CERN-THESIS-2018-124 11/06/2018 Linköping University | Department of Physics, Chemistry and Biology Master’s thesis, 30 hp | Educational Program: Physics, Chemistry and Biology Spring term 2018 | LITH-IFM-A-EX—18/3565—SE Phased Array Ultrasonic Testing of Austenitic Stainless Steel Welds of the 11 T HL-LHC Dipole Magnets Marcus Lorentzon Examiner, Ferenc Tasnadi Supervisor, Ching-Lien Hsiao and Christian Scheuerlein