Influence of the Coil and the Magnet Support on the Modal Behaviour of the CLIC type 4 MBQ

An active stabilization system for the Compact Linear Collider (CLIC) Main Beam Quadrupoles (MBQ) is needed to reach the strict requirements necessary to achieve high luminosity. A stiff supporting structure has been designed and is being tested both in simulations and experimentally for optimization and validation. The modal behaviour of the magnet on its supporting device highly affects the performance of the stabilization system. Several numerical modal analysis simulations have been performed and are presented in this paper