Operational limits in the National Spherical Torus Experiment

Kaye, S.M. ; Bell, M. G. ; Bell, R. E. ; Gates, D. ; Maingi, R. ; Mazzucato, E. ; Menard, J. ; Mueller, D. ; Park, W. ; Paul, S. ; Sabbagh, S. ; Stutman, D.

Princeton University. Plasma Physics Laboratory.

关键词: Nstx Device;    70 Plasma Physics And Fusion Technology;    Plasma Impurities;    Plasma Density;    Limiting Values;   

DOI  :  10.2172/757304
RP-ID  :  PPPL-3454
RP-ID  :  AC02-76CH03073
RP-ID  :  757304

美国|英语

来源: UNT Digital Library

【 摘 要 】

The National Spherical Torus Experiment (NSTX) is a proof-of-principle scale device whose mission is to establish the physics basis of low aspect configurations most notably in the areas of plasma stability, transport and non-inductive current drive. The first series of physics experiments was conducted during the period from Sept. 1999 through Jan. 2000. Among the first experiments was a study to map out and characterize the operational density and q-limits. Density limits have typically been associated with enhanced radiated power due to overfuelling or impurity influx, although ion neoclassical transport may impose a density limit at very high densities in ohmic, gas-fueled plasmas. q-limits have typically been manifestations of destabilization of m=2/n=1 kink or tearing modes that lead to a sudden discharge termination.