20.500.12556/RUL-185761 Light detection by a resistively multiplexed array of SiPMs Zaznavanje svetlobe z uporovno multipleksirano matriko SiPM-jev Silicon photomultipliers (SiPMs) are small solid-state semiconductor photon detectors, which are already widely used in particle physics and the medical field. At the Department of low and medium energy physics (F2) of the Jožef Stefan Institute detectors for nuclear physics experiments that utilize SiPMs are being developed.The first goal of this thesis was to test silicon photomultipliers in dark environments, at different temperatures and under multiple light intensities from a LED. My second goal was to find out if it is feasible to obtain the position information on a resistively multiplexed array of SiPM’s. To solve these challenge I designed some custom 3D prints to couple the light from a LED to a single SiPM or a resistivitely multiplexed array of SiPMs. Furthermore I also needed to design a PCB to connect the multiplexed output signals to an oscilloscope to improve the noise. The data to assess the performance of a single SiPM and an array of SiPMs was acquired via a digital oscilloscope to a personal computer and analyzed within the ROOT framework and with the programming language C++. Silicijeve fotopomnoževalke (angl. Silicon photomultiplier, SiPM) so majhni polprevodniški detektorji fotonov, ki so že v široki uporabi v fiziki delcev ter medicini. Na Odseku za fiziko nizkih in srednjih energij (F2) na Institutu ”Jožef Stefan” poteka razvoj detekorjev za nuklearno fiziko na osnovi SiPM-jev. Prvi cilj te zaključne naloge je bilo pretestirati silicijevo fotopomnoževalko v temnem okolju, pri različnih temperaturah ter ob različnih intenzitetah svelobe iz LED diode. Moj drugi cilj je bil preučiti, če je možno iz uporovno multipleksirane mreže silicijevih fotopomnoževalk dobiti informacijo o poziciji vpadlega fotona. Te izzive sem rešil z razvojem 3d tiskanih delov, ki jo sklopili svetlobo iz LED diode na eno sam SiPM ali na mrežo resistivno multipleksiranih SiPM-jev. Nadalje, moral sem razviti tiskano vezje, ki omogoča povezavo multipleksiranih signalov na osciloskop, s čimer sem zmanjšal šum. Delovanje ene same fotopomnoževalke in resistivno multipleksirane mreže fotopomnoževalj sem preveril, tako da sem podatke preko digitalnega osciloskopa zajel na računalnik ter jih obdelal v okolju ROOT in s pomočjo programskega jezika C++. Advanced detectors Light detection Multiplexed signals PCB SiPM Silicon photomultiplier napredni detektorji detekcija svetlobe multipleksiranje signalov PCB SiPM silicijeva fotopomnoževalka true false false Angleški jezik Slovenski jezik Zaključna naloga 2026-08-20 08:15:30 2026-08-20 08:15:40 2026-08-28 14:56:35 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 161730 289318659 22078.pdf 22078.pdf 1 1B55521A4236285B8A95B554FB93A8DC bff744460a222dc973edb0b71eb7198fa9139f334fb01d7be5944c92e84b4fb2 2eb5537e-9c5e-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=244680 Fakulteta za matematiko in fiziko 0 0 0