MHD marking using the MSE polarimeter optics in ILW JET plasmas

S. Reyes Cortes, B. Alper, D. Alves, M. Baruzzo, J. Bernardo, P. Buratti, R. Coelho, C. Challis, I. Chapman, N. Hawkes, T.C. Hender, J. Hobirk, E. Joffrin

Research output: Contribution to journalArticle

Abstract

In this communication we propose a novel diagnostic technique, which uses the collection optics of the JET Motional Stark Effect (MSE) diagnostic, to perform polarimetry marking of observed MHD in high temperature plasma regimes. To introduce the technique, first we will present measurements of the coherence between MSE polarimeter, electron cyclotron emission, and Mirnov coil signals aiming to show the feasibility of the method. The next step consists of measuring the amplitude fluctuation of the raw MSE polarimeter signals, for each MSE channel, following carefully the MHD frequency on Mirnov coil data spectrograms. A variety of experimental examples in JET ITER-Like Wall (ILW) plasmas are presented, providing an adequate picture and interpretation for the MSE optics polarimeter technique.
Original languageEnglish
Article number11E556
Pages (from-to)-
JournalReview of Scientific Instruments
Volume87
Issue number11
DOIs
Publication statusPublished - 1 Nov 2016
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

Reyes Cortes, S., Alper, B., Alves, D., Baruzzo, M., Bernardo, J., Buratti, P., ... Joffrin, E. (2016). MHD marking using the MSE polarimeter optics in ILW JET plasmas. Review of Scientific Instruments, 87(11), -. [11E556]. https://doi.org/10.1063/1.4962244