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Studies in pulse shape discrimination for an optimized ASIC design

Journal Article · · Journal of Instrumentation
 [1];  [1];  [2];  [1];  [1];  [1]
  1. University of California, Davis, CA (United States)
  2. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
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The continued advancements of Silicon Photomultipliers (SiPMs) have made them viable photosensors for low recoil energy Pulse Shape Discrimination (PSD) between fast neutron and gamma interactions when coupled to an appropriate scintillator. At the same time, the large number of channels in a typical array calls for the development of low-cost and low-power electronics. A custom integrated circuit (ASIC) is an ideal solution for this purpose. To assess the requirements for such an ASIC, studies were performed using two scintillators, Stilbene and EJ-276, coupled to a 6 x 6 mm SiPM from Onsemi. We demonstrate that both scintillators are viable for performing PSD for interaction energies from 100 keV to several MeV while optimizing the integration periods used in the PSD metric. These measurements inform the design parameters of the ASIC under development.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-05CH11231; NA0000979
OSTI ID:
1974758
Journal Information:
Journal of Instrumentation, Journal Name: Journal of Instrumentation Journal Issue: 01 Vol. 18; ISSN 1748-0221
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

References (6)

Plastic scintillators with efficient neutron/gamma pulse shape discrimination
  • Zaitseva, Natalia; Rupert, Benjamin L.; PaweŁczak, Iwona
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 668, p. 88-93 https://doi.org/10.1016/j.nima.2011.11.071
journal March 2012
Characteristics of a stilbene scintillation crystal in a neutron spectrometer journal November 2013
SciPy 1.0: fundamental algorithms for scientific computing in Python journal February 2020
Fast neutron and gamma ray pulse shape discrimination in EJ-276 and EJ-276G plastic scintillators journal March 2020
Performance of digital algorithms for n//spl gamma/ pulse shape discrimination using a liquid scintillation detector conference January 2003
Pulse Shape Discrimination in a Plastic Scintillator journal June 1960

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Si-PMTs
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APDs
CCDs
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EBCCDs
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gas scintillators
liquid scintillators
photon detectors for UV
scintillation and light emission processes
scintillators
solid scintillators
solid-state
visible and IR photons