Determination of plasma shape from poloidal field measurements on ISX-B

Technical Report · Sat Mar 01 00:00:00 EST 1980

DOI:https://doi.org/10.2172/5501502· OSTI ID:5501502

Swain, D. W.; Bates, S.; Neilson, G. H.; Peng, Y. K.M.

The ISX-B tokamak has a poloidal coil system designed to produce circular, elliptical, and D-shaped plasmas. Plasma shape and low-order multipole moments of the plasma current distribution are determined from experimental measurements of B/sub Z/, B/sub R/, and/or psi around the periphery of the vacuum chamber. The experimental arrangement and method of analysis of results, using a least squares method to fit the data points to a finite current filament model, are described in this report. Plasma shape results for circular and D-shaped plasmas with b/a less than or equal to 1.5 and an analysis of the sensitivity of the technique to measurement errors are presented. The results indicate that this method gives accurate measurements of the plasma boundary and is relatively insensitivie to errors.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5501502
• Report Number(s): ORNL/TM-7172; TRN: 80-005436
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ISX TOKAMAK
MAGNETIC FIELD CONFIGURATIONS
PLASMA DENSITY
ERRORS
MAGNET COILS
PLASMA
PLASMA DIAGNOSTICS
SHAPE
CONFIGURATION
ELECTRIC COILS
ELECTRICAL EQUIPMENT
EQUIPMENT
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
700102* - Fusion Energy- Plasma Research- Diagnostics