Performance of several solid state photomultipliers with CLYC scintillator

Mesick, K. E.; Stonehill, L. C.; Morrell, Jonathan T.; Coupland, D.

doi:10.1109/nssmic.2015.7581936

Cited by 12 publications

(16 citation statements)

References 5 publications

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“…For CLYC, the FOM for neutron-gamma discrimination continues to improve at low temperatures. Similar results were obtained for a 1 cm 3 CLYC with a 6x6 mm 2 SiPM [6]. This behavior is not observed for CLLB and NaIL.…”

Section: B Pulse Shape Discriminationsupporting

confidence: 87%

“…However, at higher energies the neutron detection efficiency for NaIL is an order of magnitude lower than CLYC. At these energies, neutron capture by 6 Li competes more favorably than other elements in CLYC, therefore, the neutron detection efficiency is commensurate with the number density of 6 Li. Since it is promising to manufacture large size NaIL, this would help increase the neutron detection efficiency [4].…”

Section: Neutron Detection Efficiencymentioning

confidence: 95%

“…Some Li-loaded scintillators that are capable of detecting both neutrons and gamma-rays have generated considerable interest. When enriched 6 Li is used in these scintillators, the sensitivity for neutron detection can be comparable to or exceed 3 He tubes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Lithium-Loaded Scintillators Coupled to a Custom-Designed Silicon Photomultiplier Array for Neutron and Gamma-Ray Detection

Liang

Brands

Hoy

et al. 2018

IEEE Trans. Nucl. Sci.

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Scintillators capable of detecting both neutrons and gamma-rays have generated considerable interest. In particular, the use of such scintillators with silicon photomultipliers (SiPMs) enables low-power and compact-geometry applications. Three types of Li-loaded scintillators, CLYC, CLLB, and NaIL, have been tested with a custom-designed SiPM array for temperatures between -20 and 50 • C. The array consists of four 6x6 mm 2 SiPMs arranged in a 2x2 configuration. Pulse shape discrimination is used for neutron and gamma identification. Because the pulse shape changes with temperature, the quality of neutron and gamma discrimination varies with temperature. Furthermore, the larger dark current in SiPMs at high temperatures results in poorer energy resolution and neutron-gamma discrimination. Comparison of the energy resolution and the neutron-gamma discrimination for the three scintillators coupled to the custom SiPM array will be discussed.

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Section: B Pulse Shape Discriminationsupporting

confidence: 87%

Section: Neutron Detection Efficiencymentioning

confidence: 95%

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Lithium-Loaded Scintillators Coupled to a Custom-Designed Silicon Photomultiplier Array for Neutron and Gamma-Ray Detection

Liang

Brands

Hoy

et al. 2018

IEEE Trans. Nucl. Sci.

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“…A solution for the above limitations of the PMT is the use of the multipixel photon counter (MPPC), also known as silicon photomultiplier (SiPM), which is a new type of photosensor. The PSD performance of MPPCs was demonstrated to be comparable with that of a typical PMT in the n − γ discrimination using both organic [1] and inorganic [2], [3] scintillators. In this study, we evaluate the PSD performance of MPPCs and compare it with that of a PMT in chargedparticle discrimination using the CsI(Tl) scintillator.…”

Section: Introductionmentioning

confidence: 90%

Pulse Shape Discrimination of CsI(Tl) with Photomultiplier Tube and MPPCs

Viet

Kondo

Nomachi

et al. 2019

2019 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

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In this study, we evaluate and compare the pulse shape discrimination (PSD) performance of multipixel photon counters (MPPCs, also known as silicon photomultiphers-SiPMs) with that of a typical photomultiplier tube (PMT) when testing using CsI(Tl) scintillators. We use the charge comparison method, whereby we discriminate different types of particles by the ratio of charges integrated within two time-gates (the delayed part and the entire digitized waveform). For a satisfactory PSD performance, a setup should generate many photoelectrons (p.e.) and collect their charges efficiently. The PMT setup generates more p.e. than the MPPC setup does. With the same digitizer and the same long time-gate (the entire digitized waveform), the PMT setup is also better in charge collection. Therefore, the PMT setup demonstrates better PSD performance. We subsequently test the MPPC setup using a new data acquisition (DAQ) system. Using this new DAQ, the long time-gate is extended by nearly four times the length when using the previous digitizer. With this longer time-gate, we collect more p.e. at the tail part of the pulse and almost all the charges of the total collected p.e. Thus, the PSD performance of the MPPC setup is improved significantly. This study also provides an estimation of the short time-gate (the delayed part of the digitized waveform) that can give a satisfactory PSD performance without an extensive analysis to optimize this gate.

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“…Silicon photo-multipliers (SiPMs) offer similar gain and noise performance to traditional photo-multiplier tubes (PMTs), but are smaller and lighter weight, and require tens of volts of bias rather than kV-scale bias typical of PMTs. Newer SiPMs with good response at blue wavelengths have shown excellent performance with elpasolites [13].…”

Section: B Silicon Photomulipliersmentioning

confidence: 99%

Elpasolite Planetary Ice and Composition Spectrometer (EPICS): A Low-Resource Combined Gamma-Ray and Neutron Spectrometer for Planetary Science

Mesick

Stonehill

Coupland

et al. 2018

2018 IEEE Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC)

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Neutron and gamma-ray spectroscopy (NGRS) is a well established technique for studying the geochemical composition and volatile abundance relevant to planetary structure and evolution of planetary bodies. Previous NGRS instruments have used separate gamma-ray and neutron spectrometers. The Elpasolite Planetary Ice and Composition Spectrometer (EPICS) instrument is an innovative and fully integrated NGRS with low resource requirements. EPICS utilizes elpasolite scintillator read out by silicon photomultipliers to combine the gamma-ray and neutron spectrometer into a single instrument, leading to a significant reduction in instrument size, weight, and power. An overview and motivation for the EPICS instrument, current status of the EPICS development, and a discussion of the expected sensitivity and performance are presented.

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Performance of several solid state photomultipliers with CLYC scintillator

Cited by 12 publications

References 5 publications

Lithium-Loaded Scintillators Coupled to a Custom-Designed Silicon Photomultiplier Array for Neutron and Gamma-Ray Detection

Lithium-Loaded Scintillators Coupled to a Custom-Designed Silicon Photomultiplier Array for Neutron and Gamma-Ray Detection

Pulse Shape Discrimination of CsI(Tl) with Photomultiplier Tube and MPPCs

Elpasolite Planetary Ice and Composition Spectrometer (EPICS): A Low-Resource Combined Gamma-Ray and Neutron Spectrometer for Planetary Science

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