Numerical study of minority ion heating scenarios in CN-H1 stellarator plasma

A preliminary simulation of ion cyclotron resonance heating (ICRH) in the poloidal cross-section at the antenna location of the CN-H1 (Chinese Heliac 1) stellarator has been conducted for the first time using the full-wave solver TORIC. The heating scheme employed focuses on minority ion heating of He 4 (H), with an independent investigation into the effects of wave frequency, toroidal mode number, and minority ion concentration on ICRH. Preliminary simulation results indicate that, under the conditions of wave frequency f = 4.7MHz, central magnetic field B 0 = 0.32T and low-temperature, low-density plasma (with density on the order of 10 18 m −3 and temperature in the range of tens of eV), more efficient minority-ion heating can be achieved when the toroidal mode number is in the range of 10–20 and the minority ion concentration is between 15% and 30%. This simulation provides theoretical insights and delineates the parameter space for prospective ICRH experiments in CN-H1.