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A new calibration code for the JET polarimeter.

Authors
  • Gelfusa, M
  • Murari, A
  • Gaudio, P
  • Boboc, A
  • Brombin, M
  • Orsitto, F P
  • Giovannozzi, E
Type
Published Article
Journal
Review of Scientific Instruments
Publisher
American Institute of Physics
Publication Date
May 01, 2010
Volume
81
Issue
5
Pages
53507–53507
Identifiers
PMID: 20527097
Source
Medline
License
Unknown

Abstract

An equivalent model of JET polarimeter is presented, which overcomes the drawbacks of previous versions of the fitting procedures used to provide calibrated results. First of all the signal processing electronics has been simulated, to confirm that it is still working within the original specifications. Then the effective optical path of both the vertical and lateral chords has been implemented to produce the calibration curves. The principle approach to the model has allowed obtaining a unique procedure which can be applied to any manual calibration and remains constant until the following one. The optical model of the chords is then applied to derive the plasma measurements. The results are in good agreement with the estimates of the most advanced full wave propagation code available and have been benchmarked with other diagnostics. The devised procedure has proved to work properly also for the most recent campaigns and high current experiments.

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