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==== Past week report ==== At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san): * We set things up again after the floor coating work. * We moved the PI into the second floor of the cleanbooth: * We cleared a path for the forklift (moving the portable cleanroom, worktable, power cables, vacuum pumps and other obstacles). * We got Saito-sensei to move the PI to the +Y side of the cleanbooth. * We washed and cling-wrapped a pallet. * We got Miyoki-san to disconnect the cables and curtain blocking the crane slot (and reconnect them afterwards). * We added some temporary crossbars in the top of the assembly frame and stored the SF cap on them to get it out of the way. * We craned in the pallet and set it up to bridge three floor joists. * We craned in the PI using Saito-san's adapter. * We couldn't find the original screws for the three PI transport plates so we substituted some others - fortunately there was no galling. * We had to connect the adapter to the crane with a sling because the ring for the hook was slightly too small). * We did a lot of cabling work: * We routed all the BF cables over the BF cap, up through the cable clamp on the SF-BF rod and up to the SF. (We had to redo a few because the Type 3 cable was at the flange end instead of the Type 1.) * We connected up the SF LVDT and FR stepper. * We started on rebalancing the BF (which had been perturbed by the weight and tension of all the cables). We got it rather better, but it needs more work. * We made another batch of anti-feedthrough adapters. |
==== Past two weeks report ==== Kamioka (Mark, Enzo, Kozu-kun): * Supported IA team. * Replaced LPCDs for IM OSEMs with HPCDs for increased pitch/yaw range. * Re-zeroed OL after significant change of beam position during IA. * Re-laid-out OL to improve focus of lens to LEN QPD. * Offloaded the pitch/yaw actuation at the IM OSEMs using the IM pitch/yaw picos. * Enzo worked on design of control loops using the OL. * Kozu-kun worked on diagonalizing the OL. |
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==== Plan for coming weeks ==== For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]]. |
Mitaka (Fabian, Hirata-san): * Fabian did mechanical design: * F0 FR * Cable clamps for the SR IP base. * New SR recoil ballast masses. * LBB ballast. * Update of BS 3D CAD with the as-built ballast. * Hirata-san * made and updated inventory list for SR. * made order list and asked some quotes. * Ordered some parts. * Talked with mirapro about SRM optical bench. * Made some drawings for SR preparation. |
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Week of 4/10: * Hirata-san does scissor lift training 4/10. * Perry in Tokyo 4/10. * Debug/fix dead OSEM channel, TM-H4. * Debug BF/SF LVDTs. * Adjust BF pitch/roll. * Do TF from SF LVDT actuation. * Install temporary ballast mass in SF. * Lift SF/BF/... section and check total weight and SF balance. * Continue swap of PI LVDT connectors (female->male) * Start preparing LBB spring units. * Install pico drivers in rack, create MEDM interface (with Miyo-kun), and undo temporary connection of picos to old controller and joystick. Week of 4/17: * Crane in PI. * Connect SF/BF... section. * Temporarily remove PI and adjust SF ballast if necessary. |
==== Plan for week of 11/13 ==== Enzo and Kozu-kun at Mitaka * Servos * Diagonalization of OL * TFs of BF * Documentation Mark and Fabian at Kamioka. * Mark attends commissioning workshop at U Toyama. * Support BF characterization work. * Prepare for mirror gluing. * Prepare for IM assembly. Hirata-san at Mitaka * SR procurement. * Get BS prism-gluing jigs reworked for use with PR/SR mirror box. ==== Plan for week of 11/20 ==== * Holiday on Thu 3/23 * Fabian at commissioning workshop * |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past two weeks report
Kamioka (Mark, Enzo, Kozu-kun):
- Supported IA team.
- Replaced LPCDs for IM OSEMs with HPCDs for increased pitch/yaw range.
- Re-zeroed OL after significant change of beam position during IA.
- Re-laid-out OL to improve focus of lens to LEN QPD.
- Offloaded the pitch/yaw actuation at the IM OSEMs using the IM pitch/yaw picos.
- Enzo worked on design of control loops using the OL.
- Kozu-kun worked on diagonalizing the OL.
Mitaka (Fabian, Hirata-san):
- Fabian did mechanical design:
- F0 FR
- Cable clamps for the SR IP base.
- New SR recoil ballast masses.
- LBB ballast.
- Update of BS 3D CAD with the as-built ballast.
- Hirata-san
- made and updated inventory list for SR.
- made order list and asked some quotes.
- Ordered some parts.
- Talked with mirapro about SRM optical bench.
- Made some drawings for SR preparation.
Plan for week of 11/13
Enzo and Kozu-kun at Mitaka
- Servos
- Diagonalization of OL
- TFs of BF
- Documentation
Mark and Fabian at Kamioka.
- Mark attends commissioning workshop at U Toyama.
- Support BF characterization work.
- Prepare for mirror gluing.
- Prepare for IM assembly.
Hirata-san at Mitaka
- SR procurement.
- Get BS prism-gluing jigs reworked for use with PR/SR mirror box.
Plan for week of 11/20
- Holiday on Thu 3/23
- Fabian at commissioning workshop