First demonstration of a Compton gamma imager based on silicon photomultipliers

Saull, P. R. B.; Sinclair, L.E.; Seywerd, H.; Hanna, D.; Boyle, P.J.; MacLeod, A.M.L.

doi:10.1016/j.nima.2012.03.019

Cited by 27 publications

(18 citation statements)

References 15 publications

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“…The motivation for developing this instrument was to aid in the deployment of a Compton imager [1][2][3][4]. A design specification for that imager was to locate a 10 mCi point source at a distance of 40 m to within a degree within one minute.…”

Section: Behavior At Greater Distancesmentioning

confidence: 99%

“…During the development of a Compton imager for safety and security applications [1][2][3][4] we became interested in the idea of using a simple detector to establish an approximate (751) direction to the source of gamma radiation that was to be imaged. (The Compton imager had a field of view that extended 7451 in azimuth and 7201 in the vertical direction.)…”

Section: Introductionmentioning

confidence: 99%

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A directional gamma-ray detector based on scintillator plates

Hanna

Sagnières

Boyle

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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a b s t r a c tA simple device for determining the azimuthal location of a source of gamma radiation, using ideas from astrophysical gamma-ray burst detection, is described. A compact and robust detector built from eight identical modules, each comprising a plate of CsI(Tl) scintillator coupled to a photomultiplier tube, can locate a point source of gamma rays with degree-scale precision by comparing the count rates in the different modules. Sensitivity to uniform environmental background is minimal.

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Section: Behavior At Greater Distancesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A directional gamma-ray detector based on scintillator plates

Hanna

Sagnières

Boyle

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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“…2 d), provide both the SiPM bias voltage and pre-amplification. Further details are available in [15].…”

Section: ) Electronicsmentioning

confidence: 99%

“…Moreover, the recent development of very small and low-mass silicon photomultipliers (SiPMs) [12]- [14] permits the collection of light from within a layered Compton gamma imager, with negligible scattering induced in the dead material of the light collection device [15].…”

Section: Introductionmentioning

confidence: 99%

Silicon Photomultiplier-Based Compton Telescope for Safety and Security (SCoTSS)

Sinclair

Saull

Hanna

et al. 2014

IEEE Trans. Nucl. Sci.

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Abstract-A Compton gamma imager has been developed for use in consequence management operations and in security investigations. The imager uses solid inorganic scintillator, known for robust performance in field survey conditions. The design was constrained in overall size by the requirement that it be person transportable and operable from a variety of platforms. In order to introduce minimal dead material in the path of the incoming and scattered gamma rays, custom silicon photomultipliers (SiPMs), with a thin glass substrate, were used to collect the scintillation light from the scatter layers. To move them out of the path of the gamma rays, preamplification electronics for the silicon photomultipliers were located a distance from the imager. This imager, the Silicon photomultiplier Compton Telescope for Safety and Security (SCoTSS) is able to provide a one-degree image resolution in a ±45• field of view for a 10 mCi point source 40 m distant, within about one minute, for gamma-ray energies ranging from 344 keV to 1274 keV. Here, we present a comprehensive performance study of the SCoTSS imager.

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“…Scintillator-based Compton cameras with SiPM readouts are already being developed by multiple groups for medical imaging applications 14,15 .…”

Section: Introductionmentioning

confidence: 99%

Scintillator gamma-ray detectors with silicon photomultiplier readouts for high-energy astronomy

et al. 2013

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Space-based gamma-ray detectors for high-energy astronomy face strict constraints of mass, volume, and power, and must endure harsh operating environments. Scintillator materials have a long history of successful operation under these conditions, and new materials offer greatly improved performance in terms of efficiency, time response, and energy resolution. The use of scintillators in space remains constrained, however, by the mass, volume, and fragility of the associated light readout device, typically a vacuum photomultiplier tube (PMT). Recently developed silicon photomultipliers (SiPMs) offer gains and efficiencies similar to those of PMTs, but with greatly reduced mass and volume, high ruggedness, and no high-voltage requirements. We have therefore been investigating the use of SiPM readouts for scintillator gamma-ray detectors, with an emphasis on their suitability for space-and balloonbased instruments for high-energy astronomy. We present our most recent results, including spectroscopy measurements for lanthanum bromide scintillators with SiPM readouts, and pulse-shape discrimination using organic scintillators with SiPM readouts. We also describe potential applications of SiPM readouts to specific highenergy astronomy instrument concepts.

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First demonstration of a Compton gamma imager based on silicon photomultipliers

Cited by 27 publications

References 15 publications

A directional gamma-ray detector based on scintillator plates

A directional gamma-ray detector based on scintillator plates

Silicon Photomultiplier-Based Compton Telescope for Safety and Security (SCoTSS)

Scintillator gamma-ray detectors with silicon photomultiplier readouts for high-energy astronomy

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