An Edge Rotation and Temperature Diagnostic on NSTX

Biewer, T.M. ; Bell, R.E. ; Feder, R. ; Johnson, D.W. ; Palladino, R.W.

Princeton University. Plasma Physics Laboratory.

关键词: Spectral Lines;    Nstx Device;    70 Plasma Physics And Fusion Technology;    Pressure Gradients;    Edge Plasma;   

DOI  :  10.2172/814754
RP-ID  :  PPPL-3862
RP-ID  :  AC02-76CH03073
RP-ID  :  814754

美国|英语

来源: UNT Digital Library

【 摘 要 】

A new diagnostic for the National Spherical Torus Experiment (NSTX) is described whose function is to measure ion rotation and temperature at the plasma edge. The diagnostic is sensitive to C III, C IV, and He II intrinsic emission, covering a radial region of 15 cm at the extreme edge of the outboard midplane. Thirteen chords are distributed between toroidal and poloidal views, allowing the toroidal and poloidal rotation and temperature of the plasma edge to be simultaneously measured with 10 ms resolution. Combined with the local pressure gradient and the EFIT code reconstructed magnetic field profile, the edge flow gives a measure of the local radial electric field.