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⇤ ← Revision 1 as of 2018-01-30 23:53:20
Size: 2958
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Size: 1698
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| Deletions are marked like this. | Additions are marked like this. |
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| * Re-attached the oplev reflectors. | * Aattached again the oplev reflectors. |
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| * For this purpose an oplev viewport was installed in -Y+X direction at the TM level (Hasegawa). | |
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| * Attached a heat link, partly. * Set back the WAB suspension to its nominal position on the optical table in the chamber, and fixed with screws to the optical table. * It was tricky to take out the misumi bars underneath the WAB suspension in the saving mode; some of the suspension's weight was still on one of the bars, so we loosened the screws again to lift slight up whole the WAB suspension and were able to take out the bar in the end. * Thought the WAB suspension needed to go back to the SUS desk outside of the chamber, but we found it would be possible to do balancing of the suspension being in the chamber so far. * Detached two damper plate suspensions. (Tricky again.) * Replaced the neodymium magnets on the damper plate to SmCo magnets. (Trick again) * Four neodymium cylindrical magnets for each iron plate; eight SmCo square magnets insted. * Probably needed to design a '''''patterned template''''' for aligning the magnets for the next time. * Attached two damper plate suspensions. (Tricky again.) * Detached two triangle protectors; '''''now the WAB is suspended'''''; this is the first time to make a baffle suspended in KAGRA! * Shook slightly the WAB by hands and checked how the damping would be... so far nice?? * Lined two cables with burndy connectors from the chamber (P22 and P23) to the outside of the clean booth along with the work above. |
* Attached a heat link partly, after the protectors were attached again. * Helped cabling to the digital system (Miyo). |
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| * Learn how to attach pins to electric cables of the thermometers (AWG36). | |
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| * Attach heater plates? | |
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| * Place burndy cables toward outside? | |
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| * Pick up OptoSigma parts sent to Akutsu. * Pick up phosphor bronze wires sent to Akutsu. |
20180130
[[]]
Today's activities
Workers: Akutsu, Simon, Miyo, Hasegawa
- Attached the protectors again.
- Aattached again the oplev reflectors.
- Attached heaters.
Attached 4 out of 6 thermometers temporally (without the metal sheets!!!).
- Set up the oplev.
- For this purpose an oplev viewport was installed in -Y+X direction at the TM level (Hasegawa).
- Detached the protectors to see how the suspended WAB got tilted.
Simon's memo...
- Attached a heat link partly, after the protectors were attached again.
- Helped cabling to the digital system (Miyo).
[Ongoing] Need cares of water springs from anchor bolts for oplev pylons.
[Ongoing] Need to confirm what are the scratch lines made by the measurement by the KEK team last week.
Next plan
- Learn how to attach pins to electric cables of the thermometers (AWG36).
Set up oplev to check how the damping would be now after the replacement of the damping magnets.
- Check the reproducibility of the alignment of the suspension among several modes.
- Try to connect burndy pins to the heaters??
- Check heights of several points.
- Wash the coil in ethanol at Univ. of Toyama...?
- Take care of water spring??
Wanted!
Stages outside the chamber to ease wiping our legs.
Good rail(?) to move the WAB suspension in the cryostat in the main beam direction.
Chain block? to support the load in the chamber.
- Cutters and scissors!!
- A clock to know the time easily.
A fiber cleaner to connect oplev source parts; need to get back from Yend.
- M6 screw set.