Title of article :
Analysis and control of wakefields in X-band crab cavities for Compact Linear Collider
Author/Authors :
Ambattu، نويسنده , , P.K. and Burt، نويسنده , , G. and Khan، نويسنده , , V.F. and Jones، نويسنده , , R.M. and Dexter، نويسنده , , A. and Dolgashev، نويسنده , , V.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
11
From page :
27
To page :
37
Abstract :
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.
Keywords :
X-band crab cavity , Damped–detuned cavity , Asymmetrical choke-mode cavity , Compact Linear Collider , Wakefields
Journal title :
Nuclear Instruments and Methods in Physics Research Section A
Serial Year :
2011
Journal title :
Nuclear Instruments and Methods in Physics Research Section A
Record number :
2205121
Link To Document :
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