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| * Type B Past Week Summary * Mark and Fabian worked at Kamioka with Fujii-san: * We attempted to measure the tilt sensitivity of the accelerometers by adding shims under the legs but gave up when we discovered that picking up and putting down the accelerometer perturbs the zero point even without shims. We will probably need a special tilt stage to do this properly. * We took some frequency and Q measurements. The results were amplitude dependent. Joris thinks that this is due to not operating the accelerometers close enough to zero DC output. * We set up for a test of the geophone noise. One geophone is reading half the output of the others - one of the adapter cables is broken. * Hirata-san: * Received extra compensation masses and washed them. * Received PI guides, assembled them and shipped them to Kamioka. * Received backup set of pillar for security structure (with M10 instead of M12 holes at top). * Removed adhesive from base of BS flags in preparation for regluing. * Did assembly drawings for cable clamps and other add-on parts for BF and SF. * Type B ongoing issues * Wires * Need to decide RM wire thickness and order BS and RM wires. Lead time is a few days from Nilaco. * OSEMs * Akutsu-san is working to get wide-mouth OSEMs * Longer cables for BF->PI and SF->PI. * Connectors RECEIVED, cables being made. * Feedthrough Adapters * Connectors RECEIVED. * SR machining test ONGOING. * Installation stuff * "Ceiling" work in BS clean booth (removal of second floor section) scheduled for Fri 7/1. * Assembly frame construction scheduled for 7/4 * Ballast masses for payload * Initial batch received - ordered extra smaller ones to allow for adjustments. * Lower breadboard stuff * Installation to be incorporated into the procedure document. Mark/Takahashi to discuss. * Breadboard springs (in manufacture, expected end of July) * Nail-head parts - ordered with assembly frame, will arrive next week. * Documents * BS Assembly Procedure [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235| E1504235]], [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|E1504235 draft]] |
=== 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 ==== * [[KAGRA/Subgroups/VIS/TypeB/March2018]] * [[KAGRA/Subgroups/VIS/TypeB/April2018]] * [[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 ==== * Fabian vacation, 3/26-4/27 (then gone). |
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).