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40m Log |
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Tue Sep 11 17:17:51 2012, Eric Q., Mike J., Configuration, Electronics, AS beam scan
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Wed Sep 12 08:16:49 2012, Steve, Configuration, PEM, chamber must be sealed overnight!
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Wed Sep 12 20:08:51 2012, ericq, Update, Electronics, AS beam scan
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Thu Sep 13 19:59:43 2012, Mike J., Update, Electronics, AS beam scan
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Fri Sep 14 01:35:55 2012, Mike J., Update, Electronics, AS beam scan PLOTS 
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Tue Sep 18 22:06:21 2012, Mike J., Update, Electronics, AS beam scan plots and chi-squared  
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Message ID: 7373
Entry time: Wed Sep 12 08:16:49 2012
In reply to: 7372
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Author: |
Steve |
Type: |
Configuration |
Category: |
PEM |
Subject: |
chamber must be sealed overnight! |
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Quote: |
We conducted a beam scan on the AP table of the AS beam. We used a lens to focus the beam onto a power meter, and slowly moved a razor blade across the beam using a micrometer, vertically and horizontally both in front of and behind the beam. We also had to block the beam next to the AS beam in order to do this, but is unblocked now. Mike will begin curve fitting the data to try and see if there is a different spot size given by the x-axis vs. the y-axis, and if the lens has any effect.
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The vacuum envelope must be sealed with light doors on o-rings to insure a bug free IFO. This was a violation! |