Beam emission diagnostic for estimating neutral beam attenuation

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Ikeda, K. and Osakabe, M. and Whiteford, A. and Takeiri, Y. and Kaneko, O. and Kato, T. and Murakami, I. and Nagaoka, K. and Oka, Y. and Summers, H. and Tsumori, K. and grp, LHD experiment (2007) Beam emission diagnostic for estimating neutral beam attenuation. Fusion Science and Technology, 51 (2T). pp. 283-285. ISSN 1536-1055

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Abstract

Neutral beam attenuation has been investigated by the beam emission diagnostic system at LHD which consists of a quartz optical fiber, leading to a spectrometer and an ICCD detector. The spectral resolution and the reciprocal dispersion are 0.21 nm and 1.4 nm/mm, respectively. The behavior of the beam-stopping cross-section derived from the beam emission is consistent with that of the cross-section from the Atomic Data and Analysis Structure (ADAS) database. The intensity of the beam emission decreases with increasing stopping cross-section from the use of heavy ions in a discharge. We have also observed that the measured cross-section of the hydrogen is larger than that of the ADAS calculation.

  • Item type:Article
    ID code:31228
    Dates:
    Date
    Event
    1 February 2007
    Published
    Notes:6th International Conference on Open Magnetic Systems for Plasma Confinement, Tsukuba, JAPAN, JUL 17-21, 2006
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:13 Jul 2011 08:55
    Last modified:11 Nov 2024 09:45
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/31228
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