Methods for the estimate of the magnetic axis, the last closed flux surface and the differential shift in an RFP plasma

A. Boboc, P. Franz, A. Murari, L. Giudicotti, E. Zilli, P. Zanca, M. O'Gorman, S. Prunty

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Abstract

We present a preliminary investigation of the plasma column displacement in the RFX reversed field pinch (RFP) experiment, carried out with different diagnostics. Determinations of the plasma position have been obtained by a set of external pick-up coils, a multichannel far infrared (FIR) polarimeter and a soft x-ray (SXR) tomographic camera. These diagnostics provide complementary information about the plasma position. In particular, the location of the polarimetric chords allows a direct estimate of the horizontal magnetic axis shift. The analysis of the isoemissivity SXR surfaces also allow investigations of the differential shift of the various magnetic surfaces. A comparison of the results of these three diagnostics is reported, and their agreement is found to be satisfactory and consistent with our expectations.
Original languageEnglish
Pages (from-to)913 - 916
Number of pages4
JournalNuclear Fusion
Volume42
Issue number7
DOIs
Publication statusPublished - Jul 2002
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Boboc, A., Franz, P., Murari, A., Giudicotti, L., Zilli, E., Zanca, P., ... Prunty, S. (2002). Methods for the estimate of the magnetic axis, the last closed flux surface and the differential shift in an RFP plasma. Nuclear Fusion, 42(7), 913 - 916. https://doi.org/10.1088/0029-5515/42/7/314