Ambattu, P. K. and Burt, G. and Khan, V. and Jones, R. M. and Dexter, A. C. and Dolgashev, V. (2011) Analysis and control of wakefields in X-band crab cavities for Compact Linear Collider. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 657 (1). pp. 27-37.Full text not available from this repository.
The Compact Linear Collider requires a crab cavity on each beamline prior to the interaction point to rotate the bunches before collision. The cavities are X-band travelling wave type and are located close to the final doublet of the beam delivery system. This makes the beam very sensitive to transverse momentum imparted by wakefields; hence the wakefields must be tightly controlled. Of special concerns are the orthogonal polarisation of the operating mode and the fundamental monopole mode of the crab cavity. The former mode is at the same frequency as the operating mode of a cylindrically symmetric cavity and the latter one is at a lower frequency and hence is difficult to damp using a single means. In this paper major problematic modes of the crab cavity are investigated and damping requirements for them are calculated. Possibility of meeting the required wakefield control using waveguide damping and choke damping is thoroughly investigated. As a comparison, damped-detuning is also investigated.
|Journal or Publication Title:||Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|
|Uncontrolled Keywords:||X-band crab cavity ; Compact Linear Collider ; Wakefields ; Asymmetrical choke-mode cavity ; Damped–detuned cavity|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)|
|Departments:||Faculty of Science and Technology > Engineering|
|Deposited By:||Dr Graeme Burt|
|Deposited On:||13 Dec 2010 08:34|
|Last Modified:||24 Apr 2017 03:15|
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