20.500.12556/RUL-113461 Determination of working channels in the Aerogel RICH of Belle II spectrometer Določanje delujočih kanalov v detektorju obročev Čerenkova pri spektrometru Belle II In 2018, the accelerator SuperKEKB in Japan and the Belle II spectrometer started their operations. At the beginning of a spectrometer operation researchers began the calibration process of all sub-detectors. In this master thesis we present the calibration of the Aerogel Ring Imaging Cherenkov detector (ARICH). ARICH sub- detector consists of an aerogel plane and a position-sensitive photon detector plane. We explore which channels of the photon detector detected photons when there were not any photons present and which channels have never detected any photons at all. Then we investigate how the number of none working channels changes throughout the Belle II spectrometer operation. In the end we explore how the none working channels influence the measurements of the Cherenkov angle. V začeteku leta 2018 je na Japonskem v pospeševalniku SuperKEKB začel obra- tovati spektrometer Belle II. Ob pričetku delovanja je potrebno spektrometer in njegove komponente umeriti. V magistrski nalogi opišemo potek umeritve detek- torja Čerenkovih obročev ali po angleško Aerogel Ring Imaging Cherenkov detector (ARICH). ARICH je sestavljen iz sloja aerogela in fotonskega detektorja, razdel- jenega na 60480 kanalov. V delu raziščemo, kateri kanali fotonskega detektorja zaznajo fotone, tudi ko fotonov ni bilo, in kateri kanali fotonov ne zaznajo nikoli. Nato pregledamo vpliv takšnih kanalov na meritve Čerenkovega kota in kako se število napačno delujočih kanalov spreminja tekom obratovanja spektrometra Belle II. Cherenkov radiation Cherenkov detectors Standards and calibration Spectrometers and spectroscopic techniques Experimental methods and instrumentation for elementary-particle and nuclear physics Data analysis. Čerenkovo sevanje detektor obročev Čerenkova umeritev spektrometer analiza podatkov eksperimentalne metode in inštrumentacija v fiziki onsnovnih delcev. true false false Angleški jezik Slovenski jezik Magistrsko delo/naloga 2020-01-09 07:45:03 2020-01-09 07:45:10 2022-08-25 03:56:28 0000-00-00 00:00:00 2020 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 106270 3401060 1146.pdf 1146.pdf 1 B31671D06F724C63939079E2A355EB9B fb1ffa000ca8d55f76125073982240ddaa7ed93ef802356cd3931f598935c4b6 1c7dd7b9-a1b8-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=125551 Fakulteta za matematiko in fiziko 0 0 0