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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: 10549
Entry time: Mon Sep 29 12:47:51 2014
In reply to: 10546
Reply to this: 10550
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Author: |
ericq |
Type: |
Update |
Category: |
General |
Subject: |
Vent update |
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Quote: |
- Lock the SRM cage down fully (right now, has 2 clamps on, and one laying unused)
- Align SRM for SRC flashes
- Adjust SRM OSEM positions as needed
- Adjust SRM oplev beam path, measure lever arm for calibration
- Confirm beam spots on output mirrors in ITMY and BS chambers are ok
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[Koji, ericq]
We have completed the above points; the ITMY table is still level.
Despite what the wiki says, the SRM LR OSEM open voltage is ~1.97V instead of ~1.64, so we shot for half of that.
The in-air steering of the SRM oplev return beam needs adjustment. I'll estimate the beam path length when I'm taking pictures and closing up.
Left to do:
- Now that AS is back on diode, lock arms and align everything. Confirm everyone's happiness.
- Take numerous pictures of ITMY chamber.
- Center oplevs
- Put doors on
- Close shutters
- Pump down
- Replace MC refl Y1 with the beamsplitter
- Turn PSL power back up
Related In-Air work:
- Fix POY steering
- Fix SRM oplev return steering
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