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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 wants to try the cup that had been made for the PR2 on the actual PR2 and 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. * Fabian finished the IM assembly and started on the IRM and RM. Some of the IRM panels had been improperly wrapped and really should be re-cleaned. The MPC (multi-purpose cube) on the RM will need some rework. * Mark scheduled 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) - no action since last week * Installation stuff * Crane scale - quote received * Work platforms - 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. * Clean bag - 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]] |
=== Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Kozu-kun): * We couldn't count for a bubble level, so we removed a service port cover, searched again on top of the BF and found it. * We locked the LBB, put the table KOACH filters on the table. Ohishi-san removed the FC in two stages (AR side on Tue, HR side on Fri). * Ohishi-san measured the height of the SS and optic relative to the tank and found the optic was 3 mm low but the SS was 2 mm high. According to the GAS LVDTs, the suspension had not sagged but was 1.7 mm high. * Therefore we raised the suspension by 9 quarter-turns of the tank jacks (4.5 mm) to get the optic in the right position after (future) downward adjustment of the GAS filters. * We put the GAS LVDT calibration data as offsets and gains in the LVDTINF filters so the output would be height in µm relative to nominal. * We calibrated the IP LVDTs. We had worked around a mechanical interference due to the poor design of the old LVDTs by setting them to be 4 mm off-center with the IP locked centrally, but we discovered this was overkill and we have lost some linear range on the LVDT sensor in the opposite direction. If we have time we may move the LVDT bases 1-2 mm to a compromise position. * We worked with Simon to get the OL aligned and to learn the adjustment procedure. At Mitaka (Hirata-san): * Hirata-san met with manufacturers and requested quotes. * Hirata-san made many assembly drawings for sections of the SR. * Hirata-san worked on compiling the SR inventory. ==== Plan for week of 10/10 ==== Kamioka: Mark, Fabian, Enzo, Ohishi-san, Kozu-kun. Mitaka: Hirata-san Holiday Mon 10/9, Open Day prep Fri 10/13.<<BR>> * Tune IP, do LVDT/stepper calibration. * Remove First Contact, try OL. * TFs, final preparation for alignment in week of 10/16. * SR procurement. * Design ballast for LBB. * Continue design of improved PI yaw adjustment, also improved F0 FR. ==== Plan for week of 10/16 ==== Kamioka: all but Mark, Hirata-san Mitaka: Hirata-san * Work with alignment team. * SR procurement ==== Vacation Info ==== Mark: 10/16-24 |
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, Fabian, Enzo, Hirata-san, Kozu-kun):
- We couldn't count for a bubble level, so we removed a service port cover, searched again on top of the BF and found it.
- We locked the LBB, put the table KOACH filters on the table. Ohishi-san removed the FC in two stages (AR side on Tue, HR side on Fri).
- Ohishi-san measured the height of the SS and optic relative to the tank and found the optic was 3 mm low but the SS was 2 mm high. According to the GAS LVDTs, the suspension had not sagged but was 1.7 mm high.
- Therefore we raised the suspension by 9 quarter-turns of the tank jacks (4.5 mm) to get the optic in the right position after (future) downward adjustment of the GAS filters.
- We put the GAS LVDT calibration data as offsets and gains in the LVDTINF filters so the output would be height in µm relative to nominal.
- We calibrated the IP LVDTs. We had worked around a mechanical interference due to the poor design of the old LVDTs by setting them to be 4 mm off-center with the IP locked centrally, but we discovered this was overkill and we have lost some linear range on the LVDT sensor in the opposite direction. If we have time we may move the LVDT bases 1-2 mm to a compromise position.
- We worked with Simon to get the OL aligned and to learn the adjustment procedure.
At Mitaka (Hirata-san):
- Hirata-san met with manufacturers and requested quotes.
- Hirata-san made many assembly drawings for sections of the SR.
- Hirata-san worked on compiling the SR inventory.
Plan for week of 10/10
Kamioka: Mark, Fabian, Enzo, Ohishi-san, Kozu-kun. Mitaka: Hirata-san Holiday Mon 10/9, Open Day prep Fri 10/13.
- Tune IP, do LVDT/stepper calibration.
- Remove First Contact, try OL.
- TFs, final preparation for alignment in week of 10/16.
- SR procurement.
- Design ballast for LBB.
- Continue design of improved PI yaw adjustment, also improved F0 FR.
Plan for week of 10/16
Kamioka: all but Mark, Hirata-san Mitaka: Hirata-san
- Work with alignment team.
- SR procurement
Vacation Info
Mark: 10/16-24