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In situ monitoring hydrogen isotope retention in ITER first wall

机译:原位监测ITER第一壁中氢同位素的保留

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摘要

Tritium retention inside the vacuum vessel is a potentially serious constraint in the operation of large-scale fusion machines like ITER. An in situ diagnostics for first wall H/D/T retention by laser induced desorption spectroscopy (LIDS) is proposed for use between plasma discharges. The technique is based on local baking of the first wall by laser irradiation and subsequent analysis of the in-vessel gas by optical emission spectroscopy of plasma radiation. The local heating implementation, kinetics of H/D/T thermal extraction and the accuracy of optical emission spectroscopy measurements are analysed. To resolve the H/D/T lines spectroscopically, their thermal broadening should be minimized to prevent overlapping of the line shapes. A comparative performance analysis of several types of plasma sources with relatively cold ions is made including the following types of discharges: Penning, RF multipactor, laser torch and ECR. All these radiation sources require rather low power and could be used for remote in situ measurements of relative densities of the thermally extracted hydrogen isotopes.
机译:I在真空容器中的滞留可能对像ITER这样的大型聚变机的运行造成严重的限制。建议在等离子体放电之间使用激光诱导解吸光谱法(LIDS)对第一壁H / D / T保留进行原位诊断。该技术基于通过激光辐射对第一壁进行局部烘烤,然后通过等离子辐射的光学发射光谱对船上气体进行分析。分析了局部加热的实施,H / D / T热萃取的动力学以及光发射光谱测量的准确性。为了在光谱上解析H / D / T线,应将其热展宽减至最小,以防止线形重叠。对几种类型的具有相对较冷离子的等离子体源进行了比较性能分析,包括以下几种放电类型:Penning,RF multipactor,激光炬和ECR。所有这些辐射源都需要相当低的功率,并可用于远程原位测量热提取氢同位素的相对密度。

著录项

  • 来源
    《Nuclear fusion》 |2016年第3期|036017.1-036017.10|共10页
  • 作者单位

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    ITER Organization, CS 90 046, 13067 St. Paul Lez Durance Cedex, France;

    ITER Organization, CS 90 046, 13067 St. Paul Lez Durance Cedex, France;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    ITER Organization, CS 90 046, 13067 St. Paul Lez Durance Cedex, France;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    Frumkin Institute of Physical Chemistry and Electrochemistry, 119071 Moscow, RF, Russia;

    Spectral-Tech, ZAO, 194021, St. Petersburg, RF, Russia;

    Frumkin Institute of Physical Chemistry and Electrochemistry, 119071 Moscow, RF, Russia;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    NRC 'Kurchatov Institute', 123182, Moscow, RF, Russia,National Research Nuclear University MEPhI, Moscow 115409, RF, Russia;

    ITER Organization, CS 90 046, 13067 St. Paul Lez Durance Cedex, France,National Research Nuclear University MEPhI, Moscow 115409, RF, Russia;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    NRC 'Kurchatov Institute', 123182, Moscow, RF, Russia;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    Efremov Scientific Research Institute of Electrophysical Apparatus 189631 St. Petersburg RF, Russia;

    Frumkin Institute of Physical Chemistry and Electrochemistry, 119071 Moscow, RF, Russia;

    Efremov Scientific Research Institute of Electrophysical Apparatus 189631 St. Petersburg RF, Russia;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    Peter the Great Saint Petersburg Polytechnic University, 195251, St. Petersburg, RF, Russia;

    Peter the Great Saint Petersburg Polytechnic University, 195251, St. Petersburg, RF, Russia;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    Peter the Great Saint Petersburg Polytechnic University, 195251, St. Petersburg, RF, Russia;

    ITER Organization, CS 90 046, 13067 St. Paul Lez Durance Cedex, France;

    Ioffe Institute, 194021, St. Petersburg, RF, Russia;

    Frumkin Institute of Physical Chemistry and Electrochemistry, 119071 Moscow, RF, Russia;

    ITER Organization, CS 90 046, 13067 St. Paul Lez Durance Cedex, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    tritium retention; fusion machines; in situ monitoring; local baking;

    机译:retention保留融合机;现场监测;本地烘烤;

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