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Title: Accelerating fissile material detection with a neutron source

Patent ·
OSTI ID:1418841

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):
9,880,300
Application Number:
14/213,502
OSTI ID:
1418841
Resource Relation:
Patent File Date: 2014 Mar 14
Country of Publication:
United States
Language:
English

References (4)

Method And Apparatus For Nuclear Fuel Assay With A Neutron Source And Coincident Fission Neutron Detectors patent January 1974
Nonintrusive method for the detection of concealed special nuclear material patent December 2006
Fiber optic thermal/fast neutron and gamma ray scintillation detector patent-application March 2007
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