Dresden 2014 – scientific programme
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BE: Beschleunigerphysik
BE 1: Hadron Accelerators and Colliders
BE 1.7: Talk
Monday, March 31, 2014, 17:30–17:45, MOL 213
Impact of Quadrupolar Errors (b2) on the Optics Measurement Resolution in the LHC — •Andy Langner1,2, Per Hagen2, Ewen Hamish Maclean2, Viktor Maier2, and Rogelio Tomás2 — 1Universitaet Hamburg — 2CERN
With respect to the operation of the LHC in 2015 with an increased collision energy, an accurate measurement and correction of the optics will be crucial. The algorithm to determine LHC beta-functions uses the measured turn-by-turn data at the beam position monitors (BPMs) from an excited betatron oscillation. From the phase advances between three adjacent BPMs the beta functions are computed. An important prerequisite for this method is the precise knowledge of the optics model. It was studied whether introducing measured values of the systematic quadrupolar errors (b2) to the model will further increase the measurement resolution.