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40m Log |
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Thu Sep 25 19:42:12 2014, ericq, Update, General, Vent progress
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Fri Sep 26 12:25:34 2014, ericq, Update, General, Vent progress
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Fri Sep 26 16:10:14 2014, ericq, Update, General, Vent update
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Fri Sep 26 17:13:39 2014, ericq, Update, General, Vent update
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Mon Sep 29 12:47:51 2014, ericq, Update, General, Vent update
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Mon Sep 29 17:10:51 2014, ericq, Update, General, Vent update
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Mon Sep 29 18:12:24 2014, ericq, Update, General, Vent update
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Tue Sep 30 11:53:29 2014, ericq, Update, General, Vent update
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Tue Sep 30 16:18:57 2014, Steve, Update, VAC, pump down #78 has started
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Tue Sep 30 18:02:53 2014, Steve, Update, VAC, pump down #78 stops at 320 Torr
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Wed Oct 1 10:21:19 2014, Steve, Update, VAC, pump down #78 stops at 3.5 Torr
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Wed Oct 1 16:26:53 2014, Steve, Update, VAC, pump down #78 completed
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Thu Oct 2 09:23:23 2014, Steve, Update, VAC, vent 77
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Fri Oct 3 10:10:37 2014, Steve, Update, VAC, cold cathode gauge reading switched
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Fri May 8 14:30:09 2015, Steve, Update, VAC, CC1 cold cathode gauges are baked now
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Tue May 12 14:57:52 2015, Steve, Update, VAC, CC1 cold cathode gauges are baked now
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Message ID: 10541
Entry time: Thu Sep 25 19:42:12 2014
Reply to this: 10544
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Author: |
ericq |
Type: |
Update |
Category: |
General |
Subject: |
Vent progress |
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[q, Jenne, Manasa]
ELOG Outline
- Aligned arms
- Took a bunch of photos of ITMY chamber.
- Used Crystallaser to reverse trace POY beam path
- Realized real POY flashes were visible
- Tried adjusted POY steering to give us enough room to move SRM forward 3 in
- Not enough steering room
- Placed beam centering targets just before OM3 and after OM4, on far side of BS table
- Twisted SR2 by ~5 degrees
- Moved SRM laterally ~3 inches (beam had been hitting optic center, then suspension cage after SR2 twist)
- Moved SRM foward about 3 inches, adjusted angle for coarse retroreflection
- Measured distances between suspensions
- Tried running Gabriele's distance reconstruction code, results not looking so good; redundancy checks are off by ~1cm
- Started roughly repositioning OM1 and OM2 to get through beam targets
- Closed light doors
- ITMY pointing has gone bad, no green or IR resonance to be seen, still have IR and Green in Xarm, so TTs, BS are ok
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