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40m Log |
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Mon Jan 23 15:16:52 2017, gautam, Update, Optical Levers, ETMY Oplev HeNe needs to be replaced
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Mon Jan 23 17:24:26 2017, Steve, Update, Optical Levers, ETMY Oplev HeNe is running hot
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Tue Jan 24 17:52:15 2017, Craig, Update, Optical Levers, ETMY Oplev HeNe is replaced 6x
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Wed Mar 1 08:28:04 2017, Steve, Update, Optical Levers, oplev laser RIN 
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Thu Mar 2 13:59:04 2017, Steve, Update, Optical Levers, oplev laser RIN
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Thu Mar 2 17:58:45 2017, rana, Update, Optical Levers, oplev laser RIN
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Fri Mar 3 17:24:21 2017, Steve, Update, Optical Levers, oplev laser RIN
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Wed Mar 8 15:28:37 2017, Steve, Update, Optical Levers, oplev laser RIN 
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Mon Apr 10 09:49:32 2017, Steve, Update, Optical Levers, oplev laser RIN test planning
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Mon Apr 10 14:21:57 2017, rana, Update, Optical Levers, oplev laser RIN test planning
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Tue May 30 13:36:58 2017, Steve, Update, Optical Levers, ETMY Oplev HeNe is replaced
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Tue Jan 15 18:16:00 2019, gautam, Update, Optical Levers, ETMY Oplev HeNe needs replacement 
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Fri Jan 18 12:52:07 2019, gautam, Update, Optical Levers, BS/PRM Oplev HeNe replaced
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Message ID: 14404
Entry time: Fri Jan 18 12:52:07 2019
In reply to: 14402
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Author: |
gautam |
Type: |
Update |
Category: |
Optical Levers |
Subject: |
BS/PRM Oplev HeNe replaced |
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I replaced the BS/PRM Oplev HeNe with one of the heads from the SP table where Steve was setting up the OL RIN/pointing noise experiment. The old one was dead. The new one outputs 3.2 mW of power, I've labelled it with this number, serial number and date of replacement. The beam comes out of the vacuum chamber for both the BS and PRM, and the RIN spectra (Attachment #1) look alright. The calibration into urad and loop gains possibly have to be tweaked. Since the beam comes out of vacuum, I say that we shouldn't open the BS/PRM chamber for this vent - we don't have a proper plan for the in-air layout yet, so we can add this to the list of to-dos for the next vent.
I think we are down to our last spare HeNe head in the lab - @Chub, please look into ordering some more, the ITMX HeNe is going to need replacement soon. |
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