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LHC Crab Cavities

A small angle (~0.5mrad) crab scheme at the LHC is foreseen as one of the most effective tools for reaching the proposed increase in the luminosity of a factor of 3-10 via an IR upgrade. Crab cavities recover the geometric luminosity loss from the finite crossing angle which steeply increases to unacceptable levels as the IP beta function is reduced below its nominal value. The crab compensation is anticipated to be accomplished in two phases:
  • Phase I: A global scheme with cavities placed far from the IP (IR4 region) with the right phase advance and consequently resulting in a z-dependent closed orbit for the bunches.
  • Phase II: A local scheme near the IP and consequently the closed orbit outside the IR region is unaffected.

RF Design & Requirements: Cavity, Couplers & Components
Optics with Crab Cavities: Global & Local
Collimation & Aperture
Tracking Studies Synchro-Betatron Resonances, DA, etc..
Integration into the LHC
Workshops, Meetings & Minutes
Papers & Presentations
Global Collaboration & Participants

Next CC Meeting (Webex 10)

Date: Friday, January 22, 2010
Time: 5 pm (CERN time: GMT +01:00)
For Meeting Details: Click Here

-- R. Calaga - Jun 23, 2009

Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf 800MHz-cell-Jan30-liling.pdf r1 manage 955.0 K 2008-01-31 - 07:10 UnknownUser 800 MHz Crab cavity optimization, Jan 30, 2008, Liling Xiao (SLAC)
PNGpng crabcrossing.png r1 manage 17.8 K 2008-01-28 - 17:48 RamaCalaga  
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Topic revision: r44 - 2010-01-13 - Rcalaga
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