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| * Type B Past Week Summary * Fabian took photos of the cleanroom in the ATC to help decide whether it is a good place to assemble PIs for Type A/B. * Hirata-san ordered and received wire for the BS and RM (will be cleaned 7/19). * Hirata-san received remachined locking parts for the IM (will be cleaned 7/19). * Hirata-san ordered additional Misumi parts to be used with the IM locking parts. * Fabian and Hirata-san weighed the masses that they've been constructing in the cleanroom and found a 600 g discrepancy from the Inventor (too light) for the IM. Although the density assumed in the Inventor agrees with spec sheet values, it doesn't match the parts. Adjusting the density to match a few key parts reduces the discrepancy to 60 g. More investigation is planned. * Hirata-san ordered a medium-capacity scale to weigh the individual parts more precisely and help locate the discrepancy. * Hirata-san organized to do a fit/function test of the BS winches and training session with Ikenoue-san of ATC on 7/25. * Hirose-san and his team successfully removed the misglued prisms from the dummy BS. * Fabian travelled to Kashiwa and removed most of the glue from the face of the dummy BS (where the flags had been). There is still some adhesive remaining on both the face and barrel, which will require more work in a second trip. * Shoda-san took a suitable segment of geophone noise data for analysis. Fabian will track down the calibration factors. * Hirata-san worked on 2D drawings for the PI cable clamps and the magnetic damper for the lower breadboard. * Hirata-san worked on the 3D assembly for SR2. * Type B ongoing issues * 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) * 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 during Mark's vacation * Apply grease to jacks for assembly frame (Takahashi) - DONE * Finish assembly of BS IM, RM and IRM (Fabian) - DONE * Weigh IM/RM/IRM (Fabian, Hirata) - DONE but anomalies found. * Pack/ship IM/RM/IRM to Kamioka (Hirata/Fabian). * Analyze geophone data (Fabian/Shoda) - data taken by Shoda-san; Fabian to find calibration factors. * Remove glue from dummy BS face (Fabian) - partly done. * Remove prism from dummy BS (Hirose, Fabian?) - DONE * Reglue flags and prisms (Tatsumi, Fabian) * Buy wire for BS and RM (Hirata) - DONE * Clean wire for BS and RM (Hirata) - 7/19 * Do fit/function test of winches (Fabian/Hirata) - ORGANIZED for 7/25 * Ship winches to Kamioka (Hirata/Fabian) * Work on BS simulation (Fabian) * Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - just started. * 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, 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.)