[Cuga] Pizza Seminar Series- Wednesday, March 21, 2012- A message from Hari Areti

[Lorelei Carlson]

    Please RSVP by COB on 3/20/2012 to: lcarlson at jlab.org

Wednesday, March 21, 2012
****CC F113****
12:00-1:00pm

"Superconducting Parallel-Bar Deflecting/Crabbing Cavity Development and 
its Applications "


    Subashini De Silva*
    *

Old Dominion University


Abstract:

Deflecting/crabbing cavities serve a variety of purposes in different 
accelerator applications. Primarily in separating a single beam into 
multiple beams and in rotating bunches for head on collisions at the 
interaction point in particle colliders. Recently, new geometries for 
superconducting crabbing and deflecting cavities have been developed 
that have significantly improved properties over the standard TM_110 
type cavities. Compact superconducting deflecting/crabbing cavities are 
under development due to strict dimensional constraints and requirements 
in higher field gradients with low surface losses. The TEM-like 
superconducting parallel-bar cavity supports low operating frequencies, 
thus making the designs favorable for many of the deflecting/crabbing 
cavity applications. Additionally the wider separation of modes in the 
higher order mode spectrum is advantageous in high current applications. 
Currently the parallel-bar cavity is under consideration as an rf 
separator for the Jefferson Lab 12 GeV upgrade and as a crabbing 
structure for a possible LHC luminosity upgrade. The detailed design 
analysis of the parallel-bar cavity will be presented with current 
developments on the fabrication.

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