1075942 SzGeCERN 20250814162427.0 oai:cds.cern.ch:1075942 cerncds:FULLTEXT cerncds:atlas-pub SPIRES 8133964 Inspire 811856 ATL-INDET-PUB-2008-011 eng ATL-COM-INDET-2007-020 Dobson, E Study of a twisted ATLAS SCT Barrel deformation as revealed by a photogrammetric survey 2007 Geneva CERN 18 Dec 2007 mult. p See reference ATL-COM-INDET-2007-004 for more detail on the same study. A photogrammetry survey on the SCT barrels was performed as an engineering check on the structure of the ATLAS Semiconductor Tracker (SCT) shortly after construction. Analysis of the data obtained revealed small scale elliptical deformation as well as a twist of the structure. The results of the survey are presented as well as interpolation of the measured targets to the module positions and a comparison with track based alignment measurements. CC-BY-4.0 Preprint PUB CERN EDS SzGeCERN Detectors and Experimental Techniques SzGeCERN Inner Detector CERN SCT CERN Photogrammetry CERN Survey CERN Photogrammetric CERN Alignment CERN Interpolation CERN INTNOTE PUBLATLAS CERN LHC ATLAS Gibson, S M Heinemann, F Karagoz-Unel, M PH-EP http://documents.cern.ch/cgi-bin/setlink?base=atlnot&categ=PUB&id=indet-pub-2008-011 Access to fulltext http://cds.cern.ch/record/1075942/files/indet-pub-2008-011.pdf Access to fulltext eleanor.dobson@cern.ch n 200770 91 20100906 0951 CER01 20071218 PUBLIC 002731396CER INTNOTEATLASPUBL NOTE