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

[Lorelei Carlson]

Thank you to all of those who RSVP'd, see you at noon today!
-Lorelei

Lorelei Carlson wrote:
>
>     Please RSVP by COB TODAY!!!! 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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