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40m Log |
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Mon Dec 17 20:22:07 2012, Jamie, Update, General, Vent plan: WE VENT TOMORROW
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Mon Dec 17 21:33:45 2012, Manasa, Update, General, Vent plan: WE VENT TOMORROW
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Tue Dec 18 07:03:40 2012, Manasa, Update, General, Vent plan: WE VENT TOMORROW
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Tue Dec 18 10:43:20 2012, Steve, Update, VAC, vent has completed  
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Wed Dec 19 11:53:23 2012, Steve, Update, VAC, AC removed
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Thu Jan 24 14:40:09 2013, Steve, Update, VAC, RGA backgroung
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Mon Feb 11 16:16:27 2013, Steve, Update, VAC, 55 days at atmoshere
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Message ID: 7843
Entry time: Mon Dec 17 21:33:45 2012
In reply to: 7842
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Author: |
Manasa |
Type: |
Update |
Category: |
General |
Subject: |
Vent plan: WE VENT TOMORROW |
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Quote: |
Manasa is lowering the input power and preparing the mode cleaner.
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I aligned the PSL angle and position QPDs...then attenuated the input laser power using HWP-PBS-HWP combo from 1.28W to 100mW following instructions from elog 6892 and elog 7299.
To enable MC locking, I replaced the 10% BS before the MC_REFL PD with Y1 mirror. I tweaked the steering mirrors at the PSL table a teeny tiny bit to enable MC locking. MC is now locked at low power with 1.0 transmission. |