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| 40m Log |
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 Wed Mar 26 14:54:32 2014, Koji, Summary, LSC, PRMIsb locked with REFL165I&Q again
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 Wed Mar 26 21:51:42 2014, ericq, Summary, LSC, PRMIsb locked with REFL165I&Q again
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Fri Mar 28 17:22:55 2014, Koji, Summary, LSC, PRMIsb locked with REFL165I&Q again
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Mon Mar 31 13:15:55 2014, manasa, Summary, LSC, Alignment update
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Mon Mar 31 17:47:57 2014, ericq, Summary, LSC, MICH sensing oddities in REFL 3F 
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Mon Mar 31 21:23:30 2014, Gabriele, Summary, LSC, MICH sensing oddities in REFL 3F
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Message ID: 9765
Entry time: Mon Mar 31 13:15:55 2014
In reply to: 9758
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| Author: |
manasa |
| Type: |
Summary |
| Category: |
LSC |
| Subject: |
Alignment update |
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| Quote: |
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While I'm looking at the PRM ASC servo model, I tried to use the current servo filters for the ASC
as Manasa aligned the POP PDs and QPD yesterday. (BTW, I don't find any elog about it)
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Guilty!!
POP path
The POP PD was showing only ~200 counts which was very low compared to what we recollect from earlier PRMI locks (~400 counts). Also, the POP ASC QPD was also not well-aligned.
While holding PRMI lock on REFL55, I aligned POP path to its PD (maximize POP DC counts) and QPD (centered in pitch and yaw).
X and Y green
The X green totally lost its pointing because of the misaligned PZTs from last week's power failure. This was recovered.
Y arm green alignment was also recovered. |