Scintillating Fibre Neutron Spectrometer

  • T. Elevant
  • R. Chakarova
  • J. Karlsson

Abstract

A neutron spectrometer consisting of a number of square shaped hydrogen based scintillating fibres is described. The considered design will have an efficiency of 3·10-3 cm2 for 14-MeV neutrons and is suitable for measurements of energy spectra of collimated fluxes ranging from 106 to 108 n/(cm2s). The energy resolution is ≅ 3.3% (FWHM) which permits ion temperature measurements for Ti ≥ 7 keV with ΔTi/Ti≤ 10%. The detector has high efficiency that makes it particularly useful for measurements of energy spectra of collimated neutron beams in a radial profile monitor in ITER. The objective of these measurements is to evaluate ion temperature radial profiles. A time resolution of 100 - 1 ms and a radial resolution of 1–3 cm is provided.

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References

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Copyright information

© Plenum Press, New York 1996

Authors and Affiliations

  • T. Elevant
    • 1
  • R. Chakarova
    • 2
  • J. Karlsson
    • 2
  1. 1.Alfvén Laboratory, Royal Institute of TechnologyEURATOM/NFR Fusion AssociationStockholmSweden
  2. 2.Dep. of Reactor Physics, Chalmers University of TechnologyEURATOM/NFR Fusion AssociationGöteborgSweden

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