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| Deletions are marked like this. | Additions are marked like this. |
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| At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san): | |
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| * Realized that the SF/BF/... section doesn't need 6 kg added, it needs 6 kg ''removed'', but none to remove. The 20 kg extra in the BF to match the SF GAS filter makes the whole chain overload the PI GAS filter. * Lifted the SF/BF/... section to check for net weight and balance. Was 307 kg (cf. G&M's measurement of 301 kf in 2012 for the F0). Can be balanced with only 63 g extra. * Went to build up the LBB blade units but discovered that the holes in the base of the blades are two small (are Ø11 mm; should be Ø12 MM). 3D CAD was correct - error was in the 2D drawing. Shipped the blades away for modification. * Tested the SF LVDT actuation and worked on debugging it. Still not working. * Prepared the PI for being lifted, and the top of the assembly frame for receiving it. * Searched for and found the old PI-SF rod. * Did safety improvements after Enzo hit his head on a flange bolt: reversed all the bolts on the ±X sides of the BS and put caution tape on them. * Debugged Kokeyama-san's changes to the real-time model for the DIO, and started on TFs to check the output filter compensation is working. |
* Mark worked on SR2 planning. * Mark thought through what would be required to swap an optic (e.g., SRM) in situ (JGW-T1707436). * Hirata-san tried removing disks from IM flags (so we could reuse them in flag bases and make a complete set for SR2) but only got 1 of 4 out. * Hirata-san ordered more disks for IM flags. * Hirata-san asked for quotes on SF LBB blades. * Hirata-san got a reduced quote for the LBB damper rings. * Hirata-san received and cleaned suspension wires for the SR. * Fabian worked on the SR mass budget. * Fabian worked out the COM of the SR2 optic, and Mark used it to derive the proper prism positions. * Enzo and Kozu-kun worked on control filter design and installation. |
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| ==== Plan for coming weeks ==== For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]]. |
==== Plan for week of 11/27 ==== * Fabian at commissioning workshop * Hirata-san at Kamioka Tue-Fri to work with Mirapro on SRM LBB installation. * All others (Mark, Enzo, Shoda-san, Kozu-kun) at Kamioka to start SR2 assembly. * Mark from Mon lunchtime. * Kozu-kun from Mon lunchtime through Wed. * Mirror gluing. * SR2 rack setup. |
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| Week of 4/24 (four-day week): * Crane in PI. * Connect SF/BF... section and see if we're indeed overweight and by exactly how much. * Finish debugging SF LVDT actuation. |
==== Plan for week of 12/4 ==== * All at Kamioka * IM assembly and pico test. * Assembly frame alignment and optical table centering. * OL setup. |
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| Week of 5/1: * No activity (Golden Week). |
==== Vacation Info ==== * Mark 12/22-1/3 * Enzo TBD, probably 12/22-1/3 * Fabian 12/22-1/5 * Hirata-san 12/21-22 (conference) |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past week report
- Mark worked on SR2 planning.
- Mark thought through what would be required to swap an optic (e.g., SRM) in situ (JGW-T1707436).
- Hirata-san tried removing disks from IM flags (so we could reuse them in flag bases and make a complete set for SR2) but only got 1 of 4 out.
- Hirata-san ordered more disks for IM flags.
- Hirata-san asked for quotes on SF LBB blades.
- Hirata-san got a reduced quote for the LBB damper rings.
- Hirata-san received and cleaned suspension wires for the SR.
- Fabian worked on the SR mass budget.
- Fabian worked out the COM of the SR2 optic, and Mark used it to derive the proper prism positions.
- Enzo and Kozu-kun worked on control filter design and installation.
Plan for week of 11/27
- Fabian at commissioning workshop
- Hirata-san at Kamioka Tue-Fri to work with Mirapro on SRM LBB installation.
- All others (Mark, Enzo, Shoda-san, Kozu-kun) at Kamioka to start SR2 assembly.
- Mark from Mon lunchtime.
- Kozu-kun from Mon lunchtime through Wed.
- Mirror gluing.
- SR2 rack setup.
Plan for week of 12/4
- All at Kamioka
- IM assembly and pico test.
- Assembly frame alignment and optical table centering.
- OL setup.
Vacation Info
- Mark 12/22-1/3
- Enzo TBD, probably 12/22-1/3
- Fabian 12/22-1/5
- Hirata-san 12/21-22 (conference)