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Title: Calibration of a compact ASIC-based data acquisition system for neutron/$$γ$$ discrimination and spectroscopy with organic scintillators

Abstract

Segmented neutron detectors that use silicon photomultipliers (SiPMs) are receiving significant attention in nuclear security applications. Some of these detectors employ hundreds of channels and would therefore benefit from the use of high-channel-density and low-cost-per-channel data acquisition (DAQ) systems. Candidate DAQ systems that meet these requirements exist, but few perform full waveform digitization, which permits neutron and gamma-ray interaction discrimination via pulse shape. In this work, we study the performance of the TOFPET2 (PETsys Electronics), an ASIC-based DAQ designed for positron emission tomography, which has been adapted to provide sensitivity to pulse shape by the use of variable-period charge integration. We use a light-emitting diode to calibrate a combination of an ON Semiconductor (SensL) 60035-64P J-Series SiPM and TOPFET2 DAQ and evaluate the linearity of their response and dynamic range. Here, the calibration curve was obtained by comparing the DAQ response to that measured with a photodiode interfaced with a traditional waveform digitizer. This calibration process was used for rudimentary spectroscopy of various neutron and sources.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2];  [2]; ORCiD logo [1]
+ Show Author Affiliations
  1. University of Michigan, Ann Arbor, MI (United States)
  2. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
2203653
Alternate Identifier(s):
OSTI ID: 2007229; OSTI ID: 2246711
Report Number(s):
LLNL-JRNL-848338
Journal ID: ISSN 0168-9002
Grant/Contract Number:  
NA0003920; AC52-07NA27344; NE000863; LLNL-JRNL-848338
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 Volume: 1057; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; fast-neutron detection; pulse-shape discrimination; SiPM readout

Citation Formats

Wu, T. C., Sutanto, F., Li, V. A., Classen, T. M., Dazeley, S., and Jovanovic, I. Calibration of a compact ASIC-based data acquisition system for neutron/$γ$ discrimination and spectroscopy with organic scintillators. United States: N. p., 2023. Web. doi:10.1016/j.nima.2023.168699.
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Wu, T. C., Sutanto, F., Li, V. A., Classen, T. M., Dazeley, S., & Jovanovic, I. Calibration of a compact ASIC-based data acquisition system for neutron/$γ$ discrimination and spectroscopy with organic scintillators. United States. https://doi.org/10.1016/j.nima.2023.168699
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Wu, T. C., Sutanto, F., Li, V. A., Classen, T. M., Dazeley, S., and Jovanovic, I. Wed . "Calibration of a compact ASIC-based data acquisition system for neutron/$γ$ discrimination and spectroscopy with organic scintillators". United States. https://doi.org/10.1016/j.nima.2023.168699.
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@article{osti_2203653,
title = {Calibration of a compact ASIC-based data acquisition system for neutron/$γ$ discrimination and spectroscopy with organic scintillators},
author = {Wu, T. C. and Sutanto, F. and Li, V. A. and Classen, T. M. and Dazeley, S. and Jovanovic, I.},
abstractNote = {Segmented neutron detectors that use silicon photomultipliers (SiPMs) are receiving significant attention in nuclear security applications. Some of these detectors employ hundreds of channels and would therefore benefit from the use of high-channel-density and low-cost-per-channel data acquisition (DAQ) systems. Candidate DAQ systems that meet these requirements exist, but few perform full waveform digitization, which permits neutron and gamma-ray interaction discrimination via pulse shape. In this work, we study the performance of the TOFPET2 (PETsys Electronics), an ASIC-based DAQ designed for positron emission tomography, which has been adapted to provide sensitivity to pulse shape by the use of variable-period charge integration. We use a light-emitting diode to calibrate a combination of an ON Semiconductor (SensL) 60035-64P J-Series SiPM and TOPFET2 DAQ and evaluate the linearity of their response and dynamic range. Here, the calibration curve was obtained by comparing the DAQ response to that measured with a photodiode interfaced with a traditional waveform digitizer. This calibration process was used for rudimentary spectroscopy of various neutron and sources.},
doi = {10.1016/j.nima.2023.168699},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = ,
volume = 1057,
place = {United States},
year = {Wed Sep 20 00:00:00 EDT 2023},
month = {Wed Sep 20 00:00:00 EDT 2023}
}
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Journal Article:
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This content will become publicly available on September 20, 2024
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https://doi.org/10.1016/j.nima.2023.168699
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