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Sökning: onr:"swepub:oai:research.chalmers.se:3c919e00-bc88-4c9a-8226-36aaa4b105ca" > Physics of Plasmas ...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003349naa a2200445 4500
001oai:research.chalmers.se:3c919e00-bc88-4c9a-8226-36aaa4b105ca
003SwePub
008171006s2004 | |||||||||||000 ||eng|
0247 a https://research.chalmers.se/publication/24832 URI
040 a (SwePub)cth
041 a engb eng
042 9 SwePub
072 7a art2 swepub-publicationtype
072 7a ref2 swepub-contenttype
1001 a Chu, M.S.4 aut
2451 0a Physics of Plasmas Modeling of Feedback and Rotation Stabilization of the Resistive Wall Mode in Tokamaks
264 1c 2004
520 a Steady-state operation of the advanced tokamak reactor relies on maintaining plasma stability with respect to the resistive wall mode ~RWM!. Active magnetic feedback and plasma rotation are the two methods proposed and demonstrated for this purpose. A comprehensive modeling effort including both magnetic feedback and plasma rotation is needed for understanding the physical mechanisms of the stabilization and to project to future devices. For plasma with low rotation, a complete solution for the feedback issue is obtained by assuming the plasma obeys ideal magnetohydrodynamics ~MHDs! and utilizing a normal mode approach ~NMA! @M. S. Chu et al., Nucl. Fusion 43, 441 ~2003!#. It is found that poloidal sensors are more effective than radial sensors and coils inside of the vacuum vessel more effective than outside. For plasmas with non-negligible rotation, a comprehensive linear nonideal MHD code, the MARS-F has been found to be suitable. MARS-F @Y. Q. Liu et al., Phys. Plasmas 7, 3681 ~2000!# has been benchmarked in the ideal MHD limit against the NMA. The effect of rotation stabilization of the plasma depends on the plasma dissipation model. Broad qualitative features of the experiment are reproduced. Rotation reduces the feedback gain required for RWM stabilization. Reduction is significant when rotation is near the critical rotation speed needed for stabilization. The International Thermonuclear Experimental Reactor ~ITER! @R. Aymar et al., Plasma Phys. Controlled Fusion 44, 519 ~2002!# ~scenario IV for advanced tokamak operation! may be feedback stabilized with babove the no wall limit and up to an increment of ;50% towards the ideal limit. Rotation further improves the stability.
650 7a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
653 a Resistive Wall Mode
653 a Feedback
653 a Tokamak
653 a Rotation
7001 a Bondeson, Anders,d 1953u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)elfab
7001 a Chance, M.S.4 aut
7001 a Liu, Yueqiang,d 1971u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)elfliu
7001 a Garofalo, A.M.4 aut
7001 a Glasser, A.H.4 aut
7001 a Jackson, G.L.4 aut
7001 a LaHaye, R.J.4 aut
7001 a Lao, L.L.4 aut
7001 a Navratil, G.A.4 aut
7001 a Okabayashi, M.4 aut
7001 a Remierdes, H.4 aut
7001 a Scoville, J.T.4 aut
7001 a Strait, E.J.4 aut
7102 a Chalmers tekniska högskola4 org
7730 t Physics of Plasmasg 11, s. 2497-q 11<2497-
8564 8u https://research.chalmers.se/publication/2483

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