Results of the 2018 ATLAS sTGC test beam and internal strip alignment of sTGC detectors

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dc.contributor.author Carlson, Evan Michael
dc.date.accessioned 2019-07-16T17:20:40Z
dc.date.available 2019-07-16T17:20:40Z
dc.date.copyright 2019 en_US
dc.date.issued 2019-07-16
dc.identifier.uri http://hdl.handle.net/1828/10973
dc.description.abstract Over the course of the next ten years, the LHC will undergo upgrades that will more than triple its current luminosity. This increase in luminosity will put greater demands on the ATLAS trigger system. To meet these demands, the Small Wheels of the muon spectrometer will be replaced with the New Small Wheels (NSWs) during Long Shutdown 2. The NSWs employ two gaseous detector technologies - small-strip Thin Gap Chambers (sTGCs) and Micromegas. To characterize the sTGCs, a series of test beams were conducted on a production sTGC module at the H8 beamline of CERN’s Super Proton Synchrotron. The setup and results of the test beams are presented, and it has been found that the detector meets the performance requirements of the NSW for efficiency and multiplicity at several operating voltages. To meet the performance requirements of the NSW, the positions of the detector elements must be precisely known. Quality control measurements were made during construction of the sTGC strip cathode boards to allow for the reconstruction of individual strip positions. A transformation from the nominal strip geometry to the as-built geometry is derived based on the QC measurements. This transformation was tested against microscope and cosmic ray misalignment measurements. The as-built predictions agree well with the misalignment measurements, demonstrating the ability to reconstruct the strip positions from the QC measurements. en_US
dc.language English eng
dc.language.iso en en_US
dc.rights Available to the World Wide Web en_US
dc.subject ATLAS en_US
dc.subject particle physics en_US
dc.subject physics en_US
dc.subject particle detectors en_US
dc.subject CERN en_US
dc.subject New Small Wheel en_US
dc.subject muon en_US
dc.subject sTGC en_US
dc.subject small-strip Thin Gap Chamber en_US
dc.subject beam test en_US
dc.subject quality control en_US
dc.subject alignment en_US
dc.subject as-built en_US
dc.subject cosmic ray en_US
dc.subject Large Hadron Collider en_US
dc.subject muon spectrometer en_US
dc.subject microscope en_US
dc.subject Long Shutdown 2 en_US
dc.subject H8 en_US
dc.subject Super Proton Synchrotron en_US
dc.title Results of the 2018 ATLAS sTGC test beam and internal strip alignment of sTGC detectors en_US
dc.type Thesis en_US
dc.contributor.supervisor Trigger, Isabel
dc.contributor.supervisor Kowalewski, Robert V.
dc.degree.department Department of Physics and Astronomy en_US
dc.degree.level Master of Science M.Sc. en_US
dc.description.scholarlevel Graduate en_US

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