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Fcas fast carton assay system

FCAS

Fast Carton Assay System

The Fast Carton Assay System (FCAS) is a multi-purpose neutron coincidence counter designed for measuring the multiplicity of the neutron emission from both spontaneous fission and induced-fission reaction in plutonium and uranium.

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Data Sheet

Tag Features

  • Delivers reliable quantitative passive neutron analysis
  • High Efficiency for Precise Measurements: 40% for 240Pu spontaneous fission neutrons
  • Fast Die-Away Time: 50 μsec and low dead-time (75 nanoseconds) enable rapid, high-precision measurements with minimal data loss
  • Large Sample Cavity for Increased Operational
  • Flexibility: accommodates samples up to 40 liters
  • Fast electronics provides improved performance
  • Internal De-randomizing Board: ensures accurate event timing, reducing dead-time
  • Operated using JSR-15 shift registers
  • Cf-252 based Add-A-Source Matrix Correction Option
  • Available with NDA 2000 software, compatible with all Mirion neutron counters and gamma-ray systems

Description

Developed to measure impure plutonium and mixed-oxide (MOX) scrap materials and waste materials for safeguards and inventory control applications, the FCAS is intended for measurement of items up to 40 liters (10 gallon) in volume, providing high measurement precision through the use of Cadmium layers and high pressure (4.5 atm.) 3He proportional tubes. For containers with non-negligible moderator content, the FCAS provides for a manually operated Cf-252 Add-A-Source option for moderator corrections.

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