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* Mark, Fabian and Enzo continued BS Test Hang work: * We installed the BF fishing rod stepper motor adaptor cable. * We tried to install the BF LVDT cable but first we encountered trouble routing it, and then several wires broke at the D-Sub end. * We laid 6 in-air cables from the tank to the PR2 rank for BF and SF picos, steppers and LVDTs. * We lifted the BF/IRM/IM/RM/BS section to weigh it and check its balance. * It was 195.6 kg, which is 18 kg(!) less than the capacity of the SF. * There was a major imbalance in roll: with all four built-in trim masses moved up the +Y end, it still needed 270 g of extra trim mass to be level. * Unfortunately when we put the payload, the IM was slightly yawed and ended up on the horizontal EQ stop screws. This let the IM-BF maraging rod go slack, which disturbed the leveling of the IM (because every time it is picked up the maraging rod settles in a different place, giving a different suspension point). We may have to partly disassemble the IRM and rearrange the time mass on the the IM. * We shipped BS mirror box parts to Shoda-san and components for a new LVDT cable to Hirata-san. * We posed for pictures of the BS by a team from National Geographic. * Hirata-san * Did parts and fastener lists for the SR payload. * Did a 3D model with the SR suspension on the BS assembly frame (to help Mark make adjustments to the frame design). * Did 2D drawings of Fabian's concept for BS EQ stop parts. * Did a 3D model of a wire clamp with replaceable jaw parts (to avoid having to reuse parts with scars from pressure). * Did 2D drawings of a new wire clamps for on top of the BS and SR RMs. |
=== Type B (Mark) === ==== Report for week of 3/26 ==== BFs: * BF No. 1: * Fujii-san finished tuning. * Enzo wired the LVDT, Picomotor and StepperMotor. * We measured the keystone tilt at 4 different points and it was at 65.5, 65.5, 65.5 and 65.5. So with the differences of 0.1 mm we think we can tolarate this differences. * We added cable clamps to the base. * BF No.7: * Fujii-san disassemble the blades corresponding to the BS and we assemble the SR type blades. SFs: * Hirata-san and Tanioka-san set up the frame to check the SFs. * SF (B2-5): * Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap. The optimal load changes about 200[g]. * We measured the keystone tilt at x points: 65.5mm, 65.5mm, 65.5mm, and 65.5mm. * SF (B2-6): * Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap (On going?). * We measured the keystone tilt at x points: 65.5mm, 65.5mm, 65.5mm, and 65.5mm. SR3/SRM: * Kozu-kun and Enzo finished the SR3 in-air cabling. * Enzo prepared the SR3 and SRM rack in parallel (On going). BS: * Kozu-kun and Enzo helped Enomoto-san troubleshooting the BS Oplev issue (On going). * We finished tuning of BF No. 1. * We wired the LVDT, Picomotor and StepperMotor of BF No. 1. * We finished tuning of BF No. 7. * We wired the LVDT, Picomotor and StepperMotor of BF No. 7. * SF check (Hirata-san++). * We checked the load capacity with and without the cap. * We checked fit of caps. For the SF No. * Add cable clamps to bases. * Add cable clamps and Cu segments to caps (only if they fit well). * Cable LVDTs and steppers. * We finished the SR3 in-air cabling. ==== Plan for week of 4/2 ==== * Mark at Mitaka Mon, Kamioka from Tue. * Shoda-san at Mitaka * Others at Kamioka * -- * Glue SR3 (if available) * Build 2xIM, 2xIRM (if parts available - due 3/30) ==== Plan for week of 4/9 ==== * Shoda-san at Mitaka * Others at Kamioka * -- * Finish IMs and IRMs * Build 1xRM ==== Plan for week of 4/16 ==== * Start SR3 Hang? ==== Plan for week of 4/23 ==== * F0 blade prototype test ==== Plan for week of 4/30 ==== * Golden Week! ==== To-Do Lists, Schedule ==== * [[KAGRA/Subgroups/VIS/TypeB/March2018]] * [[KAGRA/Subgroups/VIS/TypeB/April2018]] * [[KAGRA/Subgroups/VIS/TypeB/ToDoBS]] * [[KAGRA/Subgroups/VIS/TypeB/ToDoSR]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779-v1 Type B Schedule (SR)]] ==== Vacation Info ==== * Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun) * Fabian vacation, 3/26-4/27 (then gone). |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for week of 3/26
BFs:
- BF No. 1:
- Fujii-san finished tuning.
Enzo wired the LVDT, Picomotor and StepperMotor.
- We measured the keystone tilt at 4 different points and it was at 65.5, 65.5, 65.5 and 65.5.
- So with the differences of 0.1 mm we think we can tolarate this differences.
- We added cable clamps to the base.
- BF No.7:
- Fujii-san disassemble the blades corresponding to the BS and we assemble the SR type blades.
SFs:
- Hirata-san and Tanioka-san set up the frame to check the SFs.
- SF (B2-5):
- Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap. The optimal load changes about 200[g].
- We measured the keystone tilt at x points: 65.5mm, 65.5mm, 65.5mm, and 65.5mm.
- SF (B2-6):
- Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap (On going?).
- We measured the keystone tilt at x points: 65.5mm, 65.5mm, 65.5mm, and 65.5mm.
SR3/SRM:
- Kozu-kun and Enzo finished the SR3 in-air cabling.
- Enzo prepared the SR3 and SRM rack in parallel (On going).
BS:
- Kozu-kun and Enzo helped Enomoto-san troubleshooting the BS Oplev issue (On going).
- We finished tuning of BF No. 1.
We wired the LVDT, Picomotor and StepperMotor of BF No. 1.
- We finished tuning of BF No. 7.
We wired the LVDT, Picomotor and StepperMotor of BF No. 7.
- SF check (Hirata-san++).
- We checked the load capacity with and without the cap.
- We checked fit of caps. For the SF No.
- Add cable clamps to bases.
- Add cable clamps and Cu segments to caps (only if they fit well).
- Cable LVDTs and steppers.
- We finished the SR3 in-air cabling.
Plan for week of 4/2
- Mark at Mitaka Mon, Kamioka from Tue.
- Shoda-san at Mitaka
- Others at Kamioka
- --
- Glue SR3 (if available)
- Build 2xIM, 2xIRM (if parts available - due 3/30)
Plan for week of 4/9
- Shoda-san at Mitaka
- Others at Kamioka
- --
- Finish IMs and IRMs
- Build 1xRM
Plan for week of 4/16
- Start SR3 Hang?
Plan for week of 4/23
- F0 blade prototype test
Plan for week of 4/30
- Golden Week!
To-Do Lists, Schedule
Vacation Info
- Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun)
- Fabian vacation, 3/26-4/27 (then gone).