Loading, absorption, and Fokker‐Planck calculations for upcoming ICRF experimetns on ATF±

ICRF experiments on ATF at the 100‐kW level are planned for the current 1989 operating period. These plans include the 2ωcH regime at fRF=28.88 MHz, D(H) at 14.44 MHz, and 4He(3He) and D(3He) at 9.63 MHz. ECH target plasmas have NeO≤0.15×1020 m−3 and B=0.95 T. The density and temperature profiles obtained are broader than those from 1988, owing to recent field error corrections. The values used for target‐plasma parameters in the calcualtions were taken from initial 1989 ATF data. Loading and absorption calcualtins have been perofmred using the 3D RF heating code OION with a helically symmetric equilibrium, and Fokker‐Planck calcualtins were performed using the steady‐state code RFTRANS with two velocity dimensions and one spatial dimension.