Re: Cathode vibration- how to dampen?

[Tim Whitlatch <whitey@jlab.org>]

Thanks for the heads up Bill. This may or may not be an issue. Dan has 
proposed doing a simple test to determine what frequencies drive the 
oscillations (visible) in the cathode plane. He said the equipment is 
available. Before we spend any time on coming up with solutions, let's 
see what the natural frequencies of the plane are and what driving 
frequencies it will be subject to by way of Dan's simple test. There may 
be no issue at all.

Cheers,

       Tim

wcrahen wrote:
> Brian stopped by to discuss vibration of the cathode planes in the 
> FDC- and any strategies we might have to eliminate motion. He would 
> like to set up a meeting. The  first thought is to attach the cathode 
> to the ground plane with some rohacel plugs (we can't have a complete 
> ring if we flow gas through the center).