|
Size: 1249
Comment:
|
Size: 2491
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 5: | Line 5: |
| * Type B Past Week Summary * Mark and Hirata-san worked at Kamioka, with valuable help from Enzo (on loan from Type Bp team). * We got all the adapter cables for the BF made (Hirata-san did some work on Monday at Mitaka). * We installed the extension for the BF yaw pico on the IM pico adapter cable. * We got all the in-vacuum and in-air cabling for the IM OSEMs done. * We tried to install the stepper and LVDT adapter cables but realized we didn't have enough information on which wires was which. (We later tracked this info down but did not have time to do anything with it - we would have needed to do the rest of the in-vacuum and in-air cabling and set up the stepper motor and LVDT drivers, so we concentrated on the OSEMs.) * We plugged in the IM OSEMs, set gains and offsets, and did a noise test (analysis and klog pending). * We mounted the OSEMs on the IRM and routed the cabling neatly. * We released the suspension. * We adjusted the OSEM mounting plates to center the OSEMs on the flags. * We adjusted the OSEMs in/out to midrange. * The suspension is now ready for OSEM-OSEM TFs! |
=== Type B (Mark) === ==== 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. ==== Plan for coming weeks ==== For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]]. 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. |
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 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.
Plan for coming weeks
For more detail, see KAGRA/Subgroups/VIS/TypeB/ToDo.
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.