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 Wed Jun 15 15:03:41 2022, Koji, Update, PSL, PMC input beam aligned 
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 Thu Jun 16 15:29:03 2022, yuta, Update, PSL, PMC input beam aligned again, IMC
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Wed Nov 16 11:56:21 2022, Radhika, Update, PSL, PMC input beam aligned again, IMC
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Mon Nov 21 09:13:31 2022, JC, Update, PSL, PMC input beam aligned again, IMC
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Tue Nov 22 08:56:27 2022, JC, Update, PSL, PMC input beam alignment
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Mon Nov 28 11:21:25 2022, JC, Update, PSL, PMC input beam alignment
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Message ID: 16917
Entry time: Wed Jun 15 15:03:41 2022
Reply to this: 16922
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| Author: |
Koji |
| Type: |
Update |
| Category: |
PSL |
| Subject: |
PMC input beam aligned |
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The commissioners complained about the PMC alignment. The PMC input beam was aligned. It made the transmission improved from 0.72 to 0.74.
FYI: Which steering mirrors do we use for the PMC beam alignment?
The mounts are indicated with the red arrows in Attachment 2.
You have to move these two in common and differential for each pitch and yaw.
The first steering (the right one in the picture) has the beam going through the immediate back of the mount.
So touching the yaw knob of this mount needs some care so that you don't block the PMC refl beam. |
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