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| * Activity report for week of 12/19 * Mark and Fabian checked Hirata-san's drawings and parts/fastener lists for the SRM/PRM order and various other drawings. [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5964| D1605964]], [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5965| D1605965]], [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5956| D1605956]], [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5963| D1605963]], [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5977|D1605977]], etc. * Fabian designed a simple two-piece hold-down device to immobilize the SRx IMs during the optic and RM hanging. It avoids having to remachine all the IM support bars to allow for hold-down screws. The Type Bp team might also want to use it. * Aso-san and Mark discussed the [[KAGRA/Subgroups/VIS/VISMinutes20161216#BFIssue|BF issue]] from last week. * It was decided to ask Takahashi-san to take a look at the BF while he's at Kamioka this week. * It was decided to have the BS bottom filter moved to Mitaka for tuneup and adjustment as soon as possible in the new year. * Raffaele, Aso-san, Mark and Fabian discussed having much smaller/shorter BS and SR stub flags plus longer, coil-only OSEMs. * Aso-san volunteered to do the OSEM design. * Hirata-san made Pack'n'Go archives of the existing designs as a baseline for Aso-san. * Hirata-san searched for missing PR mirror box parts. * Miyakawa-san finished recabling the PR2 rack and got the real-time model running again. The model still needs lots of work, but it has the OSEM functionality needed for the next test-hang stage, plus Okutomi-san's improvements. |
=== Type B (Mark) === ==== Past two weeks report ==== At Kamioka (Mark, Enzo, Kozu-kun): * Supported IA team. * Replaced LPCDs for IM OSEMs with HPCDs for increased pitch/yaw range. * Re-zeroed OL after significant change of beam position during IA. * Re-laid-out OL to improve focus of lens to LEN QPD. * Offloaded the pitch/yaw actuation at the IM OSEMs using the IM pitch/yaw picos. * Enzo worked on design of control loops using the OL. * Kozu-kun worked on diagonalizing the OL. Mitaka (Fabian, Hirata-san): * Hirata-san published his inventory of SR parts on Dropbox. ==== Plan for week of 11/13 ==== Kamioka: Mark * Attend commissioning workshop at U Toyama. * Be person-on-site for BF work. * Set up for mirror gluing. Mitaka: Fabian and Hirata-san * SR procurement. * New PI GAS FR design. * BS LBB ballast mass design. * SR cable lamp design. Mitaka: Enzo and Kozu-kun (Wed, Thu) * Servos * TFs of BF * Documentation |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past two weeks report
At Kamioka (Mark, Enzo, Kozu-kun):
- Supported IA team.
- Replaced LPCDs for IM OSEMs with HPCDs for increased pitch/yaw range.
- Re-zeroed OL after significant change of beam position during IA.
- Re-laid-out OL to improve focus of lens to LEN QPD.
- Offloaded the pitch/yaw actuation at the IM OSEMs using the IM pitch/yaw picos.
- Enzo worked on design of control loops using the OL.
- Kozu-kun worked on diagonalizing the OL.
Mitaka (Fabian, Hirata-san):
- Hirata-san published his inventory of SR parts on Dropbox.
Plan for week of 11/13
Kamioka: Mark
- Attend commissioning workshop at U Toyama.
- Be person-on-site for BF work.
- Set up for mirror gluing.
Mitaka: Fabian and Hirata-san
- SR procurement.
- New PI GAS FR design.
- BS LBB ballast mass design.
- SR cable lamp design.
Mitaka: Enzo and Kozu-kun (Wed, Thu)
- Servos
- TFs of BF
- Documentation