ALL libraries (COBIB.SI union bibliographic/catalogue database)
  • Fusion yield measurements on JET and their calibration
    Syme, D.B. ...
    The power output of fusion experiments and fusion reactor-like devices isA new, more detailed, calibration is being provided by means of an engineering programme of development of the robotic tools ... which will allow safe and accurate deployment of a strong 252Cf source for the measurements. It is led by a scientific programme which seeks to better understand the limitations of the calibration, to optimise the measurements and other provisions, to providecorrections for perturbing factors and to ensure personnel safety and safe working conditions. Much of this work is based on an extensive programme of Monte-Carlo calculations. These include the updating of previous JET modelsto provide continuity of comparison with previous understanding, the provision of fast models for side effect estimation and the development of a new more detailed JET model which will allow comparisons with the older more homogeneous model while coping with the demands of the new calibration. measured in terms of the neutron emission rates which relate directly to the fusionyield rate. Determination of such parameters requires a set of absolutely calibrated neutron detectors. At JET, the Fission Chamber neutron detectors were originally calibrated some 20 years ago by performing a set of in-situ calibrations using neutron sources and the absolute calibration has been maintained since then by cross calibrations against Activation System measurements. After this elapsed time and a succession of changes to the internal and external JET structures, the JET neutron yield calibration needs re-measurement. The purpose of this paper is to give an overview of the arrangements being developed to allow a new calibration to be made.
    Source: Selected and expanded papers from International Conference Nuclear Energy for new Europe 2010, Portorož, September 6-9, 2010 (Vol. 246, 2012, str. 185-190)
    Type of material - conference contribution
    Publish date - 2012
    Language - english
    COBISS.SI-ID - 25476647
    DOI

Shelf entry