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| * Type B Past Week Summary * Mark did a Type B schedule presentation at the Extended Chiefs Meeting. It was decided to order a second assembly frame so that the BS/SR2/SR3/SRM installations can overlap more. * Mark and Hirata-san helped Mirapro construct the assembly frame ([[https://goo.gl/photos/tVGoebw7FTRMAYB2A|photos]]). * Mark and Hirata-san took the jacks and adapter plates off the frame, and cleaned them to remove as much of the original grease as possible. Takahashi-san has offered to re-grease them with vacuum grease. * Mark and Hirata-san wiped down the assembly frame and put the clean bag on it. * Saito-san, Ohishi-san and several people from Mirapro adjusted the position of the BS chamber. * Mark plugged the geophones back into the PR2 rack and checked that the repaired cable was working. * Fabian did more pre-assembly of the RM/IM/IRM. * Takahashi-san ordered 10 mm diameter x 10 mm long magnets for the IM flags. * Mark inspected the SR2 section of the clean booth to see where SR2 assembly could be done. The slot in the ceiling for the crane runs in the ±X direction (at right angles to that for the BS), and there are suitable space on both the +X and the -X sides of the SR2 tank. * Hasegawa-san (of Hirose-san's lab) took delivery of the cup for removing the prisms on the dummy BS. It fits well. * Tatsumi-san ordered [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5357|modifications]] to the BS gluing jig to make it easier to remove the pieces holding the flags after the flags are attached. The parts are expected Fri 7/8. He also ordered more EP30, but this won't arrive until the week of 7/18. * Type B ongoing issues * Wires * Need to decide RM wire thickness and order BS and RM wires. Lead time is a few days from Nilaco. * OSEMs * Akutsu-san is working to get wide-mouth OSEMs * Longer cables for BF->PI and SF->PI. * Connectors RECEIVED, cables being made. * SR machining test ongoing. * Lower breadboard stuff * Installation to be incorporated into the procedure document. Mark/Takahashi to discuss. * Breadboard springs (in manufacture, expected end of July) * Nail-head parts - RECEIVED. * Documents * BS Assembly Procedure [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235| E1504235]], [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|E1504235 draft]] * To-do list for Fabian/Hirata-san during Mark's vacation * Finish assembly of BS IM, RM and IRM (Fabian). * Weigh IM/RM/IRM (Fabian, Hirata) * Pack/ship IM/RM/IRM to Kamioka (Hirata/Fabian). * Analyze geophone data (Mark, Shoda) * Remove glue from dummy BS face (Fabian). * Remove prism from dummy BS (Hirose, Fabian?) * Reglue flags and prisms (Tatsumi, Fabian) * Buy wire for BS and RM (Hirata) * Clean wire for BS and RM (Hirata) * Do fit/function test of winches (Fabian/Hirata) * Ship winches to Kamioka (Hirata/Fabian) * Work on BS simulation (Fabian) * Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) * Apply vacuum grease to jacks for BS assembly frame (Takahashi) * Write more of payload assembly procedure (Fabian) * Write more of main assembly procedure (Mark) * Longer term to-do list * Do BS Simulink model (Mark, Kokeyama) * Do 2D drawings of SR2 parts (Hirata) * Redesign SRx IM wire clamps for larger prisms, remachined RMs. * Order SRM/PRM parts (Hirata/Shoda) * Order SRx fasteners (Hirata) * Check SR RM machining test progress (Hirata) |
=== 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. At Mitaka (Hirata-san: * Hirata-san got a quotation about optical bench from Mirapro and contacted them about reducing cost. * He asked Suzuki-san (Tokyo university) to order them (delivery date is 10/24, so far). * He modified SR assembly frame design (from Fabian) and asked Mirapro for quotation. * He liaised with Koshin-shoko about modification of BS LBB blade springs. * He asked ATC for making t4.5 ballast mass for PR. He washed them and sent them to Kamioka with the PR thrust bearing. * He worked on the 3D model of SR3 SUS wires, and making a list for quotation. ==== Plan for week of 8/21 ==== 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; readjust 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 ==== Kamioka: Mark, Ohishi, Fabian, Enzo, Hirata-san, Yoshioka-kun (Tue, Wed, Fri), Kozu-kun. * ==== 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.
At Mitaka (Hirata-san:
- Hirata-san got a quotation about optical bench from Mirapro and contacted them about reducing cost.
- He asked Suzuki-san (Tokyo university) to order them (delivery date is 10/24, so far).
- He modified SR assembly frame design (from Fabian) and asked Mirapro for quotation.
- He liaised with Koshin-shoko about modification of BS LBB blade springs.
- He asked ATC for making t4.5 ballast mass for PR. He washed them and sent them to Kamioka with the PR thrust bearing.
- He worked on the 3D model of SR3 SUS wires, and making a list for quotation.
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; readjust 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
Kamioka: Mark, Ohishi, Fabian, Enzo, Hirata-san, Yoshioka-kun (Tue, Wed, Fri), Kozu-kun.
Vacation Info
Fabian: Fri 8/4 through Mon 8/21 Mark: TBD Mid-Oct