LHC collimator alignment operational tool

Abstract

Beam-based LHC collimator alignment is necessary todetermine the beam centers and beam sizes at the colli-mator locations for various machine configurations. Fastand automatic alignment is provided through an opera-tional tool has been developed for use in the CERN Con-trol Center, which is described in this paper. The tool isimplemented as a Java application, and acquires beam lossand collimator position data from the hardware through amiddleware layer. The user interface is designed to allowfor a quick transition from application start up, to select-ing the required collimators for alignment and configuringthe alignment parameters. The measured beam centers andsizes are then logged and displayed in different forms tohelp the user set up the system.