CERN – EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH Active Quadrupole Stabilization for Future Linear Particle Colliders

The future Compact LInear particle Collider (CLIC) under study at CERN will require to stabilize heavy electromagnets, and also to provide them some positioning capabilities. Firstly, this paper presents the concept adopted to address both requirements. Secondly, the control strategy adopted for the stabilization is studied numerically, showing that the quadrupole can be stabilized in both lateral and vertical direction. Finally, the strategy is validated experimentally on a single degree of freedom scaled test bench. Geneva, Switzerland 10 May 2010 CLIC – Note – 848 Active Quadrupole Stabilization for Future Linear Particle Colliders C. Collette∗, K. Artoos, A. Kuzmin, S. Janssens, M. Sylte, M. Guinchard, C. Hauviller Engineering Department, European Organization for Nuclear Research Geneva 23, 1211 Geneva, Switzerland Abstract The future Compact LInear particle Collider (CLIC) under study at CERN will require to stabilize heavy electromagnets, and also to provide them some positioning capabilities. Firstly, this paper presents the concept adopted to address both requirements. Secondly, the control strategy adopted for the stabilization is studied numerically, showing that the quadrupole can be stabilized in both lateral and vertical direction. Finally, the strategy is validated experimentally on a single degree of freedom scaled test bench.