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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. |
* Hirata-san: * Made cables for LVDT. * Made drawings for new wire clamps. * Asked ATC for manufacturing parts.(and modified drawings.) * Asked quotes for SDC coating for hooks. * Sent packing tools for BF. * Talked with i-ject about quotes for payload. * Mark and Fabian at Kamioka (plus Enzo for 2 days): * Finished rebalance of IM * Reinstalled IRM, adjusted OSEMs * Replaced broken Type 3 cable on IM-H1 OSEM. * Fixed issues with k1visbs real-time model. * Started TFs from IRM OSEMs to IRM and IM OSEMs. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
- Hirata-san:
- Made cables for LVDT.
- Made drawings for new wire clamps.
- Asked ATC for manufacturing parts.(and modified drawings.)
- Asked quotes for SDC coating for hooks.
- Sent packing tools for BF.
- Talked with i-ject about quotes for payload.
- Mark and Fabian at Kamioka (plus Enzo for 2 days):
- Finished rebalance of IM
- Reinstalled IRM, adjusted OSEMs
- Replaced broken Type 3 cable on IM-H1 OSEM.
- Fixed issues with k1visbs real-time model.
- Started TFs from IRM OSEMs to IRM and IM OSEMs.