Compact readout of large CLYC scintillators with silicon photomultipler arrays

Stephen West, Darrel Beckman, Daniel Coupland, Nicholas Dallmann, Craig Hardgrove, Katherine Mesick, Laura Stonehill

Research output: Contribution to journalArticle

Abstract

Compact readout of a large (5×5×5 cm3) CLYC scintillator was demonstrated with a 8×8 array of 6mm silicon photomultipliers (SiPMs, specifically, a SensL ArrayJ-60035-64P) and an optimized amplification and summing circuit. Read out by the SiPM array, the crystal yielded an energy resolution of 5.5% at 662 keV and a figure of merit of 3.5, equivalent to the performance achieved with a 3-inch Hamamatsu R6233-100 PMT. To reduce channel count and avoid individual amplification of each SiPM in the array, the standard outputs of 16 SiPMs were passively summed then amplified. A current feedback amplifier was used for each channel to provide the required fast response time. The four amplified channels were then passively summed resulting in a single signal channel. A custom laboratory setup, based on the PSD8C ASIC, was used to capture the output and provide time-gated integration for PSD computation. The compact volume, low bias voltage, and reduced mass of the SiPM array readout are desirable for space and national security applications.

Fingerprint

Phosphors
scintillation counters
Summing circuits
Amplification
readout
Feedback amplifiers
Silicon
National security
Photomultipliers
silicon
Application specific integrated circuits
Bias voltage
feedback amplifiers
current amplifiers
Crystals
output
application specific integrated circuits
figure of merit
electric potential
crystals

Keywords

  • CLYC
  • Readout electronics
  • Silicon photomultipliers

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

Compact readout of large CLYC scintillators with silicon photomultipler arrays. / West, Stephen; Beckman, Darrel; Coupland, Daniel; Dallmann, Nicholas; Hardgrove, Craig; Mesick, Katherine; Stonehill, Laura.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 951, 162928, 21.01.2020.

Research output: Contribution to journalArticle

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AU - Beckman, Darrel

AU - Coupland, Daniel

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AU - Hardgrove, Craig

AU - Mesick, Katherine

AU - Stonehill, Laura

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