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Size: 1797
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Size: 1856
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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. |
* Activity report for weeks of 12/26 and 1/2 * Hirata-san: * Modified parts list and screw list for payload. * Sent lists to i-ject and asked for preliminary quotes. * Made drawings for some jigs (PR hold-down jig) and some parts for payload (PR/SR wire clamps with disposable jaw pieces - improved version with disposable pieces in both primary and secondary clamps). * For Type Bp: * Searched for PR gluing jigs. * Washed and assembled recoilmass base for mirror hanging jigs, and sent them to Kamioka. * Washed additional masses for IM and sent them to Kamioka. * For others: * Washed IMMT plate and sent them to Kamioka. * Fabian * Designed a pull down system to fix the PR IM to the EQ stop (similar to the SR one). * Worked on design of the SR assembly frame. As hoped, the SR version can be almost identical to the BS version. * Worked on design of additional trim mass (≈18 kg) for the BS BF. * Checked assembly PR/SR drawings. There were a few corrections/changes. * Checked fastener list. There were few corrections/changes. * Checked component list for the manufacture order. There were few corrections/changes. * Helped in searching for the PR gluing jigs. * Mark * Started design of SR assembly frame (but then passed it to Fabian). * Worked on task lists and schedule. * Plan for 1/10-13 * Mark and Fabian at Kamioka: * Finish rebalance of IM * Reinstall IRM, adjust OSEMs * Replace broken Type 3 cable. * Do TFs from IRM OSEMs to IRM and IM OSEMs. * Cable up and test BF LVDT and fishing rod (time permitting). * Disconnect BF and ship back to Mitaka (time permitting). * Hirata-san: * More SR procurement. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
- Activity report for weeks of 12/26 and 1/2
- Hirata-san:
- Modified parts list and screw list for payload.
- Sent lists to i-ject and asked for preliminary quotes.
- Made drawings for some jigs (PR hold-down jig) and some parts for payload (PR/SR wire clamps with disposable jaw pieces - improved version with disposable pieces in both primary and secondary clamps).
- For Type Bp:
- Searched for PR gluing jigs.
- Washed and assembled recoilmass base for mirror hanging jigs, and sent them to Kamioka.
- Washed additional masses for IM and sent them to Kamioka.
- For others:
- Washed IMMT plate and sent them to Kamioka.
- Fabian
- Designed a pull down system to fix the PR IM to the EQ stop (similar to the SR one).
- Worked on design of the SR assembly frame. As hoped, the SR version can be almost identical to the BS version.
- Worked on design of additional trim mass (≈18 kg) for the BS BF.
- Checked assembly PR/SR drawings. There were a few corrections/changes.
- Checked fastener list. There were few corrections/changes.
- Checked component list for the manufacture order. There were few corrections/changes.
- Helped in searching for the PR gluing jigs.
- Mark
- Started design of SR assembly frame (but then passed it to Fabian).
- Worked on task lists and schedule.
- Hirata-san:
- Plan for 1/10-13
- Mark and Fabian at Kamioka:
- Finish rebalance of IM
- Reinstall IRM, adjust OSEMs
- Replace broken Type 3 cable.
- Do TFs from IRM OSEMs to IRM and IM OSEMs.
- Cable up and test BF LVDT and fishing rod (time permitting).
- Disconnect BF and ship back to Mitaka (time permitting).
- Hirata-san:
- More SR procurement.
- Mark and Fabian at Kamioka: