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Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 115: Detectors 10 (semiconductors)

T 115.5: Talk

Friday, March 8, 2024, 10:00–10:15, Geb. 30.23: 2/1

Timing Performance of a Digital SiPM Prototype with a Fast LaserInge Diehl1, Finn Feindt1, Karsten Hansen1, Stephan Lachnit1,2, Frauke Poblotzki1, •Daniil Rastorguev1,3, Tomas Vanat1, and Gianpiero Vignola1,41Deutsches Elektronen-Synchrotron, Hamburg, Germany — 2Universität Hamburg, Germany — 3Bergische Universität Wuppertal, Germany — 4Universität Bonn, Germany

Recent advances in CMOS technologies open up possibilities for new types of monolithic silicon detectors. DESY has designed a prototype of a silicon photomultipier integrated with a digital readout ASIC. This device, combining features of a pixelated chip, such as a high granularity readout, with an intrinsically high temporal resolution of a SiPM, is an interesting candidate for 4D tracking in future particle physics experiments. This work presents the characterization of the timing performance of the dSiPM by means of a fast pulsed laser, as well as comparison with the results, obtained via direct detection of charged particles at the DESY II testbeam facility. The study showcases temporal resolution of the device as a function of charge injection position. The results can be correlated to intrinsic properties of the single photon avalanche diodes and to the design of the digital circuitry.

Keywords: SiPM; lasers; timing

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