Controllability study of EAST plasma vertical instability and improvement in future

作者: L. Liu , B.J. Xiao , D.A. Humphreys , Z.P. Luo , S.L. Chen

DOI: 10.1016/J.FUSENGDES.2014.02.069

关键词: PlasmaElectromagnetic coilPower (physics)UpgradeVertical controlControllabilityGeologyVertical displacementInstabilityStructural engineering

摘要: Abstract In order to enhance control speed, each up/down Cu passive plate in EAST is cut into 8 pieces. These discontinuous segments are still connected the inner vacuum vessel by steel supporting legs. A model of this segments-vessel-supporting leg loop developed and verified vertical displacement event (VDE) experiments. The internal coil (IC) power supply requirements for VDE also evaluated. particularly, we investigate efficacy location minimize capability. IC upgrade optimized actual discussed. experiments evaluate maximum controllable (dZmax) were done with varying elongation resulting controllability estimates summarized here. experimental results previous simulation that present capacity cannot provide robust control.

参考文章(10)
Guang-Jun Liu, Bao-Nian Wan, Jin-Ping Qian, You-Wen Sun, Bing-Jia Xiao, Biao Shen, Zheng-Ping Luo, Xiang Ji, Shu-Liang Chen, Effect of passive plates on vertical instability in the EAST tokamak Chinese Physics B. ,vol. 21, pp. 085201- ,(2012) , 10.1088/1674-1056/21/8/085201
E.A. Lazarus, J.B. Lister, G.H. Neilson, Control of the Vertical Instability in Tokamaks Nuclear Fusion. ,vol. 30, pp. 111- 141 ,(1990) , 10.1088/0029-5515/30/1/010
Liu Lei, Xiao Bingjia, Luo Zhengping, Simulation of the Growth Rate of Vertical Displacement Events and the Requirement of Active Feedback Power Supply in EAST Plasma Science & Technology. ,vol. 11, pp. 28- 32 ,(2009) , 10.1088/1009-0630/11/1/06
D.A Humphreys, J.R Ferron, M Bakhtiari, J.A Blair, Y In, G.L Jackson, H Jhang, R.D Johnson, J.S Kim, R.J LaHaye, J.A Leuer, B.G Penaflor, E Schuster, M.L Walker, H Wang, A.S Welander, D.G Whyte, Development of ITER-relevant plasma control solutions at DIII-D Nuclear Fusion. ,vol. 47, pp. 943- 951 ,(2007) , 10.1088/0029-5515/47/8/028
F Hofmann, M.J Dutch, A Favre, Y Martin, J.-M Moret, D.J Ward, Feedback stabilization of axisymmetric modes in the TCV tokamak using active coils inside and outside the vacuum vessel Nuclear Fusion. ,vol. 38, pp. 399- 408 ,(1998) , 10.1088/0029-5515/38/3/306
S.C. Jardin, D.A. Larrabee, Feedback stabilization of rigid axisymmetric modes in tokamaks Nuclear Fusion. ,vol. 22, pp. 1095- 1098 ,(1982) , 10.1088/0029-5515/22/8/011
D.A. Humphreys, T.A. Casper, N. Eidietis, M. Ferrara, D.A. Gates, I.H. Hutchinson, G.L. Jackson, E. Kolemen, J.A. Leuer, J. Lister, L.L. LoDestro, W.H. Meyer, L.D. Pearlstein, A. Portone, F. Sartori, M.L. Walker, A.S. Welander, S.M. Wolfe, Experimental vertical stability studies for ITER performance and design guidance Nuclear Fusion. ,vol. 49, pp. 115003- ,(2009) , 10.1088/0029-5515/49/11/115003
J-Y Favez, J B Lister, Ph Müllhaupt, B Srinivasan, Improving tokamak vertical position control in the presence of power supply voltage saturation Plasma Physics and Controlled Fusion. ,vol. 47, pp. 1709- 1741 ,(2005) , 10.1088/0741-3335/47/10/008
J.B. Lister, A. Sharma, D.J.N. Limebeer, Y. Nakamura, J.P. Wainwright, R. Yoshino, Plasma equilibrium response modelling and validation on JT-60U Nuclear Fusion. ,vol. 42, pp. 708- 724 ,(2002) , 10.1088/0029-5515/42/6/309
J. A. Leuer, M. L. Walker, D. A. Humphreys, Minimal Plasma Response Models for Design of Tokamak Equilibrium Controllers with High Dynamic Accuracy APS Division of Plasma Physics Meeting Abstracts. ,vol. 41, ,(1999)