关键词: 等离子体储能, 等离子体旋转, 有效电荷数

Abstract:

In order to estimate the neutral beam injection heating effect and study the impact of the plasma rotation and the effective charge number Z_eff on neutron emission, the simulation code TRASNP is adopted, combined the experiment data. The relations between the neutron emission and the plasma stored energy, plasma rotation speed and the effective charge Z_eff are investigated in EAST with neutral beam injection heating. The simulated results show that the plasma will produce larger rotation when the neutral beam is injected with energy 65keV and injected power 3MW. The rotation can reduce fast ion thermalized time and decrease the neutron production. The pitch angle scattering of fast ion is enhanced, the beam-target reaction decreases, and the neutron production reduces when the effective charge number Z_eff increases. The results also indicate that the neutron emission rate increases with the increase of plasma stored energy.

Key words: The plasma stored energy, Plasma rotation, Z_eff