离子迴旋共振加热对低杂波电流驱动的影响

THE EFFECT OF ION CYCLOTRON RESONANCE HEATING ON LOWER HYBRID CURRENT DRIVE IN TOKAMAK PLASMA

离子迴旋共振频率(ICRF)波(ω=2Ω_D)和低杂(LH)波同时进入D-T聚变反应堆等离子体时,ICRF加热产生的高能D离子对LH波存在着较强的Landau阻尼吸收,影响了低杂波驱动电流(LHCD)的效率;提高LH波的频率,可降低加热离子对LH波的阻尼吸收。

A possible process occurring when ICRF wave for second harmonic heating of deuterium and LH wave for current drive are launched simultaneously into a D-T plasma in tokamak reactor is studied. The particle absorption of LH wave is calculated using linear theory. In combination with ICRH the LH-current drive efficiency is reduced. It decreases with increasing ICRF power due to the competing absorption of LH power by energetic D+. The absorption of LH wave by the energetic deuterium can be lowered by raising the LH wave frequency.