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NEUTRON MEASUREMENT APPARATUS AND NEUTRON MEASUREMENT METHOD

  • US 20130221231A1
  • Filed: 02/28/2013
  • Published: 08/29/2013
  • Est. Priority Date: 02/29/2012
  • Status: Active Grant
First Claim
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1. A neutron measurement apparatus comprising:

  • an analogue signal processing system configured to amplify alternating current components of detector output signals output from a neutron detector, and to apply filtering to remove high frequency components from the output signals;

    a digitizing processing system configured to digitize the output signals output from the analogue signal processing system at a constant sampling period in a time series;

    a FFT calculation processing system configured to convert a certain number of the signals in a time domain output from the digitizing processing system into signals in a frequency domain, and to apply filtering to the signals in the frequency domain; and

    a signal processing system configured to select and extract signals having required frequency components through the calculation processing on the FFT calculation processing system, so as to calculate power spectral densities of the extracted signals, and to convert the calculated power spectral densities into a neutron measurement value.

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