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An instrument for measuring scintillators efficiently based on silicon photomultipliers.
- Source :
- Review of Scientific Instruments; Nov2016, Vol. 87 Issue 11, p113308-1-113308-7, 7p, 3 Diagrams, 2 Charts, 4 Graphs
- Publication Year :
- 2016
-
Abstract
- An instrument used for measuring multiple scintillators' light output and energy resolution was developed. The instrument consisted of a light sensor array which was composed of 64 discrete SiPMs (Silicon Photomultipliers), a corresponding individual channel readout electronics system, and a data processing algorithm. A Teflon grid and a large interval between adjacent SiPMs were employed to eliminate the optical cross talk among scintillators. The scintillators' light output was obtained by comparing with a reference sample with known light output. Given the SiPM temperature dependency and the difference among each SiPM, a temperature offset correction algorithm and a non-uniformity correction algorithm were added to the instrument. A positioning algorithm, based on nine points, was designed to evaluate the performance of a scintillator array. Tests were performed to evaluate the instrument's performance. The uniformity of 64 channels for light output measurement was better than 98%, the stability was better than 98% when temperature varied from 15 °C to 40 °C, and the nonlinearity under 511 keV was better than 2%. This instrument was capable of selecting scintillators and evaluating the packaging technology of scintillator arrays with high efficiency and accuracy. [ABSTRACT FROM AUTHOR]
- Subjects :
- SCINTILLATORS
PHOTOMULTIPLIERS
SENSOR arrays
PUNCHED card systems
UNIFORMITY
Subjects
Details
- Language :
- English
- ISSN :
- 00346748
- Volume :
- 87
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Review of Scientific Instruments
- Publication Type :
- Academic Journal
- Accession number :
- 119959118
- Full Text :
- https://doi.org/10.1063/1.4968563