Non-inductive solenoid-less plasma current startup in NSTX using transient CHI
Creators
- 1. University of Washington, Seattle, WA 98195 (United States)
- 2. Princeton Plasma Physics Laboratory, Princeton, NJ 08543 (United States)
- 3. Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)
- 4. University of California-Davis, Livermore, CA 94551 (United States)
- 5. Nova Photonics, Princeton, NJ 08543 (United States)
Description
Coaxial helicity injection (CHI) has been successfully used in the National Spherical Torus Experiment for a demonstration of closed flux current generation without the use of the central solenoid. The favourable properties of the spherical torus (ST) arise from its very small aspect ratio. However, small aspect ratio devices have very restricted space for a substantial central solenoid. Thus methods for initiating the plasma current without relying on induction from a central solenoid are essential for the viability of the ST concept. CHI is a promising candidate for solenoid-free plasma startup in a ST. The method has now produced closed flux current up to 160 kA verifying the high current capability of this method in a large ST built with conventional tokamak components
Additional details
Identifiers
- DOI
- 10.1088/0029-5515/47/8/009;
- PII
- S0029-5515(07)42887-3;
Publishing Information
- Journal Title
- Nuclear Fusion
- Journal Volume
- 47
- Journal Issue
- 8
- Journal Page Range
- p. 792-799
- ISSN
- 0029-5515
- CODEN
- NUFUAU
INIS
- Country of Publication
- International Atomic Energy Agency (IAEA)
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39033902
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- ASPECT RATIO; ELECTRIC CURRENTS; NSTX DEVICE; PLASMA; SOLENOIDS; SPHERICAL CONFIGURATION; TRANSIENTS
- Descriptors DEC
- CLOSED PLASMA DEVICES; CONFIGURATION; CURRENTS; DIMENSIONLESS NUMBERS; ELECTRIC COILS; ELECTRICAL EQUIPMENT; EQUIPMENT; SPHEROMAK DEVICES; THERMONUCLEAR DEVICES; TOKAMAK DEVICES