Equilibrium field coils and free-boundary equilibrium considerations for TNS
Description
The Next Step (TNS) tokamak is expected to have a D-shaped plasma to permit MHD stable operation with volume averaged-beta, antiβ up to 10 percent. By following a procedure similar to the method of virtual casing, external coil arrangements were produced that reproduce the ideal vacuum vertical field B/sub z//sup ID/ for a D-shaped plasma to within a few percent root-mean-squared deviation. A typical coil system and a free-boundary equilibrium are shown. It is seen that D-shaped equilibria can be with the external coils. Again, three sets of coils are sufficient for centering and shaping the plasma for the range of antiβ values of interest. It is concluded that placing the equilibrium field coils external to the toroidal field coils has the potential of substantially reducing the cost and complexity of the D-shaped TNS device
Availability note (English)
MF available from INIS under the Report Number; Available from NTIS., PC A02/MF A01.
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Additional details
Publishing Information
- Imprint Pagination
- 8 p.
- Report number
- CONF-771109--59
Conference
- Title
- ANS winter meeting.
- Dates
- 27 Nov - 2 Dec 1977.
- Place
- San Francisco, CA, USA.
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 9393447
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BETA RATIO; MAGNET COILS; MAGNETIC FIELD CONFIGURATIONS; PLASMA; SHAPE; THERMONUCLEAR REACTORS; TOKAMAK DEVICES
- Descriptors DEC
- CLOSED PLASMA DEVICES; CONFIGURATION; ELECTRIC COILS; ELECTRICAL EQUIPMENT; THERMONUCLEAR DEVICES