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Title: Magnetic diagnostics for equilibrium reconstructions with eddy currents on the lithium tokamak experimenta)

The Lithium Tokamak eXperiment is a spherical tokamak with a close-fitting low-recycling wall composed of thin lithium layers evaporated onto a stainless steel-lined copper shell. Long-lived non-axisymmetric eddy currents are induced in the shell and vacuum vessel by transient plasma and coil currents and these eddy currents influence both the plasma and the magnetic diagnositc signals that are used as constraints for equilibrium reconstruction. A newly installed set of re-entrant magnetic diagnostics and internal saddle flux loops, compatible with high-temperatures and lithium environments, is discussed. Details of the axisymmetric (2D) and non-axisymmetric (3D) treatments of the eddy currents and the equilibrium reconstruction are presented.
 [1] ;  [2] ;  [1] ;  [1]
  1. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
  2. Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 0034-6748: RSINAK
DOE Contract Number:
AC02-09CH11466; AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Related Information: Copyright AIP Publishing LLC
Optical Society of America
Research Org:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Org:
Country of Publication:
United States
70 PLASMA PHYSICS AND FUSION TECHNOLOGY Magnetics; Equilibrium; Eddy Currents