Noninductive Current Generation in NSTX using Coaxial Helicity Injection

Technical Report · Thu May 10 00:00:00 EDT 2001

DOI:https://doi.org/10.2172/784548· OSTI ID:784548

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

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).

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 784548
• Report Number(s): PPPL-3562; TRN: US0106113
• Resource Relation: Other Information: PBD: 10 May 2001
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
NSTX DEVICE
HELICITY
SOLENOIDS
BEAM INJECTION
BEAM CURRENTS