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| ==== 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. |
==== Report for week of 11/12 ==== * BS * Kozu-kun noticed the BS OL was out of range, and Fabian and Fujii-kun investigated. It turns out that the temperature has risen by over 2°C, so all the GAS filters have sagged and several stages are touching. Miyoki-san and Furuta-san are looking at what can be done. * SRM * We did the vertical height survey and found that as with SR2 and SR3, the chain is longer than the CAD, this time by ≈7 mm, and again mostly between the SF and BF. * The final SRM small glass mirror became available, so we had Hirose-san ship it to us so we can install it while the suspension is still on the assembly frame. Hirata-san ordered shims to make up the new recommended thickness of 1.4 mm and a micrometer to check the combination, which should arrive on Monday 11/26. * SR2 * |
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| * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779-v1 Type B Schedule (SR)]] | * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779 Type B Schedule (SR)]] |
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| ==== Vacation Info ==== | ==== Plan for week of 11/19 ==== * Friday 11/23 is Labor Thanksgiving Day. * Mark, Enzo and Fabian at Kamioka Mon-Thu. * Hirata-san at Kamioka Tue-Thu (Mitaka on Mon for Engineering Promotion Office meeting). ===== SRM ===== * Go/no-go test of all electronics items, especially SF/... section. * Finish vertical height check and adjust SF trim mass as required. * Unlock IP and center roughly. * Check/adjust alignment of SS. * Calibrate IP LVDTs. * Add arc weights and geophones. * Improve centering/tuning of IP and SS alignment. * Disconnect cables at feedthroughs, lock suspension. * Crane into tank. ===== SR2 ===== * Assist MIF team with pico cables and LBB breadboard ballast. * Install SR2 OL pillar and shelf (with AOL supervision)? ==== Plan for week of 11/26 ==== * Move SRM in-air cables over to tank. * Remove First Contact. * Unlock and align SRM. * Hook and roughly ballast LBB. ==== Plan for week of 12/3 ==== * f2f Meeting at NAOJ - no Kamioka work. ==== Vacation/Event Info ==== * Hirata-san at Mitaka, Mon 11/19 (Engineering Promotion Office meeting). |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for week of 11/12
- BS
- Kozu-kun noticed the BS OL was out of range, and Fabian and Fujii-kun investigated. It turns out that the temperature has risen by over 2°C, so all the GAS filters have sagged and several stages are touching. Miyoki-san and Furuta-san are looking at what can be done.
- SRM
- We did the vertical height survey and found that as with SR2 and SR3, the chain is longer than the CAD, this time by ≈7 mm, and again mostly between the SF and BF.
- The final SRM small glass mirror became available, so we had Hirose-san ship it to us so we can install it while the suspension is still on the assembly frame. Hirata-san ordered shims to make up the new recommended thickness of 1.4 mm and a micrometer to check the combination, which should arrive on Monday 11/26.
- SR2
To-Do Lists, Schedule
Plan for week of 11/19
- Friday 11/23 is Labor Thanksgiving Day.
- Mark, Enzo and Fabian at Kamioka Mon-Thu.
- Hirata-san at Kamioka Tue-Thu (Mitaka on Mon for Engineering Promotion Office meeting).
SRM
- Go/no-go test of all electronics items, especially SF/... section.
- Finish vertical height check and adjust SF trim mass as required.
- Unlock IP and center roughly.
- Check/adjust alignment of SS.
- Calibrate IP LVDTs.
- Add arc weights and geophones.
- Improve centering/tuning of IP and SS alignment.
- Disconnect cables at feedthroughs, lock suspension.
- Crane into tank.
SR2
- Assist MIF team with pico cables and LBB breadboard ballast.
- Install SR2 OL pillar and shelf (with AOL supervision)?
Plan for week of 11/26
- Move SRM in-air cables over to tank.
- Remove First Contact.
- Unlock and align SRM.
- Hook and roughly ballast LBB.
Plan for week of 12/3
- f2f Meeting at NAOJ - no Kamioka work.
Vacation/Event Info
- Hirata-san at Mitaka, Mon 11/19 (Engineering Promotion Office meeting).