jin-Ping (钱金平)a, Xiao Bing-Jia (肖炳甲)a b
a Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China;
b School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230031, China;
c MIT Plasma Science and Fusion Center, Cambridge, MA 02139, USA
Abstract  A preliminary analysis of plasma current quenching is presented in this paper based on the disruption database. It demonstrates that 26.8% of discharges have been disrupted in the last 2012 campaign, in addition, the plasma disruptive rate grows with the increase of plasma current. The best-fit linear and instantaneous plasma current quench rate is extracted from the recent EAST disruptions, showing that an 80%-30% interval of the maximum plasma current is well fit for the EAST device. The lowest area-normalized current quench time is 3.33 ms/m2 with the estimated plasma electron temperature being 7.3 eV~9.5 eV. In the disruption case the maximum eddy current goes up to 400 kA, and a fraction of currents are respectively driven on the upper and lower outer plate with nearly 100 MPa-200 MPa stress in the leg.
Keywords:  EAST      linear fit      area-normalized quench time      eddy current  
Received:  24 July 2014      Revised:  18 August 2014      Accepted manuscript online: 
PACS:  52.55.Fa (Tokamaks, spherical tokamaks)  
  52.35.Qz (Microinstabilities (ion-acoustic, two-stream, loss-cone, beam-plasma, drift, ion- or electron-cyclotron, etc.))  
  52.65.Kj (Magnetohydrodynamic and fluid equation)  
Fund: Project supported by the National Magnetic Confinement Fusion Science Program of China (Grant Nos. 2014GB103000 and 2013GB102000) and the National Natural Science Foundation of China (Grant No. 11205199 and 11205192).
Corresponding Authors:  Qian Jin-Ping     E-mail:  jpqian@ipp.ac.cn

Cite this article: 

Chen Da-Long (陈大龙), Granetz Robert, Shen Biao (沈飙), Yang Fei (杨飞), Qian Jin-Ping (钱金平), Xiao Bing-Jia (肖炳甲) Characterization of plasma current quench during disruption in EAST tokamak 2015 Chin. Phys. B 24 025205

