Počet záznamů: 1  

Calculation of edge ion temperature and poloidal rotation velocity from carbon III triplet measurements on the COMPASS tokamak

  1. 1.
    0468414 - ÚFP 2017 RIV PL eng J - Článek v odborném periodiku
    Tomeš, Matěj - Weinzettl, Vladimír - Pereira, T. - Imríšek, Martin - Seidl, Jakub
    Calculation of edge ion temperature and poloidal rotation velocity from carbon III triplet measurements on the COMPASS tokamak.
    Nukleonika. Roč. 61, č. 4 (2016), s. 443-451. ISSN 0029-5922. E-ISSN 1508-5791.
    [Summer School of Plasma Diagnostics Phdiafusion - Soft X-Ray Diagnostics for Fusion Plasma. Bezmiechowa, 16.06.2015-20.06.2015]
    Institucionální podpora: RVO:61389021
    Klíčová slova: high-resolution spectroscopy * spectra processing * peak detection * line detection * line fi tting * poloidal plasma rotation * ion temperature * C III * impurity temperature
    Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
    Impakt faktor: 0.760, rok: 2016
    https://www.degruyter.com/view/j/nuka.2016.61.issue-4/nuka-2016-0073/nuka-2016-0073.xml

    A high-resolution spectroscopic system for the measurements of the CIII triplet at 465 nm was installed at the COMPASS tokamak. The Doppler broadening and shift of the measured spectral lines are used to calculate the edge ion temperature and poloidal plasma rotation. At fi rst, the spectroscopic system based on two-grating spectrometer and the calibration procedure is described. The signal processing including detection and removal of spiky features in the signal caused by hard X-rays based on the difference in the behaviour of
    Savitzky-Golay and median fi lters is explained. The detection and position estimation of individual spectral lines based on the continuous wavelet transform is shown. The method of fi tting of Gaussians using the orthogonal distance regression and estimation of the error of estimation of the rotation velocity and ion temperature is described. At the end, conclusions about the performance of the spectroscopic system and its shortcomings based on summary of results calculated from 2033 processed spectral lines measured in 61 shots are drawn and
    the possible enhancements are suggested.

    Trvalý link: http://hdl.handle.net/11104/0266269

     
     
Počet záznamů: 1  

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