Investigation of Edge Plasma Features in the HL-1M Tokamak

摘要

Edge plasma features in typical HL-1M discharges were presented. Particle confinement and plasma rotation have been investigated in the discharges with lower hybrid current drive (LHCD), molecular beam injection (MIB) and pellet fuelling. LCHD can make particle confinement increase a factor of 2-3 for low-denstiy discharge. Particle confinement tiem and poloidal rotation can be at least dobuled after pellet injeciton, while MBI can make confinement trime increase about one order of magnitude with hgiehr performance.