Fast Neutral Pressure Measurements in NSTX

Raman, R. ; Kugel, H.W. ; Provost, T. ; Gernhardt, R. ; Jarboe, T.R. ; Bell, M.G.

Princeton University. Plasma Physics Laboratory.

关键词: Vacuum;    70 Plasma Physics And Fusion Technology;    Spherical Torus;    Pressure Measurement Diagnostics;    Divertors;   

DOI  :  10.2172/808379
RP-ID  :  PPPL-3732
RP-ID  :  AC02-76CH03073
RP-ID  :  808379

美国|英语

来源: UNT Digital Library

【 摘 要 】

Several fast neutral pressure gauges have been installed on NSTX [National Spherical Torus Experiment] to measure the vessel and divertor pressure during inductive and coaxial helicity injected (CHI) plasma operations. Modified, PDX [Poloidal Divertor Experiment]-type Penning gauges have been installed on the upper and lower divertors. Neutral pressure measurements during plasma operations from these and from two shielded fast Micro ion gauges at different toroidal locations on the vessel mid-plane are described. A new unshielded ion gauge, referred to as the In-vessel Neutral Pressure (INP) gauge is under development.