Strike Point Control on EAST Using an Iso?ux Control Method

XING Zhe (邢哲); XIAO Bingjia (肖炳甲); LUO Zhengping (罗正平); M. L. WALKER; D. A. HUMPHREYS

doi:10.1088/1009-0630/17/9/09

Plasma Science and Technology > 2015 > 17(9): 774-780. > DOI: 10.1088/1009-0630/17/9/09

XING Zhe (邢哲), XIAO Bingjia (肖炳甲), LUO Zhengping (罗正平), M. L. WALKER, D. A. HUMPHREYS. Strike Point Control on EAST Using an Iso?ux Control Method[J]. Plasma Science and Technology, 2015, 17(9): 774-780. DOI: 10.1088/1009-0630/17/9/09

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Strike Point Control on EAST Using an Iso?ux Control Method

1Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China 2School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China 3General Atomics, General Atomics Ct., San Diego, CA 92186, USA

Funds: supported by the National Magnetic Confinement Fusion Science Program of China (Nos. 2012GB105000 and 2014GB103000)

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Received Date: October 15, 2014

Graphical Abstract

Abstract

Abstract

For the advanced tokamak, the particle deposition and thermal load on the divertor is a big challenge. By moving the strike points on divertor target plates, the position of particle deposition and thermal load can be shifted. We could adjust the Poloidal Field (PF) coil current to achieve the strike point position feedback control. Using isoflux control method, the strike point position can be controlled by controlling the X point position. On the basis of experimental data, we establish relational expressions between X point position and strike point position. Benchmark experiments are carried out to validate the correctness and robustness of the control methods. The strike point position is successfully controlled following our command in the EAST operation.
- EAST,
- plasma control system,
- strike point control

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References (1)

References

Wesson J. 1997, Tokamaks. Oxford University Press,Oxford, UK 2 Pironti A and Walker M. 2005, IEEE Control Systems Magazine, 25: 30 3 Beghi A and Cenedese A. 2005, IEEE Control Systems Magazine, 25: 44 4 Mirnov S, Wesley J, Fujisawa N, et al. 1999, Nuclear Fusion, 39: 2577 5 Ariola M and Pironti A. 2005, IEEE Control Systems Magazine, 25: 65 6 Kolemen E, Gates D A, Rowley C W, et al. 2010, Nuclear Fusion, 50: 105010 7 Petrie T W, Fenstermacher M E, Lasnier C J. 2001, Fusion Technology, 39: 916 8 Ferron J R, Penaflor B, Walker M L, et al. 1996, Fusion Engineering, 2: 870 9 Xiao Bingjia, Humphreys D A, Walker M L, et al. 2008, Fusion Engineering and Design, 83: 181 10 Ferron J R, Walker M L, Lao L L, et al. 1998, Nuclear Fusion, 38: 1055 11 Lao L L, John H St, Stambaugh R D, et al. 1985, Nuclear Fusion, 25: 1611 12 Penaflor B G, Ferron J R, Walker M L, et al. 2008, Fusion Engineering and Design, 83: 176 13 Walker M L, Humphreys D A, Ferron J R. 1997, Proceedings of the 36th IEEE Conference, 4: 37 14 Ferron J R, Walker M L, Penaflor B, et al. 2003, Application Programmer’s Guide to the Plasma Control System, DIII-D Documents. General Atomics, Gneral Atomics Ct., San Diego

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