Title :
The CLIC study of magnet stability and time-dependent luminosity performance
Author :
Aleksa, M. ; Assmann, R. ; Coosemans, W. ; Guignard, G. ; Leros, N. ; Mayoud, M. ; Redaelli, S. ; Ruggiero, F. ; Russenschuck, S. ; Schulte, D. ; Wilson, I. ; Zimmermann, F.
Author_Institution :
CERN, Geneva, Switzerland
Abstract :
The present parameters of the CLIC study require the collision of small emittance beams with a vertical spot size of 1 nm. The tolerances on vertical quadrupole vibration (above a few Hz) are as small as a few nm in the linac and most of the Final Focus. The final focusing quadrupole has a stability requirement of 4 nm in the horizontal and 0.2 nm in the vertical direction. Those tolerances can only be achieved with the use of damped support structures for CLIC. A study has been set-up at CERN to explore the application of stabilization devices from specialized industry and to predict the time-dependent luminosity performance for CLIC. The results will guide the specification of required technological improvements and will help to verify the feasibility of the present CLIC parameters
Keywords :
accelerator magnets; electron accelerators; linear colliders; CLIC; final focusing quadrupole; magnet stability; support structures; time-dependent luminosity; vertical quadrupole vibration; Acceleration; Cooling; Lattices; Linear particle accelerator; Niobium; Optical design; Stability; Transfer functions; Vibrations; Water heating;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.988249
