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| * Type B Past Week Summary * Fabian worked on IM and dummy BS assembly: [[https://photos.google.com/share/AF1QipMNVSExyP3TuyhK4s_VD-ARDlNoCPCf13ZDbHUlwOw14AKgj4XUe0vYg27dQ12icQ?key=SjJ0dXJ1bjN2OGVCN3d6RnoySEtFSjVJUmVwSlZR|photos1]], [[https://photos.google.com/share/AF1QipPQdoB5vYN1VcD32TkA4QSGldODvKRwiT5h-m122ahSpWmFyyrO5MX-9ajL1LeRIg?key=VFFuUVktcEtlMURQUldhZUlRcGFhbzNDeU5IN3NB|photos2]] * A hole in a picomotor holder was too small. ATC staff solved this isue quickly and Hirata-san cleaned the piece. * Some ballast discs for the dummy optic were dirty (seen by visual inspection). Hirata-san cleaned them. * Some arrows were cleaned from the mirrors for the dummy optic. * Hirata-san worked on checking Mirapro's assembly frame design - some minor issues with rail system found. * Hirata-san measured another filter. * Hirata-san washed a large batch of parts. * All parts for gluing of dummy BS are in hand. We arranged with Tatsumi-san to glue magnets at Mitaka on 6/6, glue flags at Kashiwa on 6/8, and inspect bonds and bring dummy BS back to Mitaka 6/13. * Mark worked on solutions to allow a [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/TypeB/dummyBS|larger mirror on dummy BS]]. After discussions with Simon and Akutsu-san we decided to go with a stainless steel plate solution. The gluing can go ahead and we can attach the plates later. * Mark worked on list of items for purchase in FY2016. * Mark worked more on [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235|E1504235 BS Assembly Procedure]] ([[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|Draft on OneDrive]]) |
=== Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Fabian, Enzo, Hirata-san): * We disconnected the in-vacuum and in-air cabling from the feedthroughs. * We removed crossbars below BF and SF. * We set the SF damper to 4 mm clearance. * We adjusted the jacks to nominal height. * We removed the geophones and PI yaw stepper for craning. * We craned the suspension into the tank, and hooked the LBB Cu ring. * We replaced the geophones etc. * We unlocked all but the IP and adjusted the jacks until the pendulum was centered in the security structure. * We unlocked the IP and adjusted to to center with the jacks and fishing rods. * We craned the vacuum tank lid+ring back on, and then removed just the lid (only). * We unclamped the LBB damper rings and removed the spacers. * We removed the blocks and shims supporting the LBB, inserted the long screw feet and hooked the LBB to the Cu damper ring. * We added 2*31.5 kg of ballast to the LBB, which got the blades to the point where firm pressure would depress the tips. * We reconnected the in-vacuum cabling. In ≈15 places we opted to omit the Type 1 cable and use a F-F gender bender. * We reconnected all but four of the in-air cables. ==== Plan for week of 6/26 ==== Mark and Enzo at Kamioka: * Double-check where gender-benders were used. * Finish connecting in-air cabling. * Debug all cabling. * Work with Simon to set up LSOL. Fabian at Mitaka: * Design final ballast masses for IM, BF and SF assuming no BF rebuild (needs to be adaptable). * Check all items for BS flag/prism gluing are available (prisms, flags, jigs, mirror box, glue, scale, mixing tools etc). Hirata-san at Mitaka: * Do new 3D CAD: * BS Test Hang build, with top of tank, full suspension, and LBB damper all reversed. * Final BS build, as above, but with everything BF down rotated back to original. * In-tank version. * On-assembly-frame version. (Adjust jack positions if possible, or leave for Mark to do.) * SR2 on BS assembly frame. (Adjust jack positions if possible, or leave for Mark to do.) |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past week report
At Kamioka (Mark, Fabian, Enzo, Hirata-san):
- We disconnected the in-vacuum and in-air cabling from the feedthroughs.
- We removed crossbars below BF and SF.
- We set the SF damper to 4 mm clearance.
- We adjusted the jacks to nominal height.
- We removed the geophones and PI yaw stepper for craning.
- We craned the suspension into the tank, and hooked the LBB Cu ring.
- We replaced the geophones etc.
- We unlocked all but the IP and adjusted the jacks until the pendulum was centered in the security structure.
- We unlocked the IP and adjusted to to center with the jacks and fishing rods.
- We craned the vacuum tank lid+ring back on, and then removed just the lid (only).
- We unclamped the LBB damper rings and removed the spacers.
- We removed the blocks and shims supporting the LBB, inserted the long screw feet and hooked the LBB to the Cu damper ring.
- We added 2*31.5 kg of ballast to the LBB, which got the blades to the point where firm pressure would depress the tips.
- We reconnected the in-vacuum cabling. In ≈15 places we opted to omit the Type 1 cable and use a F-F gender bender.
- We reconnected all but four of the in-air cables.
Plan for week of 6/26
Mark and Enzo at Kamioka:
- Double-check where gender-benders were used.
- Finish connecting in-air cabling.
- Debug all cabling.
- Work with Simon to set up LSOL.
Fabian at Mitaka:
- Design final ballast masses for IM, BF and SF assuming no BF rebuild (needs to be adaptable).
- Check all items for BS flag/prism gluing are available (prisms, flags, jigs, mirror box, glue, scale, mixing tools etc).
Hirata-san at Mitaka:
- Do new 3D CAD:
- BS Test Hang build, with top of tank, full suspension, and LBB damper all reversed.
- Final BS build, as above, but with everything BF down rotated back to original.
- In-tank version.
- On-assembly-frame version. (Adjust jack positions if possible, or leave for Mark to do.)
- SR2 on BS assembly frame. (Adjust jack positions if possible, or leave for Mark to do.)