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| * Type B Past Week Summary * There were multiple issues with the dummy BS flag/prism gluing [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=1830 |klog]]. The sapphire prisms will need to be removed and reapplied. Hirose-san is going to organize this. He is trying the cup that had been made for the PR2 on the actual PR2. It works to confine the acetone, and we will see shortly how much soaking is required to get a prism off. We will then see if a new cup is needed for the BS (considering the different radius). * Hirata-san added the optical layout information to the BS Inventor assembly. He requested tank information from Mirapro so he can continue to do SR2/3/M. * Hirata-san worked on the crane height problem with Saito-sensei. They concluded that craning in the suspension is possible but will require not just the vacuum tank lid but the ≈30 cm section of tank below it to be removed. * Hirata-san liaised with Nakamura-san of Mirapro. Mirapro could start assembling the frame in the first week of July. * Fabian finished the IM assembly and started on the IRM and RM. Some of the IRM panels had been improperly wrapped and will be re-cleaned. The MPC (multi-purpose cube) on the RM will need some rework. * Mark did a top level schedule. * Mark released a draft (about half-finished) of [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235| JGW-E1504235 - BS Installation Procedure]]. * Mark updated [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3600| JGW-D1503600 - BS Suspension Cabling]] with a better arrangement for the IM and BF pico motor cables, as well as various other minor fixes. * Mark organized a review for Thursday 6/16. * 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 * Feedthrough Adapters * Need large quantity of male and female D-Sub 9, IDC ribbon connectors - Takahashi-san is getting a quote. * Can we make SR wire breakers bigger? * Fukushima-san will start on machining test soon (as of 5/27). * Not enough crane height problem (Hirata, Saito) - SOLVED * Installation stuff * Crane scale - quote received * Ballast masses for payload * Initial batch received - ordered extra smaller ones to allow for adjustments. * 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: quote from Mirapro received, not urgent, will be combined with assembly frame order. * 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]] |
=== 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