Compact Back-End Electronics with Temperature Compensation and Efficient Data Management for In Situ SiPM-Based Radiation Detection

Dixon, Nile and Monk, Stephen and Graham, James and Cheneler, David (2023) Compact Back-End Electronics with Temperature Compensation and Efficient Data Management for In Situ SiPM-Based Radiation Detection. Sensors, 23 (8): 4053. ISSN 1424-8220

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Abstract

A compact back-end interface for silicon photomultipliers (SiPMs) implementing Zener diode-based temperature compensation has been developed for the remote detection of beta and gamma radiation. Remote detection is facilitated by the development of an efficient data management system utilising MySQL database storage for recording periodic spectra data for wireless access over a private Wi-Fi network. A trapezoidal peak shaping algorithm has been implemented on an FPGA for the continuous conversation of pulses from the SiPM, signifying the detection of a radiological particle, into spectra. This system has been designed to fit within a 46 mm cylindrical diameter for in situ characterization, and can be attached to one or more SiPMs used in conjunction with a range of scintillators. LED blink tests have been used to optimise the trapezoidal shaper coefficients to maximise the resolution of the recorded spectra. Experiments with an array of SiPMs integrated with a NaI(Tl) scintillator exposed to sealed sources of Co-60, Cs-137, Na-22 and Am-241 have shown that the detector achieves a peak efficiency of 27.09 ± 0.13% for a gamma peak at 59.54 keV produced by Am-241, and a minimum energy resolution (Delta E/E) of 4.27 ± 1.16% for the 1332.5 keV gamma peak from Co-60.

Item Type:
Journal Article
Journal or Publication Title:
Sensors
Uncontrolled Keywords:
Research Output Funding/yes_externally_funded
Subjects:
?? silicon photomultipliergamma detectorstemperature compensationwireless data acquisition systemsyes - externally fundednobiochemistryatomic and molecular physics, and opticsanalytical chemistryelectrical and electronic engineering ??
ID Code:
191453
Deposited By:
Deposited On:
17 Apr 2023 15:00
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2024 23:44