ALPHA-DRIVEN MAGNETOHYDRODYNAMICS (MHD) AND MHD-INDUCED ALPHA-LOSS INTHE TOKAMAK FUSION TEST REACTOR

Authors
CHANG Z NAZIKIAN R FU GY WHITE RB ZWEBEN SJ FREDRICKSON ED BATHA SH BELL MG BELL RE BUDNY RV BUSH CE CHEN L CHENG CZ DARROW D LEBLANC B LEVINTON FM MAJESKI RP MANSFIELD DK MCGUIRE KM PARK HK REWOLDT G SYNAKOWSKI EJ TANG WM TAYLOR G VONGOELER S WONG KL ZAKHAROV L
Citation
Z. Chang et al., ALPHA-DRIVEN MAGNETOHYDRODYNAMICS (MHD) AND MHD-INDUCED ALPHA-LOSS INTHE TOKAMAK FUSION TEST REACTOR, Physics of plasmas, 4(5), 1997, pp. 1610-1616
Citations number
40
Categorie Soggetti
Phsycs, Fluid & Plasmas
Journal title
Physics of plasmas → ACNP
ISSN journal
1070664X
Volume
4
Issue
5
Year of publication
1997
Part
2
Pages
1610 - 1616
Database
ISI
SICI code
1070-664X(1997)4:5<1610:AM(AMA>2.0.ZU;2-Q
Abstract
Alpha-driven toroidal Alfven eigenmodes (TAEs) are observed as predict ed by theory in the post-neutral beam phase in high central q (safety factor) deuterium-tritium (D-T) plasmas in the Tokamak Fusion Test Rea ctor (TFTR) [D. J. Grove and D. M. Meade, Nucl. Fusion 25, 1167 (1985) ]. The mode location, poloidal structure, and the importance of q prof ile for TAE instability are discussed. So far no alpha particle loss d ue to these modes was detected due to the small mode amplitude. Howeve r, alpha loss induced by kinetic ballooning modes (KBMs) was observed in high-confinement D-T discharges. Particle orbit simulation demonstr ates that the wave-particle resonant interaction can explain the obser ved correlation between the increase in alpha loss and appearance of m ultiple high-n (n greater than or equal to 6, n is the toroidal mode n umber) modes.