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Title: Velocity-space sensitivity of the time-of-flight neutron spectrometer at JET

The velocity-space sensitivities of fast-ion diagnostics are often described by so-called weight functions. Recently, we formulated weight functions showing the velocity-space sensitivity of the often dominant beam-target part of neutron energy spectra. These weight functions for neutron emission spectrometry (NES) are independent of the particular NES diagnostic. Here we apply these NES weight functions to the time-of-flight spectrometer TOFOR at JET. By taking the instrumental response function of TOFOR into account, we calculate time-of-flight NES weight functions that enable us to directly determine the velocity-space sensitivity of a given part of a measured time-of-flight spectrum from TOFOR.
Authors:
; ; ; ; ; ;  [1] ; ; ;  [2]
  1. Association Euratom - DTU, Technical University of Denmark, Department of Physics, Kgs. Lyngby (Denmark)
  2. Association Euratom - VR, Uppsala University, Department of Physics and Astronomy, Uppsala (Sweden)
Publication Date:
OSTI Identifier:
22308796
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 Euratom; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAMS; EMISSION SPECTROSCOPY; ENERGY SPECTRA; IONS; JET TOKAMAK; NEUTRON EMISSION; NEUTRON SPECTROMETERS; NEUTRON SPECTROSCOPY; RESPONSE FUNCTIONS; SENSITIVITY; TIME-OF-FLIGHT METHOD; TIME-OF-FLIGHT SPECTROMETERS; WEIGHTING FUNCTIONS