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Entry  Sat Sep 8 00:04:53 2012, Jenne, Update, General, Beam scan measurement plan - to do Monday morning. 
    Reply  Mon Sep 10 08:50:35 2012, Steve, Update, General, Beam scan measurement plan - to do Monday morning. 
    Reply  Mon Sep 10 19:04:32 2012, rana, Update, General, plan 
Message ID: 7369     Entry time: Mon Sep 10 08:50:35 2012     In reply to: 7367
Author: Steve 
Type: Update 
Category: General 
Subject: Beam scan measurement plan - to do Monday morning. 

 

 I misaligned ITMX pitch on Friday and brought out the beam at 44" height. The beam was bouncing to much. I only realized it this morning why. The OSEM voltages are 1.8, 1.7, 0.2 and 0.9V  Even with a stable 8-9 mm diameter beam you would be clipping

on the beam scanner 9 mm aperture. You can bring out the beam with one mirror right after  PR3, just remove  PRMOP2

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