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| ==== Report for week of 3/5 ==== * Mark finished -v2 of the schedule ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779| L1807779]]). * We removed the non-vacuum-compatible ballast mass from the BS tank. * We secured all the PR2 feedthrough connections with screws. * We grabbed an extra empty rack for SRM and set it up next to the one for SR3 (we will add boxes next week). * We calibrated the SR2 SF LVDT sensing and actuation, and the FR. * We measured the bounce frequencies of the SF with and without the cap, and the bounce frequency of the BF. * We put the SF cap on and lifted and weighed the SF/... section. * However we were unhappy with how the cap had to be forced on and off and how it lowered the load capacity (≈-433 g) and resonance frequency (0.271 Hz-> 0.23 Hz). * We tried the cap left over from B2-3 used in one of the PRs, which was slightly better but still not great. * We measured diameter of the original cap (B2-2) and the new one (B2-3). The original cap was almost exactly 700 mm in internal diameter, and the new one was about 0.2 mm wider. * We moved the filter building bench and tools into the SRM area and started the rebuild of the two remaining BFs (the one from the BS Test Hang and the one with the tilted keystone). * Mark worked on slides for the ASJ and LVC meetings. * The SRM mushroom work was postponed due to other demands on the time of Sawada-san-tachi and Mirapro. |
==== Report for week of 4/9 ==== * Mark glued prisms and magnet/standoff assemblies on the SR3. The SR3 needed to be raised in the box by 0.7 mm to make the prisms go on at the right height, which was done using M4 washers under the PEEK feet. * Mark glued ferromagnetic disks on the last 5 IM flags. This completes 2 sets, for SR3 and SRM. * Mark configured two pico motor drivers ordered by Takahashi-san as SR3-IM and SRM-BF. * Enzo and Kozu-kun finished preparing and calibrating the SF and BF for SR3 and almost entirely finished with those for SRM. * Hirata-san worked on building two IMs for SR3 and SRM. The SR3 one just needs to have flags attached and to be weighed; the SRM needs another few hours work. * Shoda-san worked on the design of the metal SRM, on the LBB ballast mass, and on the plans for testing the BS in bKAGRA Phase 1. |
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| ==== Plan for week of 3/12 ==== * Shoda-san at Mitaka. * Mark at ASJ (Chiba) Fri, then Mitaka. * Others Kamioka Mon-Thu * F2F VIS Meeting and Farewell Party for Fabian at Mitaka on Friday. |
==== Plan for week of 4/16 ==== * Shoda-san, Fujii-kun at Mitaka * Tanioka-san at Kamioka Tue-Thu * Others at Kamioka full week |
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| * Install boxes in SR3 and SRM racks. * Lay SR3 in-air cabling. * Continue rebuild of BFs. * Ship dummy BS to Mitaka. |
* Move SF and BF for SRM out of the way. * Check results of gluing. * Build 1xRM * Calibrate OSEMs. * Start SR3 Hang * Reset assembly frame crossbars to correct heights. * Center the optical table. * Align the assembly frame vertically. * Install IM ring and IM. * Hang optic. * Hang RM. * Cable RM OSEMs. |
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| ==== Plan for week of 3/19 ==== * Fujii-kun and Tanioka-kun join. * Mark at LVC meeting * Fujii-kun at Kamioka * All others at Mitaka |
==== Plan for week of 4/23 ==== * Shoda-san, Tanioka-san at Mitaka * Hirata-san at Mitaka * Mark, Enzo, Fujii-kun, Kozu-kun at Kamioka |
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| * Put four geophones in pods. * Make two sets of IM OSEMs * Make last in-air pico adapter cable * Make three in-air stepper splitter cables for SR2, SR3 and SRM. * Set up Dummy BS prism removal. |
* Clean parts (cable clamp bases, etc, etc). * Observe KAGRA Phase 1 operations, assist if problems arise. * Continue SR3 hang. |
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==== Plan for week of 3/26 ==== * Mark vacation. * Shoda-san at Mitaka * Others at Kamioka * -- * SF Check * Check load capacity. * Check fit of caps. * Add cable clamps to bases. * Add cable clamps and Cu segments to caps (only if they fit well). * Cable LVDTs and steppers. |
==== Plan for week of 4/30 ==== * Golden Week! |
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| * Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun) * Hirata-san vacation, Mon 3/5. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for week of 4/9
- Mark glued prisms and magnet/standoff assemblies on the SR3. The SR3 needed to be raised in the box by 0.7 mm to make the prisms go on at the right height, which was done using M4 washers under the PEEK feet.
- Mark glued ferromagnetic disks on the last 5 IM flags. This completes 2 sets, for SR3 and SRM.
- Mark configured two pico motor drivers ordered by Takahashi-san as SR3-IM and SRM-BF.
- Enzo and Kozu-kun finished preparing and calibrating the SF and BF for SR3 and almost entirely finished with those for SRM.
- Hirata-san worked on building two IMs for SR3 and SRM. The SR3 one just needs to have flags attached and to be weighed; the SRM needs another few hours work.
- Shoda-san worked on the design of the metal SRM, on the LBB ballast mass, and on the plans for testing the BS in bKAGRA Phase 1.
Plan for week of 4/16
- Shoda-san, Fujii-kun at Mitaka
- Tanioka-san at Kamioka Tue-Thu
- Others at Kamioka full week
- --
- Move SF and BF for SRM out of the way.
- Check results of gluing.
- Build 1xRM
- Calibrate OSEMs.
- Start SR3 Hang
- Reset assembly frame crossbars to correct heights.
- Center the optical table.
- Align the assembly frame vertically.
- Install IM ring and IM.
- Hang optic.
- Hang RM.
- Cable RM OSEMs.
Plan for week of 4/23
- Shoda-san, Tanioka-san at Mitaka
- Hirata-san at Mitaka
- Mark, Enzo, Fujii-kun, Kozu-kun at Kamioka
- --
- Clean parts (cable clamp bases, etc, etc).
- Observe KAGRA Phase 1 operations, assist if problems arise.
- Continue SR3 hang.
Plan for week of 4/30
- Golden Week!
To-Do Lists, Schedule
Vacation Info
- Fabian vacation, 3/26-4/27 (then gone).