40m
QIL
Cryo_Lab
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SUS_Lab
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OMC_Lab
CRIME_Lab
FEA
ENG_Labs
OptContFac
Mariner
WBEEShop
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40m Log |
Not logged in |
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Wed Jul 27 15:03:02 2016, sisyphus, Metaphysics, SUS, Broken wire
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Wed Jul 27 16:56:47 2016, rana, Metaphysics, SUS, Broken wire
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Thu Jul 28 08:42:36 2016, Steve, Update, SUS, wire clamp
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Fri Jul 29 15:17:23 2016, Steve, Update, SUS, wire and clamping test
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Fri Jul 29 20:12:54 2016, gautam, Update, SUS, third time - no luck
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Mon Aug 1 14:09:20 2016, Steve, Update, SUS, third time - no luck
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Tue Aug 9 16:19:27 2016, Steve, Update, SUS, torque driver for wire clamp
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Wed Aug 10 15:34:24 2016, Steve, Update, SUS, 6 in-lbs torque driver for wire clamp screw
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Wed Aug 3 00:15:39 2016, gautam, Update, SUS, ETMX suspended
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Wed Aug 3 09:26:54 2016, Lydia, Update, SUS, ETMX suspended: photos 8x
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Thu Aug 4 03:14:39 2016, gautam, Update, SUS, ETMX suspended
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Fri Aug 5 02:17:10 2016, gautam, Update, SUS, ETMX Ruby Wire Standoff Ready for Gluing 8x
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Fri Aug 5 04:43:09 2016, Koji, Update, SUS, ETMX Ruby Wire Standoff Ready for Gluing
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Fri Aug 5 18:21:28 2016, gautam, Update, SUS, ETMX Ruby Wire Standoff GLUED 11x
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Sun Aug 7 14:53:39 2016, ericq , Update, SUS, ETMX Standoff gluing was successful 
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Tue Aug 9 00:44:43 2016, gautam , Update, SUS, ETMY patch-up
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Tue Aug 9 15:27:57 2016, gautam , Update, SUS, ETMY patch-up 
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Wed Aug 10 03:08:03 2016, gautam , Update, SUS, ETMY patch-up
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Wed Aug 10 23:45:03 2016, gautam , Update, SUS, ETMY re-suspended 7x
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Thu Aug 11 00:20:41 2016, Koji, Update, SUS, ETMY re-suspended
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Thu Aug 11 11:56:40 2016, gautam, Update, SUS, ETMY re-suspended
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Mon Aug 15 18:28:15 2016, gautam, Update, SUS, Air-bake preparation
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Tue Aug 16 08:04:49 2016, Steve, Update, SUS, ETMY had Aluminum bridge
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Tue Aug 16 21:54:27 2016, gautam, Update, SUS, Air-bake - IN PROGRESS
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Wed Aug 17 08:47:43 2016, ericq, Update, SUS, Air-bake finished
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Wed Aug 17 23:00:57 2016, gautam, Update, SUS, Air-bake of towers
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Thu Aug 18 08:17:16 2016, Steve, Update, SUS, wire clamping preparation
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Thu Aug 18 14:14:20 2016, gautam, Update, SUS, Air-bake of towers - finished
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Fri Aug 19 22:51:12 2016, gautam, Update, SUS, ETMs first-contacted
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Sun Aug 21 16:23:05 2016, gautam, Update, SUS, ETMX suspended
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Mon Aug 22 13:06:11 2016, gautam, Update, SUS, ETMY suspended
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Mon Aug 22 18:04:24 2016, gautam, Update, SUS, ETMY OSEMs inserted
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Tue Aug 23 19:35:38 2016, gautam, Update, SUS, ETMY back in IFO 10x
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Thu Aug 25 21:11:43 2016, gautam, Update, SUS, ETMY back in IFO
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Fri Aug 26 11:35:44 2016, gautam, Update, SUS, ETMY UL sensor problematic  
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Fri Aug 26 14:05:38 2016, Steve, Update, SUS, ETMY UL sensor problematic
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Fri Aug 26 14:09:46 2016, ericq, Update, SUS, ETMY UL sensor problematic
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Sun Aug 28 21:40:11 2016, gautam, Update, SUS, ETMY UL sensor problematic
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Mon Aug 29 09:37:05 2016, gautam, Update, SUS, ETMY UL sensor problematic
