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Title: Investigating the non-ideal behavior of the Amptek A111 charge sensitive preamplifier & discriminator board— 3He proportional counter combination used in common safeguards neutron coincidence counters

Abstract

Neutron coincidence counting is a well-established technique used for the nondestructive quantification of specialnuclear material during international safeguards inspections. The neutron counters are commonly designedwith an annular body, centered about an inner well or cavity into which a measurement item is placed,and the moderating annulus is populated with 3He tubes connected to a varying number of preamplifiers.The Canberra Industries JAB-01 preamplifier/amplifier/discriminator board is employed within the company’sneutron coincidence counters, built for use by the International Atomic Energy Agency. Non-ideal behavior ofthese boards was identified during a detector characterization, using list mode data acquisition, of a CanberraIndustries JCC-71 Neutron Coincidence Collar implementing four JAB-01 boards. List mode data acquisition andanalysis reveals features that have commonly been overlooked by historic timing gate selection while using shiftregister data acquisition methods, which are routinely adopted in international safeguards. It has been shownthat double pulsing effects are not fully captured within the predelay setting; therefore, they may influencethe response of the system within the standard operating regime. We set out to identify and correct for doublepulsing in our post analysis of neutron pulse trains, while isolating this behavior to the relevant system. Tounderstand and potentially address these concerns, the responses of two different JAB-01 boardmore » systems – theJCC-71 Neutron Coincidence Collar and a modified JCC-51 Active Well Neutron Coincidence Counter – arecompared with the responses of an AnTech Inc. N2071 Neutron Coincidence Collar that also uses an amplifierbuilt on the Amptek A111 Charge Sensitive Preamplifier & Discriminator chip, and a JCC-71 that employs custompreamplifiers designed at Oak Ridge National Laboratory« less

Authors:
 [1];  [2]; ORCiD logo [2];  [2]; ORCiD logo [2];  [1]
  1. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Univ. of California, Berkeley, CA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Nonproliferation and Verification Research and Development (NA-22)
Contributing Org.:
Nuclear Science and Security Consortium
OSTI Identifier:
1544565
Alternate Identifier(s):
OSTI ID: 1558565
Grant/Contract Number:  
NA0003180; AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Simone, Angela T., Croft, Stephen, Britton, Charles L., McElroy, Robert D., Ericson, Milton Nance, and Hayward, Jason P. Investigating the non-ideal behavior of the Amptek A111 charge sensitive preamplifier & discriminator board—3He proportional counter combination used in common safeguards neutron coincidence counters. United States: N. p., 2018. Web. doi:10.1016/j.nima.2018.10.033.
Simone, Angela T., Croft, Stephen, Britton, Charles L., McElroy, Robert D., Ericson, Milton Nance, & Hayward, Jason P. Investigating the non-ideal behavior of the Amptek A111 charge sensitive preamplifier & discriminator board—3He proportional counter combination used in common safeguards neutron coincidence counters. United States. doi:10.1016/j.nima.2018.10.033.
Simone, Angela T., Croft, Stephen, Britton, Charles L., McElroy, Robert D., Ericson, Milton Nance, and Hayward, Jason P. Fri . "Investigating the non-ideal behavior of the Amptek A111 charge sensitive preamplifier & discriminator board—3He proportional counter combination used in common safeguards neutron coincidence counters". United States. doi:10.1016/j.nima.2018.10.033. https://www.osti.gov/servlets/purl/1544565.
@article{osti_1544565,
title = {Investigating the non-ideal behavior of the Amptek A111 charge sensitive preamplifier & discriminator board—3He proportional counter combination used in common safeguards neutron coincidence counters},
author = {Simone, Angela T. and Croft, Stephen and Britton, Charles L. and McElroy, Robert D. and Ericson, Milton Nance and Hayward, Jason P.},
abstractNote = {Neutron coincidence counting is a well-established technique used for the nondestructive quantification of specialnuclear material during international safeguards inspections. The neutron counters are commonly designedwith an annular body, centered about an inner well or cavity into which a measurement item is placed,and the moderating annulus is populated with 3He tubes connected to a varying number of preamplifiers.The Canberra Industries JAB-01 preamplifier/amplifier/discriminator board is employed within the company’sneutron coincidence counters, built for use by the International Atomic Energy Agency. Non-ideal behavior ofthese boards was identified during a detector characterization, using list mode data acquisition, of a CanberraIndustries JCC-71 Neutron Coincidence Collar implementing four JAB-01 boards. List mode data acquisition andanalysis reveals features that have commonly been overlooked by historic timing gate selection while using shiftregister data acquisition methods, which are routinely adopted in international safeguards. It has been shownthat double pulsing effects are not fully captured within the predelay setting; therefore, they may influencethe response of the system within the standard operating regime. We set out to identify and correct for doublepulsing in our post analysis of neutron pulse trains, while isolating this behavior to the relevant system. Tounderstand and potentially address these concerns, the responses of two different JAB-01 board systems – theJCC-71 Neutron Coincidence Collar and a modified JCC-51 Active Well Neutron Coincidence Counter – arecompared with the responses of an AnTech Inc. N2071 Neutron Coincidence Collar that also uses an amplifierbuilt on the Amptek A111 Charge Sensitive Preamplifier & Discriminator chip, and a JCC-71 that employs custompreamplifiers designed at Oak Ridge National Laboratory},
doi = {10.1016/j.nima.2018.10.033},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {10}
}

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