Abstract
Plasma heating by waves in the cyclotron frequency range (ICRF) in parallel with neutral beams is proposed for the volumetric neutron source based on the JUST-T tokamak project. Calculations of the transverse refractive index ( ) were performed for slow waves (SW) and fast magnetosonic waves (FW) versus the plasma radius. The coefficients of SW and FW decay for ICRH at the harmonics of the ion-cyclotron frequency and for ions and electrons were calculated. The calculations were performed for three DT mixtures: (a) deuterium minority in tritium plasmas; (b) n D∼ n T; and (c) tritium minority in deuterium plasmas. The calculations were also performed for 3He minority in DT plasmas with comparable D and T concentrations. The effective formation of travelling fast waves in VNS JUST-T by phasing several loop antennas located some distance away in the toroidal direction to provide current drive is investigated.
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