Numerical study of the inductive plasma coupling to ramp up the plasma density for the Linac4 H- ion source

作者：Ohta M^*; Mattei S; Yasumoto M; Hatayama A; Lettry J

来源：Review of Scientific Instruments, 2014, 85(2): 02B113.

DOI：10.1063/1.4833920

In the Linac4 H- ion source, the plasma is generated by an RF antenna operated at 2 MHz. In order to investigate the conditions necessary for ramping up the plasma density of the Linac4 H- ion source in the low plasma density, a numerical study has been performed for a wide range of parameter space of RF coil current and initial pressure from H-2 gas injection. We have employed an Electromagnetic Particle in Cell model, in which the collision processes have been calculated by a Monte Carlo method. The results have shown that the range of initial gas pressure from 2 to 3 Pa is suitable for ramping up plasma density via inductive coupling.

• 出版日期2014-2