[Bteam] current spikes with one second interval are gone

Tomasz Plawski plawski at jlab.org
Thu Feb 3 07:09:01 EST 2011


With V.V unplugged we lost valuable piece of information about injector 
phases what particularly during last days this is a huge shortfall. Once 
you are certain that  V.V. caused RF modulation I can add RF circulator 
to every cavity probe signal. This unit will add additional ~20 dB of 
isolation.  Still this modification will help only if beam distortion 
was caused by RF signals coupling/cross-coupling in the phase monitor 
system.

Tomasz



> They've gone away since the vector voltmeters were unplugged yesterday!
>
> https://hallcweb.jlab.org/hclog/1102_archive/110202132356.html
>
> OTOH, 60 Hz is still evident.
>
> Jay





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