Title :
A study of 3He detectors for active interrogation
Author :
Seabury, E.H. ; Chichester, D.L.
Author_Institution :
Idaho Nat. Lab., Idaho Falls, ID, USA
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
He proportional counters have long been used as neutron detectors for both passive and active detection of Special Nuclear Material (SNM). The optimal configuration of these detectors as far as gas pressure, amount of moderating material, and size are concerned is highly dependent on what neutron signatures are being used to detect and identify SNM. We present here a parametric study of the neutron capture response of 3He detectors, based on Monte Carlo simulations using the MCNPX radiation transport code. The neutron capture response of the detectors has been modeled as a function of time after an incident neutron pulse.
Keywords :
Monte Carlo methods; helium-3 counters; neutron detection; position sensitive particle detectors; MCNPX radiation transport code; Monte Carlo simulations; SNM; Special Nuclear Material; gas pressure; helium detectors; helium proportional counters; neutron capture response; neutron detectors; neutron pulse; Counting circuits; Geometry; Laboratories; Neutrons; Nuclear and plasma sciences; Parametric study; Pulse generation; Radiation detectors; Time measurement; Toxicology;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5402101
