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Optimizacija scintilacijskega detektorja BGO za detektorski sistem DEGAS
ID Košir, Gregor (Author), ID Lipoglavšek, Matej (Mentor) More about this mentor... This link opens in a new window, ID Vencelj, Matjaž (Co-mentor)

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Abstract
Cilj projekta je optimizacija optoelektričnega zajema s silicijevimi fotopomnoževalkami (SiPM) v scintilacijskem detektorju DEGAS BC BGO, ki bo uporabljen v eksperimentih kolaboracije FAIR/NUSTAR. Scintilacijski kristal je v obliki pravilne šeststrane prizme s krožnim izsekom v enem izmed robov zaradi prostorskih omejitev sistema DEGAS. Pri izdelavi prototipa je bilo potrebno izbrati primeren reflektor in najmanjše zadostno število SiPM, da bo detektor dovolj učinkovito deloval kot generator signala veto za dogodke ozadja in za neelastično sipane žarke gama. Narejene so bile računalniške simulacije v katerih sem preveril različne kombinacije reflektorjev in izbire števila SiPM-jev. Predstavljen je tudi proces izdelave in testiranja prototipa optoelektrične verige, ki vključuje zajem izhodnega signala SiPM in sistem potreben za napajanje tako elektronskih vezij kot fotopomnoževalk.

Language:Slovenian
Keywords:SLitrani, Monte Carlo simulacije, Spektroskopija žarkov gama, Silicijeve fotopomnoževalke, zajem izhodnega signala
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FMF - Faculty of Mathematics and Physics
Year:2020
PID:20.500.12556/RUL-120175 This link opens in a new window
COBISS.SI-ID:30088451 This link opens in a new window
Publication date in RUL:17.09.2020
Views:2125
Downloads:92
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Secondary language

Language:English
Title:Optimizing a BGO Scintillation Detector for DEGAS detector array
Abstract:
The goal of this project is to optimize the DEGAS BGO scintillation detector with silicon photomultipliers (SiPM), to be used in experiments by the FAIR/NUSTAR collaboration. The scintillation crystal is in the shape of a hexagonal prism with one of the corners cylindrically cut from the rest of the crytal, due to spatial limitations of the DEGAS detector array. During the prototype design, an apropriate reflector foil and the lowest sufficient number of SiPMs needed to be selected for the detector to properly function in veto mode for background events and Compton scattered gamma rays. For that purpose I made computer simulations with various combinations of reflectors and numbers of SiPMs. The process used to design and test the readout, biasing and power supply electronics is described and at the end some first measurements are presented.

Keywords:SLitrani, Monte Carlo simulations, Gamma-ray spectroscopy, Silicon photomultipliers, Readout

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