30管弹丸发射系统真空负荷及多级扩散

VACUUM LOAD AND MULTI-STAGE DIFFUSION OF 30-BARRELS PELLET INJECTOR SYSTEM

HL - 2A装置 30管弹丸发射系统选用了多级真空扩散室和 2种导管相集合的方式 ,以限制发射弹丸时推进剂进入放电真空室。这一设计主要取决于弹丸发射过程中推进剂的用量 ,并满足HL - 2A从装置外侧(低磁场侧 )及内侧 (高磁场侧 )加料时物理实验的需要。最后介绍了根据推进剂用量确定的真空负荷。

The multi_stage vacuum diffusion chamber and the guide tubes have been chosen to limit the propellant of the 30 barrels pellet injector for entry into the vessel of HL_2A tokamak. This design mainly depended on the load of the propellant during pellet injection and met the requirments of fuelling experiments from the low magnetic field side (LFS)to high magnetic field side (HFS)of HL_2A. The vacuum load,the structure of the guide tubes and the pumping system for 30_barrels pellet injector were introduced.