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| 40m Log |
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 Fri Sep 21 09:59:09 2018, yuki, Configuration, ASC, Y end table upgrade plan 
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 Sun Sep 23 19:32:23 2018, yuki, Configuration, ASC, Y end table upgrade plan
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Mon Sep 24 11:09:05 2018, yuki, Configuration, ASC, Y end table upgrade plan
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Tue Sep 25 18:08:50 2018, yuki, Configuration, ASC, Y end table upgrade plan
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Thu Sep 27 14:02:55 2018, yuki, Configuration, ASC, PZT driver board verification
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Sun Sep 30 20:14:51 2018, yuki, Configuration, ASC, QPD calibration
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Mon Oct 1 12:03:41 2018, not yuki, Configuration, ASC, PZT driver board verification
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Mon Oct 1 13:33:55 2018, yuki, Configuration, ASC, QPD calibration
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Tue Oct 2 18:50:53 2018, yuki, Configuration, ASC, PZT mirror calibration
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Wed Oct 3 18:15:34 2018, yuki, Configuration, ASC, AI board improvement
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Thu Oct 4 00:44:50 2018, yuki, Configuration, ASC, AI board improvement
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Thu Oct 4 22:15:30 2018, yuki, Configuration, ASC, Y-end table upgrade
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Fri Oct 5 00:46:17 2018, Koji, Configuration, ASC, Y-end table upgrade
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Fri Oct 5 17:32:38 2018, yuki, Configuration, ASC, Y-end table upgrade
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Mon Oct 8 00:46:35 2018, yuki, Configuration, ASC, Y-end table upgrade
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Fri Oct 5 17:47:55 2018, gautam, Configuration, ASC, Y-end table upgrade
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Fri Oct 5 22:49:22 2018, yuki, Configuration, ASC, Y-end table upgrade
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Sun Oct 7 16:51:03 2018, gautam, Configuration, LSC, Yarm triggering changed
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Sun Oct 7 22:30:42 2018, yuki, Configuration, LSC, Yarm Green locking was recovered
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Tue Oct 9 23:03:43 2018, yuki, Configuration, LSC, Yarm Green locking was recovered
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Wed Oct 10 12:38:27 2018, yuki, Configuration, LSC, All hardware was installed
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Mon Oct 1 20:39:09 2018, gautam, Configuration, ASC, c1asy
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Mon Oct 8 18:56:52 2018, gautam, Configuration, ASC, c1asx filter coefficient file missing
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Tue Oct 9 16:05:29 2018, gautam, Configuration, ASC, c1tst deleted, c1asy deployed.
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Wed Oct 3 14:24:40 2018, yuki, Configuration, ASC, Y end table upgrade plan
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Mon Oct 15 20:11:56 2018, yuki, Configuration, ASC, Y end table upgrade plan
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Wed Oct 17 20:46:24 2018, yuki, Configuration, ASC, Y end table upgrade plan
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Message ID: 14205
Entry time: Fri Sep 21 09:59:09 2018
Reply to this: 14212
14226
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| Author: |
yuki |
| Type: |
Configuration |
| Category: |
ASC |
| Subject: |
Y end table upgrade plan |
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[Yuki, Gautam]
Attachments #1 is the current setup of AUX Y Green locking and it has to be improved because:
- current efficiency of mode matching is about 50%
- current setup doesn't separate the degrees of freedom of TEM01 with PZT mirrors (the difference of gouy phase between PZT mirrors should be around 90 deg)
- we want to remotely control PZT mirrors for alignment
(Attachments #2 and #3)
About the above two:
One of the example for improvement is just adding a new lens (f=10cm) soon after the doubling crystal. That will make mode matching better (100%) and also make separation better (85 deg) (Attachments #4 and #5). I'm checking whether we have the lens and there is space to set it. And I will measure current power of transmitted main laser in order to confirm the improvement of alignment.
About the last:
I am considering what component is needed.
Reference:
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