Počet záznamů: 1  

Energy composition of high-energy neutral beams on the COMPASS tokamak

  1. 1.
    0464276 - ÚFP 2017 RIV PL eng J - Článek v odborném periodiku
    Bogár, Klára - Stöckel, Jan - Varju, Jozef - Weinzettl, Vladimír
    Energy composition of high-energy neutral beams on the COMPASS tokamak.
    Nukleonika. Roč. 61, č. 4 (2016), s. 419-423. ISSN 0029-5922. E-ISSN 1508-5791.
    [Summer School of Plasma Diagnostics PhDiaFusion 2015: “Soft X-ray Diagnostics for Fusion Plasma”. Bezmiechowa, 16.06.2015-20.06.2015]
    Grant CEP: GA MŠMT(CZ) LM2011021; GA MŠMT(CZ) 8D15001
    Institucionální podpora: RVO:61389021
    Klíčová slova: tokamak * neutral beam injection (NBI) * Doppler effect * beam composition * beam composition
    Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
    Impakt faktor: 0.760, rok: 2016
    http://www.ichtj.waw.pl/nukleonikaa/?p=1256

    The COMPASS tokamak is equipped with two identical neutral beam injectors (NBI) for additional plasma heating. They provide a beam of deuterium atoms with a power of up to ~(2 × 300) kW. We show that the neutral beam is not monoenergetic but contains several energy components. An accurate knowledge of the neutral beam power in each individual energy component is essential for a detailed description of the beam--plasma interaction and better understanding of the NBI heating processes in the COMPASS tokamak. This
    paper describes the determination of individual energy components in the neutral beam from intensities of the
    Doppler-shifted D lines, which are measured by a high-resolution spectrometer viewing the neutral beam-line
    at the exit of NBI. Furthermore, the divergence of beamlets escaping single aperture of the last accelerating
    grid is deduced from the width of the Doppler-shifted lines. Recently, one of the NBI systems was modifi ed by
    the removal of the Faraday copper shield from the ion source. The comparison of the beam composition and the
    beamlet divergence before and after this modifi cation is also presented.
    Trvalý link: http://hdl.handle.net/11104/0263225

     
     
Počet záznamů: 1  

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