TFTR Mirnov coil analysis at plasma start-up

Technical Report · Wed Jan 01 00:00:00 EST 1986

DOI:https://doi.org/10.2172/6027511· OSTI ID:6027511

Harley, T R; Buchenauer, D A; Coonrod, J; McGuire, K M

The methods for finding poloidal and toroidal numbers of MHD oscillations from Mirnov coils are reviewed and modified. Examples of various MHD phenomena occurring during start-up on TFTR are illustrated. It is found that the MHD mode structure best fits a model with the toroidal correction included. A new algorithm which finds m,n numbers can accommodate toroidal effects which are manifested in the phase data. The algorithm can find m,n numbers with a given toroidal correction parameter lambda', (lambda' = 0 cylindrical). This algorithm is also used to find the optimal value of lambda' automatically, eliminating the need for ''guesswork.'' The algorithm finds the best parameters to the fit much faster than more conventional computational techniques. 9 refs., 21 figs., 2 tabs.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 6027511
• Report Number(s): PPPL-2298; ON: DE86006354
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
TFTR TOKAMAK
START-UP
ALGORITHMS
COMPUTERIZED SIMULATION
MAGNET COILS
MAGNETOHYDRODYNAMICS
TEARING INSTABILITY
ELECTRIC COILS
ELECTRICAL EQUIPMENT
EQUIPMENT
FLUID MECHANICS
HYDRODYNAMICS
INSTABILITY
MATHEMATICAL LOGIC
MECHANICS
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
SIMULATION
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
700202* - Fusion Power Plant Technology- Magnet Coils & Fields