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| 40m Log |
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 Fri Feb 15 20:07:28 2013, yuta, Update, Alignment, POP path set up but AS55 is broken
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 Fri Feb 15 21:22:29 2013, yuta, Update, Electronics, AS55 replaced with POP55 PD
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Mon Feb 18 21:43:05 2013, Koji, Update, Alignment, POP path set up but AS55 is broken 
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Tue Feb 19 00:21:09 2013, yuta, Update, Electronics, POP path set up but AS55 is broken
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Tue Feb 19 05:42:28 2013, Koji, Update, Electronics, POP path set up but AS55 is broken
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Tue Feb 19 08:06:02 2013, yuta, Update, Electronics, POP path set up but AS55 is broken
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Message ID: 8105
Entry time: Tue Feb 19 08:06:02 2013
In reply to: 8104
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| Author: |
yuta |
| Type: |
Update |
| Category: |
Electronics |
| Subject: |
POP path set up but AS55 is broken |
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I didn't use LED flash light. We learned from the past (elog #7355). I checked that POP55 and REFL55/165/33/11 are clearly responding to flash flight, but I didn't expect that much difference in DC gain.
I wonder why we could align AS beam to AS55 in Feb 8 (elog #8030), but not in Feb 15 (elog #8091). I will check during the pump down.
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