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Mon Aug 29 14:42:06 2016, gautam, Update, SUS, ETMY Satellite box diagnostics 
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Fri Aug 26 17:48:14 2016, gautam, Update, SUS, bounce mode coupling reduction
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Mon Aug 29 21:53:14 2016, Lydia, Update, SUS, ETMY bounce mode coupling 
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Tue Aug 30 20:26:36 2016, gautam, Update, SUS, ITMY installed  
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Wed Aug 31 18:07:43 2016, Johannes, Update, SUS, ITMY free swinging
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Wed Aug 31 22:09:18 2016, gautam, Update, SUS, Y arm locked to Green
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Thu Sep 1 08:30:24 2016, Steve, Update, SUS, ITMY_UL is sick 
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Tue Sep 6 20:30:56 2016, rana, Update, SUS, ITMY_UL is sick
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Tue Sep 13 11:00:59 2016, Lydia, Update, SUS, ETMY UL glitch returned
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Thu Sep 1 19:59:22 2016, Johannes, Update, SUS, IR mode flashes in Y arm
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Fri Sep 2 21:09:08 2016, gautam, Update, SUS, Y arm locked in air 
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Tue Sep 6 20:45:14 2016, gautam, Update, SUS, X arm test masses back in chamber   
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Thu Sep 8 22:12:36 2016, gautam, Update, SUS, X arm in place, locked to green, IR flashes visible
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Fri Sep 9 17:50:02 2016, gautam, Update, SUS, Heavy doors on BS-PRM, ETMY chambers
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Sat Sep 10 14:26:01 2016, rana, Update, General, PRM SRM alignment
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Mon Sep 12 17:15:22 2016, Johannes, Update, General, PRM SRM alignment 
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Thu Sep 1 19:18:14 2016, Johannes, Update, SUS, ITMX and ETMX preemptive table leveling 8x
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Fri Sep 2 21:15:53 2016, gautam, Update, SUS, ITMX and ETMX preemptive table leveling
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Thu Sep 1 15:43:16 2016, rana, Update, SUS, OSEM adjustments
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Mon Sep 5 19:57:24 2016, Osamu, Update, SUS, OSEM adjustments
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Message ID: 12390
Entry time: Wed Aug 10 03:08:03 2016
In reply to: 12386
Reply to this: 12397
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Author: |
gautam |
Type: |
Update |
Category: |
SUS |
Subject: |
ETMY patch-up |
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[lydia, gautam]
Rana felt it was alright to use the wire clamp and suspension cage in its existing condition for checking the ETMY magnet-OSEM coil alignment. So we set about trying to re-suspend ETMY. The summary of our attempts:
- Transferred optic from magnet gluing rig to the suspension cage
- Adjusted bottom EQ stops till the scribe lines on both sides were at 5.5" as verified with the microscope
- Looped cleaned length of wire around optic, attached free ends to winches, placed the wires under light tension by finger-pulling the slack out
- Lowered the bottom EQ stops
- Winched the optic to the right height
- Clamped the wire with the only wire clamp on this variant of the suspension cage. We used the same torque wrench at the same torque setting as was successful for ETMX. But after removing the winches, and releasing the face EQ stops, the optic seems to have sagged a lot - it now touches all the bottom EQ stops, and the more I lower it, the more it seems to come down. Perhaps it is the effect of the wire grooves in the cage, or that the wire-clamp itself is slightly different from the piece used on the ETMX cage, but 1.3Nm of torque doesn't seem to have tightened the wire clamp sufficiently
- We can still probably salvage the situation by re-attaching the winches to the top of the cage, setting the optic to the right height again, and clamping the wire clamp with more torque (as this is just a check to see that the reglued magnet configuration is compatible with the OSEM coil positions on the cage). Before air baking the cage, we will have the old wire grooves removed, and then suspend the optic with a fresh loop of wire after the bake
- We could not check the magnet-OSEM alignment because of the slipping of the wire through the clamp. We decided against pushing on tonight
- Optic is currently in the cage, resting on the bottom EQ stops and with all face EQ stops within 1mm of the optic. The OSEM coils have not been inserted into the holders
Regarding the vacuum bake of the optics: why do we want to do this again? Koji mentioned that the EP30-2 curing process does not require a bake, and there is also no mention of requiring a vacuum bake in the EP30-2 gluing guide. Is there any other reason for us to vacuum bake the optic? |