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Title: Least-squares fit analysis program for the evaluation of spatially resolved x-ray spectra from tokamak plasmas

Abstract

A least-squares fit analysis program is being developed for the study of spatially resolved x-ray spectra from tokamak plasmas. The program, written in interactive data language, can handle analysis of spectra from multiple sightlines through the plasma and compare the experimental data with a least-square fit of synthetic spectra, which are constructed from atomic modeling codes. The input parameters such as shot numbers, time groups, spatial range, spectral lines to fit and fitting parameters can be entered interactively through a graphical user interface or automatically via a script. The output consists of graphical presentations of the obtained spectral fits and fit parameter profiles as a function of time, including ion and electron temperature profiles, which are of particular interest. Output can also be sent to any open database connectivity compliant database. The features of the program are demonstrated with the analysis of the spectra of helium-like ArXVII, which were obtained with a new x-ray imaging crystal spectrometer.

Authors:
; ; ;  [1]
  1. Princeton University, Princeton, New Jersey 08543 (United States)
Publication Date:
OSTI Identifier:
20636743
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 75; Journal Issue: 10; Conference: 15. topical conference on high temperature plasma diagnostics, San Diego, CA (United States), 19-22 Apr 2004; Other Information: DOI: 10.1063/1.1790045; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CRYSTALS; ELECTRON TEMPERATURE; HELIUM; ION TEMPERATURE; PLASMA CONFINEMENT; PLASMA DIAGNOSTICS; SPECTROMETERS; TIME DEPENDENCE; TOKAMAK DEVICES; X-RAY SPECTRA

Citation Formats

Mastrovito, D, Bitter, M, Hill, K W, Gu, M F, and Stanford University, Stanford, California 94305. Least-squares fit analysis program for the evaluation of spatially resolved x-ray spectra from tokamak plasmas. United States: N. p., 2004. Web. doi:10.1063/1.1790045.
Mastrovito, D, Bitter, M, Hill, K W, Gu, M F, & Stanford University, Stanford, California 94305. Least-squares fit analysis program for the evaluation of spatially resolved x-ray spectra from tokamak plasmas. United States. doi:10.1063/1.1790045.
Mastrovito, D, Bitter, M, Hill, K W, Gu, M F, and Stanford University, Stanford, California 94305. Fri . "Least-squares fit analysis program for the evaluation of spatially resolved x-ray spectra from tokamak plasmas". United States. doi:10.1063/1.1790045.
@article{osti_20636743,
title = {Least-squares fit analysis program for the evaluation of spatially resolved x-ray spectra from tokamak plasmas},
author = {Mastrovito, D and Bitter, M and Hill, K W and Gu, M F and Stanford University, Stanford, California 94305},
abstractNote = {A least-squares fit analysis program is being developed for the study of spatially resolved x-ray spectra from tokamak plasmas. The program, written in interactive data language, can handle analysis of spectra from multiple sightlines through the plasma and compare the experimental data with a least-square fit of synthetic spectra, which are constructed from atomic modeling codes. The input parameters such as shot numbers, time groups, spatial range, spectral lines to fit and fitting parameters can be entered interactively through a graphical user interface or automatically via a script. The output consists of graphical presentations of the obtained spectral fits and fit parameter profiles as a function of time, including ion and electron temperature profiles, which are of particular interest. Output can also be sent to any open database connectivity compliant database. The features of the program are demonstrated with the analysis of the spectra of helium-like ArXVII, which were obtained with a new x-ray imaging crystal spectrometer.},
doi = {10.1063/1.1790045},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 75,
place = {United States},
year = {2004},
month = {10}
}