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Size: 1900
Comment:
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Size: 2427
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 8: | Line 8: |
| * We finished installing the RM OSEMs and installed the new Type5-2.2 and 5-2.4 OSEM cables. * We hung the RM and set its pitch. * We doubled-checked the BS and RM pitch, tightened the clamps and removed the winch system. * We installed the bottom section of the security structure to protect the RM/BS. * We lifted the IM/RM/BS section and weighed it. It was about 1.25 kg too heavy for the new BF, so we improvised a lighter set of ballast masses. * We installed the section of the security structure up to the BF ring, and the BF crossbars and jacks of the assembly frame. * We brought in the new BF. * We installed the BF-IRM rods and IRM top plate. * We reinstalled the IM flags and other items that had been taken off to use the winch system. * We hooked the BF-IM rod (with hex cable clamp). (We did not unlock the BF keystone.) * We cabled and tested the IM-PIT, IM-ROL and IM-YAW picos and the BF FR stepper (but not, yet, the BF LVDT). ==== Plan for week of 8/14 ==== Site closure: Mon, Tue<<BR>> Vacation: Fabian (Mon-Fri)<<BR>> Kamioka: Mark (Wed-Fri), Enzo (Wed-Fri), Yoshioka-kun (Wed, Fri), Ohishi (Thu-Fri).<<BR>> * Remove LBB blade units from PI, then remove blades and send for remachining. * Remove LBB rings from chamber and send for recleaning. * Unlock BF, adjust ballast masses on IM/RM/BS to correct pitch/roll/vertical. * Test, calibrate BF LVDT. Mitaka: Hirata-san (Mon-Fri)<<BR>> * SR Stuff |
* We removed the LBB damper rings from the tank and passed them to Takahashi-san for recleaning. Unfortunately two screws galled, one holding on a Cu segment, and one holding on a joint piece. * We removed the LBB blade units from the PI, removed the blades and shipped them off for rework. * We pulled out all the old in-air cabling. * We laid about 9 new in-air cables. * We wrapped/labelled the BS mirror box, the winch system, the trolley adapters, and many other tools that we do not expect to use any time soon. * We connected up, tested and calibrated the BF LVDT. * We adjusted the ballast mass on the IM to make it hang level and at the right height. However we had to reduce the weight by a further 686 g relative to the plan of 2017-08-09. We found a combination that was good except for the fact that it used round masses on the bottom corners, so we decided to have the 641 g rectangular masses cut down by 60 g each. Mesco was able to do this within 24 hours. We will reclean the parts on Friday afternoon and swap them in on Monday. |
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| Kamioka: Mark, Ohishi, Fabian (Tue-Fri), Enzo, Yoshioka-kun (Tue, Wed, Fri), Kozu-kun. | Internship: Kozu-kun (Mon-Fri)<<BR>> |
| Line 35: | Line 20: |
| Vacation Info: | Kamioka: Mark, Ohishi, Fabian (Tue-Fri), Enzo, Yoshioka-kun (Tue, Wed, Fri). * Swap in new IM ballast masses; tweak height and levelness. * Install side panels of IRM and OSEMs. * Route IRM OSEM cables, test/adjust IRM OSEMs. * Add BF cap; cable and test BF-1 and BF-2 picos. * Lift and weigh BF/IRM/IM/RM/BS; adjust ballast mass. * Crane in SF. * Try TFs with optical sensors. Mitaka: Hirata-san. * SR stuff. ==== Plan for week of 8/28 ==== Vacation: Fabian (Mon)<<BR>> Internship: Kozu-kun (Mon-Fri)<<BR>> Kamioka: Mark, Ohishi, Fabian (Tue-Fri), Enzo, Yoshioka-kun (Tue, Wed, Fri). * Swap in new IM ballast masses; tweak height and levelness. * Install side panels of IRM and OSEMs. * Route IRM OSEM cables, test/adjust IRM OSEMs. * Add BF cap; cable and test BF-1 and BF-2 picos. * Lift and weigh BF/IRM/IM/RM/BS; adjust ballast mass. * Crane in SF. * Try TFs with optical sensors. Mitaka: Hirata-san. * SR stuff. ==== Vacation Info ==== |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past week report
At Kamioka (Mark, Ohishi-san, Enzo, Yoshioka-kun, Kozu-kun):
- We removed the LBB damper rings from the tank and passed them to Takahashi-san for recleaning. Unfortunately two screws galled, one holding on a Cu segment, and one holding on a joint piece.
- We removed the LBB blade units from the PI, removed the blades and shipped them off for rework.
- We pulled out all the old in-air cabling.
- We laid about 9 new in-air cables.
- We wrapped/labelled the BS mirror box, the winch system, the trolley adapters, and many other tools that we do not expect to use any time soon.
- We connected up, tested and calibrated the BF LVDT.
- We adjusted the ballast mass on the IM to make it hang level and at the right height. However we had to reduce the weight by a further 686 g relative to the plan of 2017-08-09. We found a combination that was good except for the fact that it used round masses on the bottom corners, so we decided to have the 641 g rectangular masses cut down by 60 g each. Mesco was able to do this within 24 hours. We will reclean the parts on Friday afternoon and swap them in on Monday.
Plan for week of 8/21
Vacation: Fabian (Mon)
Internship: Kozu-kun (Mon-Fri)
Kamioka: Mark, Ohishi, Fabian (Tue-Fri), Enzo, Yoshioka-kun (Tue, Wed, Fri).
- Swap in new IM ballast masses; tweak height and levelness.
- Install side panels of IRM and OSEMs.
- Route IRM OSEM cables, test/adjust IRM OSEMs.
- Add BF cap; cable and test BF-1 and BF-2 picos.
- Lift and weigh BF/IRM/IM/RM/BS; adjust ballast mass.
- Crane in SF.
- Try TFs with optical sensors.
Mitaka: Hirata-san.
- SR stuff.
Plan for week of 8/28
Vacation: Fabian (Mon)
Internship: Kozu-kun (Mon-Fri)
Kamioka: Mark, Ohishi, Fabian (Tue-Fri), Enzo, Yoshioka-kun (Tue, Wed, Fri).
- Swap in new IM ballast masses; tweak height and levelness.
- Install side panels of IRM and OSEMs.
- Route IRM OSEM cables, test/adjust IRM OSEMs.
- Add BF cap; cable and test BF-1 and BF-2 picos.
- Lift and weigh BF/IRM/IM/RM/BS; adjust ballast mass.
- Crane in SF.
- Try TFs with optical sensors.
Mitaka: Hirata-san.
- SR stuff.
Vacation Info
Fabian: Fri 8/4 through Mon 8/21 Mark: TBD Mid-Oct