Precision of ion temperature measurements in a Tokamak plasma using collective Thomson scattering: a numerical study

A numerical simulation has been performed to investigate the precision of a T sub(i) measurement of a Tokamak plasma, via collective Thomson scattering at 385 mu m. The study is based on a parameter and data set referring to an experiment that has been carried out at the TCA Tokamak, using a pulsed...

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Bibliographic Details
Published inPlasma physics and controlled fusion Vol. 32; no. 9; pp. 713 - 727
Main Authors Krug, P A, Behn, R, Salito, S A, Siegrist, M R
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.09.1990
Institute of Physics
Subjects
Exact sciences and technology
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma diagnostic techniques and instrumentation
Tokamak
Theoretical study
Numerical calculation
Plasma diagnostic
Ion temperature
Thomson scattering
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Summary:A numerical simulation has been performed to investigate the precision of a T sub(i) measurement of a Tokamak plasma, via collective Thomson scattering at 385 mu m. The study is based on a parameter and data set referring to an experiment that has been carried out at the TCA Tokamak, using a pulsed D sub(2)O laser and a heterodyne receiver system. We investigate the influence of uncertainties in various plasma parameters required for the T sub(i) evaluation from a scattered spectrum. Typical relative errors of plus or minus 25% have already been obtained, but careful optimization of the system, taking into account the results of this study, and further technical improvements should allow a reduction of this limit to about plus or minus 10% for the plasma conditions considered.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0741-3335
1361-6587
DOI:10.1088/0741-3335/32/9/003