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40m
QIL
Cryo_Lab
CTN
SUS_Lab
TCS_Lab
OMC_Lab
CRIME_Lab
FEA
ENG_Labs
OptContFac
Mariner
WBEEShop
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| 40m Log |
Not logged in |
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 Mon Jul 4 10:30:37 2016, ericq, Update, General, Preliminary vent plans
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 Tue Jul 5 17:14:02 2016, ericq, Update, General, Vent progress 
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Tue Jul 5 19:10:41 2016, rana, Update, General, Vent progress
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Tue Jul 5 21:51:35 2016, ericq, Update, General, Vent progress
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Tue Jul 5 23:38:42 2016, gautam, Update, General, Vent progress - ETMX SUS Coil driver electronics investigation
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Wed Jul 6 22:58:01 2016, gautam, Update, General, Vent progress - ETMX SUS Coil driver electronics investigation
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Thu Jul 7 00:25:07 2016, ericq, Update, General, Vent progress - ETMX SUS Coil driver electronics investigation
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Thu Jul 7 10:49:03 2016, gautam, Update, General, Vent progress - ETMX SUS Coil driver electronics investigation
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Fri Jul 8 11:35:45 2016, gautam, Update, General, Vent progress - ETMX SUS Coil driver electronics investigation
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Fri Jul 8 11:48:09 2016, Koji, Update, General, Vent progress - ETMX SUS Coil driver electronics investigation
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Fri Jul 8 14:03:26 2016, ericq, Update, General, ETMX removed from suspension
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Fri Jul 8 16:33:26 2016, ericq, Update, General, ETMX removed from suspension
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Fri Jul 8 20:44:09 2016, Koji, Update, General, ETMX removed from suspension 6x
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Sun Jul 10 15:38:01 2016, ericq, Update, General, ETMX in guiderod/standoff gluing fixture 6x
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Tue Jul 12 16:08:00 2016, ericq, Update, General, ETMX ruby guided gluing
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Wed Jul 13 21:13:51 2016, Koji, Update, General, ETMX guide rod gluing / ETMY Magnet gluing 13x
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Thu Jul 14 22:29:57 2016, ericq , Update, General, ETMX guide rod gluing / ETMY Magnet gluing
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Fri Jul 15 16:23:51 2016, ericq , Update, General, Gluing setbacks
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Tue Jul 19 16:39:29 2016, Lydia, Update, General, ETMX magnet gluing/guiderod excess glue removed
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Wed Jul 20 13:58:55 2016, Steve, Update, SUS, SUS damping out of vac chamber
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Thu Jul 21 17:01:59 2016, ericq, Update, General, ETMX magnet gluing/guiderod excess glue removed
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Fri Jul 22 23:03:23 2016, gautam, Update, General, ETMX suspension - progress
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Sun Jul 24 03:43:56 2016, ericq, Update, General, Magnet positioning
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Mon Jul 25 13:01:49 2016, ericq, Update, General, ETMX suspension - progress
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Mon Jul 25 13:47:19 2016, rana, Update, General, ETMX suspension - progress
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Mon Jul 25 17:01:54 2016, Steve, Update, SUS, ETMX suspension - progress
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Mon Jul 25 20:37:46 2016, gautam, Update, General, ETMX suspension - Side OSEM test
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Tue Jul 26 18:07:57 2016, gautam, Update, General, ETMX suspension - Further OSEM Tests
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Thu Jul 28 03:22:28 2016, ericq, Update, General, ETMX magnets re-reglued
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Thu Jul 28 13:49:44 2016, gautam, Update, General, ETMX magnets re-reglued
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Thu Jul 28 17:48:17 2016, gautam, Update, General, ETMY LR magnet broke off
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Thu Jul 28 22:43:03 2016, rana, Update, General, ETMY UL magnet broke off
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Wed Aug 3 10:52:03 2016, Steve, Update, General, ETMY soaking dish
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Fri Jul 29 03:32:30 2016, ericq, Update, General, ETMX suspended once more
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Fri Jul 29 13:17:34 2016, Koji, Update, General, Oven
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Thu Jul 14 01:00:33 2016, Koji, Update, General, ETMX ruby guided gluing
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Thu Jul 28 16:43:01 2016, Lydia, Update, General, ETMX aluminium standoff groove condition
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Fri Jul 8 21:22:38 2016, gautam, Update, General, Vent progress - ETMX SUS Coil driver electronics investigation
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Wed Jul 6 09:34:26 2016, Steve, Update, General, PRM sensing voltage LR
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Wed Jul 6 19:36:45 2016, Koji, Update, General, SUS Vmon
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Thu Jul 7 15:23:39 2016, ericq, Update, General, SUS Vmon
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Thu Jul 7 16:05:55 2016, Koji, Update, General, SUS Vmon
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Thu Jul 7 17:12:50 2016, Johannes, Update, General, Vent progress
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Tue Jul 12 23:51:16 2016, Johannes, Update, General, Vent progress - ETMY inspection
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Wed Jul 13 00:38:25 2016, Johannes, Update, General, Vent progress - ETMY attempted repositioning
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Tue Jul 19 13:21:42 2016, Johannes, Update, General, Vent progress - ETMY attempted repositioning
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Sun Jul 10 17:33:00 2016, ericq, Update, General, Vent progress
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Mon Jul 11 15:13:22 2016, gautam, Update, General, Vent progress: in-date First Contact procured
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Message ID: 12347
Entry time: Thu Jul 28 13:49:44 2016
In reply to: 12345
Reply to this: 12349
12351
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| Author: |
gautam |
| Type: |
Update |
| Category: |
General |
| Subject: |
ETMX magnets re-reglued |
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| Quote: |
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[gautam, ericq]
Brief summary, some pictures and such follow in the daytime.
- All magnets enclosed by OSEMS were knocked off. (This means one side magnet remained, on the guiderod side)
- Glue residue cleaned from ETMX
- Dumbbell feet were cleaned of glue, finely sanded, re-scored with a razor blade
- The magnet gluing fixture was painstakingly aligned multiple times, adjusting the shim height to get a magnet/wire groove clearance of 0.25-5mm
- Epoxy mixed, test batch cured perfectly, applied to 5 dumbbells (after triple-checking polarities) and set to glue.
The epoxy needs at least 12 hours of room temperature air curing, so no touchy until 3:30PM on Jul 28!
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Attachment #1 - After multiple trials shimming the magnet gluing rig with teflon spacers, we think that we managed to find a configuration in which the side magnet edge is between 0.25 mm and 0.5 mm from the groove in the ruby wire standoff in which the wire will sit.
Attachment #2 - Zoomed in view of the side magnet.
Of course we won't know until we suspend the optic, but we believe that we have mitigated the misalignment between the side OSEM axis and side magnet.
The short term plan is to try and suspend ETMY in the end chamber and have a look at the alignment between all magnets and OSEM coils for it. Once the epoxy on ETMX is cured, we will try and suspend the optic again, this time taking extra care while tightening the wire clamps.
Unrelated to this work: Bob just informed me that we had left the air bake oven on overnight - this unfortunately melted the plastic thermocouple inside. |
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