ENERGY CONFINEMENT OF BEAM-HEATED DIVERTOR AND LIMITER DISCHARGES IN DOUBLET III*

摘要: Observation of the intensity recycling particle flux at main plasma edge for various limiter and divertor discharges indicates that gross energy confinement beam-heated is closely related to flux. In discharges, global time τE show many similarities: 1) linear Ip dependence < 600 kA, 2) no BT dependence, 3) deterioration against injection power. Improvement by increasing Ip, example, associated with high temperatures region accompanied reduced recycling. – Divertor low around better than densities. The improvement primarily originated in reduction heat transport region, which edge. Under certain operation condition, excessive cold-gas puffing, discharge shows relatively scrape-off density strong between limiter. these degrades somewhat or reduces completely discharge. low-recycling central electron ion temperature proportional power, stored ePabs (scales as INTOR scaling). With ≈ 4 MW beam injection, high-temperature high-density plasmas were obtained (stored up 280 kJ, Te(0) Ti(0) 2.5–3.0 keV e (6–7) × 1013 cm−3, τE* 70 ms).