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Title: Comparison Between Digital and Analog Pulse Shape Discrimination Techniques For Neutron and Gamma Ray Separation

Abstract

Recent advancement in digital signal processing (DSP) using fast processors and computer makes it possible to be used in pulse shape discrimination applications. In this study, we have investigated the feasibility of using a DSP to distinguish between the neutrons and gamma rays by the shape of their pulses in a liquid scintillator detector (BC501), and have investigated pulse shape-based techniques to improve the resolution performance of room-temperature cadmium zinc telluride (CZT) detectors. For the neutron/gamma discrimination, the advantage of using a DSP over the analog method is that in analog system two separate charge-sensitive ADC's are required. One ADC is used to integrate the beginning of the pulse risetime while the second ADC is for integrating the tail part. Using a DSP eliminates the need for separate ADCs as one can easily get the integration of two parts of the pulse from the digital waveforms. This work describes the performance of these DSP techniques and compares the results with the analog method.

Authors:
;
Publication Date:
Research Org.:
Idaho National Laboratory (INL)
Sponsoring Org.:
USDOE
OSTI Identifier:
911616
Report Number(s):
INL/CON-05-00284
TRN: US0800043
DOE Contract Number:  
DE-AC07-99ID-13727
Resource Type:
Conference
Resource Relation:
Journal Volume: 1; Conference: IEEE Nuclear Science Symposium,Puerto Rico,10/23/2005,10/30/2005
Country of Publication:
United States
Language:
English
Subject:
46 - INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ANALOG SYSTEMS; CADMIUM; COMPUTERS; LIQUID SCINTILLATORS; NEUTRONS; PERFORMANCE; PROCESSING; RESOLUTION; SHAPE; WAVE FORMS; ZINC TELLURIDES; Gamma rays; Neutron; Radiation detection

Citation Formats

R. Aryaeinejad, and John K. Hartwell. Comparison Between Digital and Analog Pulse Shape Discrimination Techniques For Neutron and Gamma Ray Separation. United States: N. p., 2005. Web. doi:10.1109/NSSMIC.2005.1596302.
R. Aryaeinejad, & John K. Hartwell. Comparison Between Digital and Analog Pulse Shape Discrimination Techniques For Neutron and Gamma Ray Separation. United States. doi:10.1109/NSSMIC.2005.1596302.
R. Aryaeinejad, and John K. Hartwell. Tue . "Comparison Between Digital and Analog Pulse Shape Discrimination Techniques For Neutron and Gamma Ray Separation". United States. doi:10.1109/NSSMIC.2005.1596302. https://www.osti.gov/servlets/purl/911616.
@article{osti_911616,
title = {Comparison Between Digital and Analog Pulse Shape Discrimination Techniques For Neutron and Gamma Ray Separation},
author = {R. Aryaeinejad and John K. Hartwell},
abstractNote = {Recent advancement in digital signal processing (DSP) using fast processors and computer makes it possible to be used in pulse shape discrimination applications. In this study, we have investigated the feasibility of using a DSP to distinguish between the neutrons and gamma rays by the shape of their pulses in a liquid scintillator detector (BC501), and have investigated pulse shape-based techniques to improve the resolution performance of room-temperature cadmium zinc telluride (CZT) detectors. For the neutron/gamma discrimination, the advantage of using a DSP over the analog method is that in analog system two separate charge-sensitive ADC's are required. One ADC is used to integrate the beginning of the pulse risetime while the second ADC is for integrating the tail part. Using a DSP eliminates the need for separate ADCs as one can easily get the integration of two parts of the pulse from the digital waveforms. This work describes the performance of these DSP techniques and compares the results with the analog method.},
doi = {10.1109/NSSMIC.2005.1596302},
journal = {},
number = ,
volume = 1,
place = {United States},
year = {Tue Nov 01 00:00:00 EST 2005},
month = {Tue Nov 01 00:00:00 EST 2005}
}

Conference:
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