Noninductive Current Generation in NSTX using Coaxial Helicity Injection

Raman, R. ; Jarboe, T.R. ; Mueller, D. ; Schaffer, M.J. ; Maqueda, R. ; Nelson, B.A. ; Sabbagh, S. ; Bell, M. ; Ewig, R. ; Fredrickson, E. ; Gates, D. ; Hosea, J. ; Jardin, S. ; Ji, H. ; Kaita, R. ; Kaye, S.M. ; Kugel, H. ; Lao, L. ; Maingi, R. ; Menard, J. ; Ono, M. ; Orvis, D. ; Paul, S. ; Peng, M. ; Skinner, C.H. ; Wilgen, J.B. ; Zweben, S. ; Team, and the NSTX Research

Princeton University. Plasma Physics Laboratory.

关键词: Beam Injection;    Nstx Device;    Solenoids;    70 Plasma Physics And Fusion Technology;    Helicity;   

DOI  :  10.2172/784548
RP-ID  :  PPPL-3562
RP-ID  :  AC02-76CH03073
RP-ID  :  784548

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来源: UNT Digital Library

【 摘 要 】

Coaxial Helicity Injection (CHI) on the National Spherical Torus Experiment (NSTX) has produced 240 kA of toroidal current without the use of the central solenoid. Values of the current multiplication ratio (CHI produced toroidal current/injector current) up to 10 were obtained, in agreement with predictions. The discharges which lasted for up to 200 ms, limited only by the programmed waveform, are more than an order of magnitude longer in duration that any CHI discharges previously produced in a Spheromak or a Spherical Torus (ST).