In-the-flash pulse shape discrimination with liquid scintillators

R. B. Williams, B. W. Blackburn, P. Hausladen, A. W. Hunt, J. T. Johnson, J. L. Jones, J. T. Mihalczo, C. E. Moss, K. D. Ianakiev

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Single neutron and gamma charge pulses were captured using a fast ADC. These data were used to populatesimulated 5-fJS active interrogation nash events. Analysis of these simulations revealed that long pulse tail accumulation during the nash leads to an unpredictable charge background for several microseconds after the nash. The existence of this changing background will make retrieving prompt neutron information immediately after the nash problematic. The tail accumulation is accentuated for every pulse in the nash, making the time just after the last pulse in the nash the worst possible time to measure prompt neutron data. Obtaining prompt neutron data during the nash-particularly near the beginning of the nash, where background tail accumulation is minimal-is feasible if shielding is used to control the count rates, but requires fast gamma-neutron pulse shape discrimination. A means of accentuating the pulse shape difference between neutron and gamma data is given, along with a means of compensating for the long pulse components in thedominant gamma pulses.

Original languageEnglish
Title of host publication2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Pages2087-2090
Number of pages4
DOIs
StatePublished - 2008
Event2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008 - Dresden, Germany
Duration: Oct 19 2008Oct 25 2008

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Conference

Conference2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Country/TerritoryGermany
CityDresden
Period10/19/0810/25/08

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