Generation Of High Non-inductive Plasma Current Fraction H-mode Discharges By High-harmonic Last Wave Heating In The National Spherical Torus Experiment

Taylor, G. ; Kessel, C. E. ; LeBlanc, B. P. ; Mueller, D. ; Phillips, D. K. ; Valeo, E. J. ; Wilson, J. R. ; Ryan, P. M. ; Bonoli, P. T. ; Wright, J. C.

Princeton University. Plasma Physics Laboratory.

关键词: Heating, Icrf, Tokamacs, Nstx;    Heating;    Bootstrap Current;    Transport Heating, Icrf, Tokamacs, Nstx;    70 Plasma Physics And Fusion Technology;   

DOI  :  10.2172/1037992
RP-ID  :  PPPL-4729
RP-ID  :  DE-ACO2-09CH11466
RP-ID  :  1037992

美国|英语

来源: UNT Digital Library

【 摘 要 】

1.4 MW of 30 MHz high-harmonic fast wave (HHFW) heating, with current drive antenna phasing, has generated a Ip = 300kA, BT (0) = 0.55T deuterium H-mode plasma in the National Spherical Torus Experiment that has a non-inductive plasma current fraction, fNI = 0.7-1. Seventy-five percent of the non-inductive current was generated inside an internal transport barrier that formed at a normalized minor radius, r/a {approx} 0.4 . Three quarters of the non-inductive current was bootstrap current and the remaining non-inductive current was generated directly by HHFW power inside r/a {approx} 0.2.