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Деканат Физика

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Research paper thumbnail of Influence of SiPM Single Photon Timing Resolution on Coincidence Timing Resolution with Fast Scintillator

A coincidence timing resolution (CTR) of scintillation detectors based on SiPMs depends on both p... more A coincidence timing resolution (CTR) of scintillation detectors based on SiPMs depends on both photodetector and scintillator properties. The photodetectorrelated contribution is very important and has a considerable impact on the CTR. The CTR dependence on photon detection efficiency (PDE) is well studied and clarified, but as soon as advances in developments of fast scintillators and fast SiPMs make CTR approaching to a fundamental limit, a role of a single photon timing resolution (SPTR) is increased, and it requires more attention and studies. This study presents results of CTR measurements of LYSO crystals with "old" standard and timing optimized KETEK SiPM samples of 3x3 mm 2 size obtained with developed digital signal processing. To complement and extend the studies on LYSO CTR with analysis on how SPTR affects multi-photon timing resolution (MPTR) with different light intensity profiles, experiments with different light sources were carried out and results were compared with an analytical model of SiPM timing resolution.

Research paper thumbnail of Influence of SiPM Single Photon Timing Resolution on Coincidence Timing Resolution with Fast Scintillator

A coincidence timing resolution (CTR) of scintillation detectors based on SiPMs depends on both p... more A coincidence timing resolution (CTR) of scintillation detectors based on SiPMs depends on both photodetector and scintillator properties. The photodetectorrelated contribution is very important and has a considerable impact on the CTR. The CTR dependence on photon detection efficiency (PDE) is well studied and clarified, but as soon as advances in developments of fast scintillators and fast SiPMs make CTR approaching to a fundamental limit, a role of a single photon timing resolution (SPTR) is increased, and it requires more attention and studies. This study presents results of CTR measurements of LYSO crystals with "old" standard and timing optimized KETEK SiPM samples of 3x3 mm 2 size obtained with developed digital signal processing. To complement and extend the studies on LYSO CTR with analysis on how SPTR affects multi-photon timing resolution (MPTR) with different light intensity profiles, experiments with different light sources were carried out and results were compared with an analytical model of SiPM timing resolution.

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