Precise muon drift tube detectors for high background rate conditions [Elektronische Ressource] / Albert Engl. Betreuer: Otmar Biebel

PRECISE MUON DRIFT TUBE DETECTORS FORHIGH BACKGROUND RATE CONDITIONSDissertation der Fakult¨at fu¨r PhysikderLudwig-Maximilians-Universit¨at Mu¨nchenvorgelegt vonAlbert Englgeboren in TegernseeMu¨nchen, den 1. Juli 20111. Gutachter: Prof. Dr. Otmar Biebel2. Gutachter: Prof. Dr. Wolfgang Du¨nnweberTag der mu¨ndlichen Pru¨fung: 04.08.2011Die Neugierde steht immer an erster Stelle eines Problems,das gel¨ost werden will.(Galileo Galilei)ABSTRACTThe muon spectrometer of the ATLAS-experiment at the Large Hadron Colliderconsists of drift tube chambers, which provide the precise measurement of trajec-tories of traversing muons. In order to determine the momentum of the muonswith high precision, the measurement of the position of the muon in a single tubehas to be more accurate than σ≤ 100 m.The large cross section of proton-proton-collisions and the high luminosity of theaccelerator cause relevant background of neutrons and γs in the muon spectrome-34 −2 −1ter. Duringthe next decade a luminosity upgrade [1] to510 cm s is planned,which will increase the background counting rates considerably. In this contextthis work deals with the further development of the existing drift chamber tech-nology to provide the required accuracy of the position measurement under highbackground conditions.