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

关键词: ANTENNAS;    BOOTSTRAP CURRENT;    DEUTERIUM;    ELECTRIC CURRENTS;    HEATING;    PLASMA;    TRANSPORT Heating;    ICRF;    Tokamacs;    NSTX;   

DOI  :  10.2172/1037992
RP-ID  :  PPPL-4729
PID  :  OSTI ID: 1037992
Others  :  TRN: US1202177

学科分类：原子、分子光学和等离子物理

美国|英语

来源: SciTech Connect

【 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.