[1] ITER Physics Expert Group on Disruptions, Plasma Control, and MHD and ITER Physics Basis Editors 1999 Nuclear Fusion 39 2321
[2] Hender T C and ITPA MHD, Disruption and Magnetic Control Topical Group 1997 Nuclear Fusion 47 S163
[3] Riccardo V, Barabaschi P and Sugihara M 2005 Plasma Physics and Controlled Fusion 47 117
[4] Wan Y X, Li J G and Weng Peide 2006 Proc. 21st IAEA Fusion Energy Conference, Chengdu, China
[5] Sugihara M et al. 2004 Proc. 21th IAEA Fusion Energy Conference, Chengdu, China
[6] Wesley J C et al. 2006 Proc. 21th IAEA Fusion Energy Conference, Chengdu, China
[7] Gerhardt S P, Menard J E and the NSTX Team 2009 Nucl. Fusion 49 025005
[8] Wan B N 2013 Nucl. Fusion 53 104006
[9] Qian J P, Wan B N and Shen B 2009 Chin. Phys. B 18 1172
[10] Liu G J, Wan B N, Qian J P, Sun Y W, Xiao B J, Shen B, Luo Z P, Ji X and Chen S L 2012 Chin. Phys. B 21 085201
[11] Liu G J, Wan B N, Sun Y W, Xiao B J and Wang Y 2013 Rev. Sci. Instrum. 84 073502
[12] Wu B, Wang J F, Li J B, Wang J and Hu C D 2011 Fusion Engineering and Design 86 947
[13] Granetz R S, Hutchinson I H, Sorci J, Irby J H, Labombard B and Gwinn D 1996 Nucl. Fusion 36 545
[14] Zhang Y, Chen Z Y, Fang D, Jin W, Huang Y H, Wang Z J, Yang Z J, Chen Z P, Ding Y H, Zhang M and Zhuang G 2012 Phys. Scr. 86 025501
[15] Liu G J, Wan B N, Sun Y W, Liu Y Q, Guo W F, Hao G Z, Ding S Y, Shen B, Xiao B J and Qian J P 2014 Chin. Phys. B 23 075205
[16] Shibata Y, Watanabe K Y, Okamoto M and Ohno N 2010 Nucl. Fusion 50 025015
[17] Spitzer L and Harm R 1953 Phys. Rev. 89 977
[18] Hilton F L and Hazeltine R D 1976 Rev. Mod. Phys. 48 239
[19] Chen D L, Shen B, Qian J P, Sun Y W, Liu G J, Shi T H, Zhuang H D and Xiao B J 2014 Chin. Phys. B 23 065205
[20] Wang H, Wang A K, Yang Q W, Ding X T, Dong J Q, Sanuki H B and Itoh K B 2007 Chin. Phys. 16 3738
[21] Zheng Y Z, Qiu Y, Zhang P, Huang Y, Cui Z Y, Sun P and Yang Q W 2009 Chin. Phys. B 18 5406
[1] Modeling of beam ions loss and slowing down with Coulomb collisions in EAST
Yifeng Zheng(郑艺峰), Jianyuan Xiao(肖建元), Baolong Hao(郝保龙), Liqing Xu(徐立清), Yanpeng Wang(王彦鹏), Jiangshan Zheng(郑江山), and Ge Zhuang(庄革). Chin. Phys. B, 2022, 31(7): 075201.
[2] Numerical simulation of fueling pellet ablation and transport in the EAST H-mode discharge
Wan-Ting Chen(陈婉婷), Ji-Zhong Sun(孙继忠), Fang Gao(高放), Lei Peng(彭磊), and De-Zhen Wang(王德真). Chin. Phys. B, 2022, 31(7): 075204.
[3] Study on divertor plasma behavior through sweeping strike point in new lower divertor on EAST
Yu-Qiang Tao(陶余强), Guo-Sheng Xu(徐国盛), Ling-Yi Meng(孟令义), Rui-Rong Liang(梁瑞荣), Lin Yu(余林), Xiang Liu(刘祥), Ning Yan(颜宁), Qing-Quan Yang(杨清泉), Xin Lin(林新), and Liang Wang(王亮). Chin. Phys. B, 2022, 31(6): 065204.
[4] Experimental investigation on divertor tungsten sputtering with neon seeding in ELMy H-mode plasma in EAST tokamak
Dawei Ye(叶大为), Fang Ding(丁芳), Kedong Li(李克栋), Zhenhua Hu(胡振华), Ling Zhang(张凌), Xiahua Chen(陈夏华), Qing Zhang(张青), Pingan Zhao(赵平安), Tao He(贺涛), Lingyi Meng(孟令义), Kaixuan Ye(叶凯萱), Fubin Zhong(钟富彬), Yanmin Duan(段艳敏), Rui Ding(丁锐), Liang Wang(王亮), Guosheng Xu(徐国盛), Guangnan Luo(罗广南), and EAST team. Chin. Phys. B, 2022, 31(6): 065201.
[5] Quantum partial least squares regression algorithm for multiple correlation problem
Yan-Yan Hou(侯艳艳), Jian Li(李剑), Xiu-Bo Chen(陈秀波), and Yuan Tian(田源). Chin. Phys. B, 2022, 31(3): 030304.
[6] Beam alignments based on the spectrum decomposition of orbital angular momentums for acoustic-vortex communications
Gepu Guo(郭各朴), Xinjia Li(李昕珈), Qingdong Wang(王青东), Yuzhi Li(李禹志), Qingyu Ma(马青玉), Juan Tu(屠娟), and Dong Zhang(章东). Chin. Phys. B, 2022, 31(12): 124302.
[7] Evolution of the high-field-side radiation belts during the neon seeding plasma discharge in EAST tokamak
Ji-Chan Xu(许吉禅), Liang Wang(王亮), Guo-Sheng Xu(徐国盛), Yan-Min Duan(段艳敏), Ling-Yi Meng(孟令义), Ke-Dong Li(李克栋), Fang Ding(丁芳), Rui-Rong Liang(梁瑞荣), Jian-Bin Liu(刘建斌), and EAST Team. Chin. Phys. B, 2022, 31(10): 105203.
[8] Reduction of impurity confinement time by combined heating of LHW and ECRH in EAST
Zong Xu(许棕), Zhen-Wei Wu(吴振伟), Ling Zhang(张凌), Yue-Heng Huang(黄跃恒), Wei Gao(高伟), Yun-Xin Cheng(程云鑫), Xiao-Dong Lin(林晓东), Xiang Gao(高翔), Ying-Jie Chen(陈颖杰), Lei Li(黎嫘), Yin-Xian Jie(揭银先), Qing Zang(臧庆), Hai-Qing Liu(刘海庆), and EAST team. Chin. Phys. B, 2021, 30(7): 075205.
[9] A meshless algorithm with the improved moving least square approximation for nonlinear improved Boussinesq equation
Yu Tan(谭渝) and Xiao-Lin Li(李小林). Chin. Phys. B, 2021, 30(1): 010201.
[10] Tests of the real-time vertical growth rate calculation on EAST
Na-Na Bao(鲍娜娜), Yao Huang(黄耀), Jayson Barr, Zheng-Ping Luo(罗正平), Yue-Hang Wang(汪悦航), Shu-Liang Chen(陈树亮), Bing-Jia Xiao(肖炳甲), David Humphreys. Chin. Phys. B, 2020, 29(6): 065204.
[11] Measurement of molybdenum ion density for L-mode and H-mode plasma discharges in the EAST tokamak
Yongcai Shen(沈永才), Hongming Zhang(张洪明), Bo Lyu(吕波), Yingying Li(李颖颖), Jia Fu(符佳), Fudi Wang(王福地), Qing Zang(臧庆), Baonian Wan(万宝年), Pan Pan(潘盼), Minyou Ye(叶民友). Chin. Phys. B, 2020, 29(6): 065206.
[12] Plasma shape optimization for EAST tokamak using orthogonal method
Yuan-Yang Chen(陈远洋), Xiao-Hua Bao(鲍晓华), Peng Fu(傅鹏), Ge Gao(高格). Chin. Phys. B, 2019, 28(1): 015201.
[13] Analytical model of tilted driver-pickup coils for eddy current nondestructive evaluation
Bing-Hua Cao(曹丙花), Chao Li(李超), Meng-Bao Fan(范孟豹), Bo Ye(叶波), Gui-Yun Tian(田贵云). Chin. Phys. B, 2018, 27(3): 030301.
[14] Performance study of aluminum shielded room for ultra-low-field magnetic resonance imaging based on SQUID: Simulations and experiments
Bo Li(李波), Hui Dong(董慧), Xiao-Lei Huang(黄小磊), Yang Qiu(邱阳), Quan Tao(陶泉), Jian-Ming Zhu(朱建明). Chin. Phys. B, 2018, 27(2): 020701.
[15] Novel quantum watermarking algorithm based on improved least significant qubit modification for quantum audio
Zhi-Guo Qu(瞿治国), Huang-Xing He(何煌兴), Tao Li(李涛). Chin. Phys. B, 2018, 27(1): 010306.
No Suggested Reading articles found!