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Entry  Fri Jul 23 08:15:59 2010, steve, Update, PSL, ref cavity ion pump 
    Reply  Tue Jun 5 09:44:14 2012, steve, Update, PSL, ref cavity ion pump must be pumped 
Message ID: 6753     Entry time: Tue Jun 5 09:44:14 2012     In reply to: 3272
Author: steve 
Type: Update 
Category: PSL 
Subject: ref cavity ion pump must be pumped 

Quote:

The ref cavity ion pump was running at 7.7kV instead of 5kV

This Digitel SPC-1 20 l/s ion pump should be running at 5kV

 I noticed that the ion pump was turned off.

It was turned ON. It showed 0.00 microA at 5kV  The current display is not sensitive enough. There must be some small outgassing or leak. It adds up if we stop pumping.

We want to keep the reference cavity in pristine condition. It required the ion pump running all times.

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