The Compact Linear Collider (CLIC) requires a low emittance beam transport and preservation, thus a precise control of the beam orbit along up to 50 km of the accelerator components in the sub-um regime is required. Within the PACMAN (Particle Accelerator Components Metrology and Alignment to the Nanometer Scale) Ph.D. training action a study with the objective to pre-align the electrical center of a 15 GHz cavity BPM to the magnetic center of the main beam quadrupole is initiated. Goals, first ideas, some technical details, as well as the challenges of this stretched wire based method will be presented, including calculations, simulations, and first preliminary measurements.

The PACMAN project is funded by the European Union's Seventh Framework Program for research, technological development and demonstration under grant agreement no. 606839.

Keywords: CERN, Accelerators, Emittance, CLIC, BPM, EM Simulations, RF Cavity, Electrical Center, Alignment, Beam Diagnostics

File: http://www.imeko-tc4-2014.org/files/IMEKO_TC4_2014_proceedings.pdf