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Thu Mar 7 18:12:03 2013, yuta, Update, Alignment, Input beam drift ~ 0.1 mrad/h in pitch
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Fri Mar 8 20:51:00 2013, Manasa, Update, Alignment, Input beam drift - investigation **IMPORTANT**
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Mon Mar 11 12:29:25 2013, Manasa, Update, Alignment, Input beam drift - weekend trend
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Tue Mar 12 14:02:22 2013, Jenne, Update, Alignment, Beam drift - mystery partially solved?
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Message ID: 8262
Entry time: Fri Mar 8 20:51:00 2013
In reply to: 8252
Reply to this: 8267
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Author: |
Manasa |
Type: |
Update |
Category: |
Alignment |
Subject: |
Input beam drift - investigation **IMPORTANT** |
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Checking the drift in input pointing (TT2 is the main suspect)
I have centered IPPOS and the 2/3 part of IPANG that comes out of vacuum to the QPDs to see the drift in input pointing over the weekend or atleast overnight.
If anybody would be working with the IFO alignment over the weekend, do so only after recording the drift in IPANG and IPPOS or if you will be working later tonight, center them ion the QPDs before leaving. |