Simulations of alpha particle ripple loss from the International Thermonuclear Experimental Reactor

Journal Article · Thu Aug 01 04:00:00 EDT 1996 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.871640· OSTI ID:286354

Redi, M H; Budny, R V; McCune, D C; Miller, C O; White, R B ^[1]

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1. Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543 (United States)

Calculations of collisional stochastic ripple loss of alpha particles from the new 20 toroidal field (TF) coil International Thermonuclear Experimental Reactor (ITER) [{ital Plasma} {ital Physics} {ital and} {ital Controlled} {ital Nuclear} {ital Fusion} {ital Research} (International Atomic Energy Agency, Vienna, 1991), Vol. 3, p. 239] predict small alpha ripple losses, less than 0.4{percent}, close to the loss calculated for the full current operation of the earlier 24 TF coil design. An analytic fit is obtained to the ITER ripple data field demonstrating the nonlinear height dependence of the ripple minimum for D-shaped ripple contours. In contrast to alpha loss simulations for the Tokamak Fusion Test Reactor (TFTR) [Fusion Technol. {bold 21}, 1324 (1992)], a simple Goldston, White, and Boozer stochastic loss criterion [Phys. Rev. Lett. {bold 47}, 647 (1981)] ripple loss model is found to require an increased renormalization of the stochastic threshold {delta}{sub {ital s}}/{delta}{sub GWB}{approx_gt}1. Effects of collisions, sawtooth broadening, and reversal of the grad-{ital B} drift direction are included in the particle following simulations. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Princeton Plasma Physics Laboratory
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 286354
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 3; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALPHA PARTICLES
COLLISIONAL PLASMA
ITER TOKAMAK
MAGNETIC CONFINEMENT
PARTICLE LOSSES
PLASMA SIMULATION
SAWTOOTH OSCILLATIONS
THERMONUCLEAR DEVICES