2026-10-14T21:40:57Z https://www.scidb.cn/oai

10.57760/sciencedb.04617 2022-11-28T15:33:12Z

2022-11-28 Study on improvement of injection power for EAST-NBI doi:10.57760/sciencedb.04617 en In order to meet experimental requirements on high parameter plasma research, the injected power of counter injector is expected to increase at a fixed beam energy of 50keV for deuterium neutral beam. Three candidate schemes are compared to assess the possibilities of raising the injection power. Consider safety and economic factors，raising the electric field in the first gap is employed by adjusting the voltage gradient on the accelerator. The experiments show that the optimum perveance is increased from 2.2μP to 2.7μP by changing of gradient grid voltage from 0.84Vacc to 0.78Vacc. The ion beam power is promoted by about 50% at 3.0μP. But, beam transmission efficiency decreased to 60 % at 3.0μP. Thus, the injection power is boosted about 25%.  Neutral beam injection; Beam power; Gradient grid voltage liang li zhen PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset http://www.doi.org/10.1080/15361055.2018.1533619 Science Data Bank