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| * Type B Past Week Summary * Fabian finished dummy BS assembly. * Mark and Tatsumi-san glued magnets into both types of BS optic flags, and discs into BS IM flags. [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=1815 |klog]] Two optic flags had to be redone because the magnets moved while the glue was drying. Hirata-san helped remove the magnets with acetone in the ultrasonic cleaner. [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=1818|klog]] * Tatsumi-san, Fabian and Mark took the dummy BS to Kashiwa and glued the flags and prisms. [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=1821|klog]] We will check status on Mon 6/13. * Hirata-san measured another filter. * Hirata-san washed a batch of parts. * Hirata-san worked on work platforms for the installation. * Hirata-san looked for a crane scale for use at the site. (We decided the 500 kg version of the one used at TAMA.) * Hirata-san worked on making some guide parts for the PI installation (Misumi parts with minor additional machining from ATC). * We finalized a design for simple SS mirror parts for the dummy BS with Akutsu-san. They will be made by ATC. * Mark worked on list of items for purchase in FY2016 and on the schedule. * Fabian did more work on the IM assembly. It is nearly done and he will start on the RM next week. * Type B ongoing issues * Wires * Need to decide RM wire thickness and order. Lead time is a few days from Nilaco. * 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 * Ballast masses for payload * Initial batch received - ordered extra smaller ones to allow for adjustments. * Lower breadboard stuff * '''Need to be incorporated into the procedure document. Discuss with Takahashi (Mark)''' * 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 - expected 6/8. * 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, Fabian, Enzo, Perry, Hirata-san): * We craned in the PI. * We assembled the thrust bearing holder that receives the PI-SF rod. (The recess for the bearing was very slightly too small and had a burr near a retaining screw hole that prevented the bearing from seating properly, and so it required filing and re-cleaning.) * We hooked the SF and lowered the jacks under the SF to suspend the SF/... section. * The top filter rose when unlocked, and required about 1.8 kg to send it back down. Therefore we may be OK - the top filter seems to have about 8 kg more capacity than as measured by G&M. The hex cable clamp (≈0.25 kg) and the cables between the PI and SF still have to be added, but we can get an extra 3 kg by removing one of the three Cu damper segments (and rearranging the other two). * Hirata-san built and installed three LBB blade units. * Enzo kept debugging the SF LVDT. We repaired several broken wires, but it's still not behaving correctly. We suspect the ordering of the three coils (input output and excitation) may not be right. If so, we should be able to fix it with an adapter cable without removing the SF cap. ==== Plan for coming weeks ==== For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]]. Week of 5/1: * No activity (Golden Week). Week of 5/8: * Commence work Tuesday 5/9. * Remove PI temporarily. * Continue debugging SF LVDT (removing cap if necessary). * Investigate possible mis-alignment between the tips of the LBB blades and the holes for the rods going down to the damper ring. * Add magnets to upper SF damper ring. * Reinstall PI, this time with rods and damper ring. * Reinstall PI-SF rod, this time with hex cable clamp. * Install PI yaw stepper. * Wire up PI yaw stepper and vertical fishing-rod steppers. * Route cables from SF to PI (may involve removing part of Cu damper). Week of 5/15: * Enzo from Tuesday 5/16 (driving test), rest of team from Monday. * Prepare for PR2 bellows removal on 5/15 (move table with tools). * Wire up PI horizontal LVDTs and steppers. * Install geophones. * Unlock IP, re-level PI to center PI, add arc weights as required. |
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, Perry, Hirata-san):
- We craned in the PI.
- We assembled the thrust bearing holder that receives the PI-SF rod. (The recess for the bearing was very slightly too small and had a burr near a retaining screw hole that prevented the bearing from seating properly, and so it required filing and re-cleaning.)
- We hooked the SF and lowered the jacks under the SF to suspend the SF/... section.
The top filter rose when unlocked, and required about 1.8 kg to send it back down. Therefore we may be OK - the top filter seems to have about 8 kg more capacity than as measured by G&M. The hex cable clamp (≈0.25 kg) and the cables between the PI and SF still have to be added, but we can get an extra 3 kg by removing one of the three Cu damper segments (and rearranging the other two).
- Hirata-san built and installed three LBB blade units.
- Enzo kept debugging the SF LVDT. We repaired several broken wires, but it's still not behaving correctly. We suspect the ordering of the three coils (input output and excitation) may not be right. If so, we should be able to fix it with an adapter cable without removing the SF cap.
Plan for coming weeks
For more detail, see KAGRA/Subgroups/VIS/TypeB/ToDo.
Week of 5/1:
- No activity (Golden Week).
Week of 5/8:
- Commence work Tuesday 5/9.
- Remove PI temporarily.
- Continue debugging SF LVDT (removing cap if necessary).
- Investigate possible mis-alignment between the tips of the LBB blades and the holes for the rods going down to the damper ring.
- Add magnets to upper SF damper ring.
- Reinstall PI, this time with rods and damper ring.
- Reinstall PI-SF rod, this time with hex cable clamp.
- Install PI yaw stepper.
- Wire up PI yaw stepper and vertical fishing-rod steppers.
- Route cables from SF to PI (may involve removing part of Cu damper).
Week of 5/15:
- Enzo from Tuesday 5/16 (driving test), rest of team from Monday.
- Prepare for PR2 bellows removal on 5/15 (move table with tools).
- Wire up PI horizontal LVDTs and steppers.
- Install geophones.
- Unlock IP, re-level PI to center PI, add arc weights as required.