Characterization of plasma current quench during disruption in EAST tokamak

doi:10.1088/1674-1056/24/2/025205

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

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Characterization of plasma current quench during disruption in EAST tokamak

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