Differences between revisions 142 and 177 (spanning 35 versions)
⇤ ← Revision 142 as of 2017-05-18 17:18:39 →
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Editor: MarkBarton
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← Revision 177 as of 2017-08-18 11:08:37 → ⇥
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Editor: MarkBarton
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Deletions are marked like this. Additions are marked like this.
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At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san): 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.
Line 9: Line 16:
 * We removed the PI from the assembly frame.
 * We encountered a problem with the PI-SF rod jamming in the SF. We finally got it out by clamping a pig of vice grips to the rod and hammering. We found that the receptacle part was the right size (7.0 mm) but had been deformed around the edge. Hirata-san used a knife and sandpaper to lean up the edge and then ultrasonically cleaned it.
 * We cleared space for the PR2 team to remove a bellows from their tank.
 * We installed safety bars near the assembly frame at about waist height for someone on the tall ladder. We reinforced the clamps with cable ties.
 * We removed the LLB blade units from the PI, removed the blades from the clamps and sent the blades away for more rework to fix the length problem. Fortunately the tab section at the tip is fairly long, so we can just add a second hole further from the end.
 * We removed the SF cap and stored it on crossbars within the assembly frame.
 * We tested the SR fishing rod again, but it would only go up, not down. We found that reseting the driver fixed it, but we also moved the driver boxes into the cleanbooth to reduce the length of the motor cables. (Instead, we had to run some long DC and LAN cables.)
 * We adjusted the limit nut on the SF fishing rod to increase the range.
 * We removed one segment of the Cu ring on the SF cap and reconfigured the rest to be symmetrical.
 * Fabian designed a layout for the SF damper ring magnets that would work with the modified Cu ring, and placed the magnets with the template. The poles of the magnets were not on the expected faces so we had to stand the magnets up with the , 		==== Plan for week of 8/21 ====
Vacation: Fabian (Mon)<<BR>>
Internship: Kozu-kun (Mon-Fri)<<BR>>
Line 20: Line 20:
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.
Line 21: Line 31:
==== Plan for coming weeks ====
For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]].		 ==== Plan for week of 8/28 ====
Vacation: Fabian (Mon)<<BR>>
Internship: Kozu-kun (Mon-Fri)<<BR>>
Line 24: Line 35:
Week of 5/15:
 * Enzo from Tuesday 5/16 (driving test), rest of team from Monday.
 * Fix PI-SF rod jamming.
 * Remove PI and SF cap.
 * Continue debugging SF LVDT.
 * Reconfigure Cu damper ring on SF.
 * Add magnets to upper SF damper ring.
 * Add cable clamps on the PI (a few places are inaccessible when the PI is on the assembly frame).
 * Reinstall PI, this time with rods and damper ring.
 * Reinstall PI-SF rod, this time with hex cable clamp.
 * Prepare for PR2 bellows removal on 5/15 (move table with tools).
 * Cable/test PI horizontal LVDTs and steppers.
 * Install/cable/test geophones.
 		 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

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

KAGRA/Subgroups/VIS/TypeB/Minutes (last edited 2022-10-28 10:02:46 by fabian.arellano)