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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. |
==== Report for week of 1/15 ==== * We swapped in the other available BF, and it was rather better: only 0.3 mm of keystone tilt rather than 1.3 mm. We will use it for the SR2 and then think about whether we want to use or rebuild the original one. * We finished the preparation of the second BF, setting the yoke, adding the new-style cable clamps etc. * We changed the 1.6 mm sockets on the BF LVDT cable to 1.0 mm ones to match the pins on the LVDT wires. The specification of the cable in D1503901 was apparently wrong. We will update it (today) before doing the cable order for the SR3 and SRM. * We received, unpacked and temporarily stored a shipment of weights and other parts that will be used to check the load capacity of the top filters. * We updated the BS real-time model and screens, adding support for a damping filter common to both the OL-TM and OL-IM paths, per Izumi-san's suggestion in G1807653. * We set up the router for the SR2 rack and got the SR2_IM pico driver and both stepper motors on the network (the SR2_BF pico is still on order). |
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| ==== Plan for coming weeks ==== For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]]. |
==== Plan for week of 1/29 ==== * Enzo at Mitaka 1/29 and most of 1/30, then vacation. * Kozu-kun away. * All others at Kamioka. * Make in-air pico adapter cables. * Test IM picos and BF yaw pico. * Calibrate LVDT. * Get screws for ballast mass from Takahashi-san. * Install ballast mass in BF. * Set up for F0 test. |
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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 2/5 ==== * Enzo on vacation; all others at Kamioka. * Build IRM around IM. * Cable/test/adjust IM OSEMs. * Time permitting, do TFs from IM OSEMs to themselves and to optical sensor. ==== Vacation Info ==== * Enzo 1/30-2/19 (at Mitaka 1/29, part of 1/30) * Kozu-kun 1/29-2/2 |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for week of 1/15
- We swapped in the other available BF, and it was rather better: only 0.3 mm of keystone tilt rather than 1.3 mm. We will use it for the SR2 and then think about whether we want to use or rebuild the original one.
- We finished the preparation of the second BF, setting the yoke, adding the new-style cable clamps etc.
- We changed the 1.6 mm sockets on the BF LVDT cable to 1.0 mm ones to match the pins on the LVDT wires. The specification of the cable in D1503901 was apparently wrong. We will update it (today) before doing the cable order for the SR3 and SRM.
- We received, unpacked and temporarily stored a shipment of weights and other parts that will be used to check the load capacity of the top filters.
- We updated the BS real-time model and screens, adding support for a damping filter common to both the OL-TM and OL-IM paths, per Izumi-san's suggestion in G1807653.
- We set up the router for the SR2 rack and got the SR2_IM pico driver and both stepper motors on the network (the SR2_BF pico is still on order).
Plan for week of 1/29
- Enzo at Mitaka 1/29 and most of 1/30, then vacation.
- Kozu-kun away.
- All others at Kamioka.
- Make in-air pico adapter cables.
- Test IM picos and BF yaw pico.
- Calibrate LVDT.
- Get screws for ballast mass from Takahashi-san.
- Install ballast mass in BF.
- Set up for F0 test.
Plan for week of 2/5
- Enzo on vacation; all others at Kamioka.
- Build IRM around IM.
- Cable/test/adjust IM OSEMs.
- Time permitting, do TFs from IM OSEMs to themselves and to optical sensor.
Vacation Info
- Enzo 1/30-2/19 (at Mitaka 1/29, part of 1/30)
- Kozu-kun 1/29-2/2