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Size: 1797
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Size: 2355
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| Deletions are marked like this. | Additions are marked like this. |
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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 5/28 ==== * Enzo and Mark debugged the BS BIO connections and finally got it working. There were a total of four issues identified: * A wrong block used in the BS real-time model. * The real-time model deciding to treat the cards as numbered backwards from the slot order or the jumper settings. * Two unlabeled cables that may have been swapped. * The GAS coil driver and associated cables had been labeled HPCD #1 whereas it had been #0 in the diagram. * Hirata-san and Kozu-kun received the final F0 blades, characterized 6 of them and, with help from Takahashi-san, installed a matched set of 3 into PI #3. It appears to be 6 kg short of the load capacity that was targeted, but still with 4 kg of margin. It is close to having a good frequency but needs another round of tuning. * Mark and Terrence fixed an issue with the security structure - due to a screenshot of the CAD not updated from the BS procedure to the SR one, the BF ring had been placed 180° off in yaw. We suspended the BF from the load gauge adapter, reconfigured the BF jacks to support the ring instead of the BF, and rotated the ring. Mark corrected the procedure. ==== Plan for week of 6/11 ==== * Mark Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Tue-Fri (Mon is compensation day for f2f.) * -- * Route cables through SF-BF flying saucer up to bottom of SF. * Add minimal ballast mass to SF (rough balance only) and weigh SF/... section. * Adjust BF trim mass. * Readjust payload. * Take TFs. * Cable, test SF LVDT and FR. * Add calculated ballast to SF. * Finish tuning F0 #3 for SR3. * Park F0 #1 (for SR2) in top of SR3 assembly frame. * Move F0 #3 behind SR3. * Move F0 #1 to "factory" area (in front of SRM) and start rebuild. ==== Plan for week of 6/18 ==== * Mark Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Mon-Fri. * -- * Install PI. * Suspend SF/... section. * Lots of cabling. ==== To-Do Lists, Schedule ==== * [[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 ==== |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for week of 5/28
- Enzo and Mark debugged the BS BIO connections and finally got it working. There were a total of four issues identified:
- A wrong block used in the BS real-time model.
- The real-time model deciding to treat the cards as numbered backwards from the slot order or the jumper settings.
- Two unlabeled cables that may have been swapped.
- The GAS coil driver and associated cables had been labeled HPCD #1 whereas it had been #0 in the diagram.
- Hirata-san and Kozu-kun received the final F0 blades, characterized 6 of them and, with help from Takahashi-san, installed a matched set of 3 into PI #3. It appears to be 6 kg short of the load capacity that was targeted, but still with 4 kg of margin. It is close to having a good frequency but needs another round of tuning.
- Mark and Terrence fixed an issue with the security structure - due to a screenshot of the CAD not updated from the BS procedure to the SR one, the BF ring had been placed 180° off in yaw. We suspended the BF from the load gauge adapter, reconfigured the BF jacks to support the ring instead of the BF, and rotated the ring. Mark corrected the procedure.
Plan for week of 6/11
- Mark Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Tue-Fri (Mon is compensation day for f2f.)
- --
- Route cables through SF-BF flying saucer up to bottom of SF.
- Add minimal ballast mass to SF (rough balance only) and weigh SF/... section.
- Adjust BF trim mass.
- Readjust payload.
- Take TFs.
- Cable, test SF LVDT and FR.
- Add calculated ballast to SF.
- Finish tuning F0 #3 for SR3.
- Park F0 #1 (for SR2) in top of SR3 assembly frame.
- Move F0 #3 behind SR3.
- Move F0 #1 to "factory" area (in front of SRM) and start rebuild.
Plan for week of 6/18
- Mark Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Mon-Fri.
- --
- Install PI.
- Suspend SF/... section.
- Lots of cabling.
To-Do Lists, Schedule