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Accelerating fissile material detection with a neutron source

Patent ·
OSTI ID:1600204
;

A neutron detector system for discriminating fissile material from non-fissile material wherein a digital data acquisition unit collects data at high rate, and in real-time processes large volumes of data directly to count neutrons from the unknown source and detecting excess grouped neutrons to identify fission in the unknown source. The system includes a Poisson neutron generator for in-beam interrogation of a possible fissile neutron source and a DC power supply that exhibits electrical ripple on the order of less than one part per million. Certain voltage multiplier circuits, such as Cockroft-Walton voltage multipliers, are used to enhance the effective of series resistor-inductor circuits components to reduce the ripple associated with traditional AC rectified, high voltage DC power supplies.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
10,451,749
Application Number:
15/419,916
OSTI ID:
1600204
Country of Publication:
United States
Language:
English

References (2)

Physical description of nuclear materials identification system (NMIS) signatures
  • Mihalczo, J. T.; Mullens, J. A.; Mattingly, J. K.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 450, Issue 2-3, p. 531-555 https://doi.org/10.1016/S0168-9002(00)00304-1
journal August 2000
Cosmic-ray-induced ship-effect neutron measurements and implications for cargo scanning at borders
  • Kouzes, Richard T.; Ely, James H.; Seifert, Allen
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 587, Issue 1, p. 89-100 https://doi.org/10.1016/j.nima.2007.12.031
journal March 2008

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