Investigation on the edge cooling threshold of the density limit in the J-TEXT tokamak with limiter and divertor configurations
X Xu,
Z P Chen,
Q H Yang
et al.
Abstract:The cooling of the plasma edge is widely considered to be a key element in the density limit of tokamak. This paper investigates the critical edge cooling threshold of the density limit, exploring various plasma configurations in the J-TEXT tokamak. Notably, significant differences in edge electron temperature in the vicinity of last closed flux surface (LCFS) were observed between limiter and divertor configuration. However, the electron temperature dropped to a similar level in the vicinity of q = 3 surface … Show more
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