CERN Accelerating science

Article
Report number	arXiv:0906.3593 ; SLAC-PUB-14814
Title	Wakefield damping for the CLIC crab cavity
Author(s)	Ambattu, Praveen Kumar (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U.) ; Burt, Graeme (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U.) ; Dexter, Amos C. (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U.) ; Carter, Richard G. (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U.) ; Khan, Vasim (Cockcroft Inst. Accel. Sci. Tech. ; Manchester U.) ; Jones, Roger M. (Cockcroft Inst. Accel. Sci. Tech. ; Manchester U.) ; Dolgashev, Valery (SLAC)
Publication	2010-12
Imprint	22 Jun 2009
Number of pages	3
In:	Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.TU5PFP006
Subject category	physics.acc-ph
Accelerator/Facility, Experiment	CERN CLIC
Abstract	A crab cavity is required in the CLIC to allow effective head-on collision of bunches at the IP. A high operating frequency is preferred as the deflection voltage required for a given rotation angle and the RF phase tolerance for a crab cavity are inversely proportional to the operating frequency. The short bunch spacing of the CLIC scheme and the high sensitivity of the crab cavity to dipole kicks demand very high damping of the inter-bunch wakes, the major contributor to the luminosity loss of colliding bunches. This paper investigates the nature of the wakefields in the CLIC crab cavity and the possibility of using various damping schemes to suppress them effectively.

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