Status of the Clic Studies on Water Induced Quadrupole Vibrations

Performance of future linear colliders will be limited by vibration of the focusing quadrupoles. The Compact Linear Collider (CLIC) base line includes resistive quadrupoles. They incorporate water cooling circuits , which will increase the vibration level of the quadrupoles. In this paper, the CLIC studies on water induced magnet vibration are summarized. Theoretical understanding of the phenomenon and detailed measurements on magnet prototypes are presented.