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| ==== Report for week of 4/23 ==== * We hung the optic and set its pitch. The winch system had a lot of slop in it but the technique of relaxing the wires by lifting the optic on the EQ stops was effective in getting consistent results. * We tightened the clamps using a torque wrench, using settings of 5 N.m for the primary clamps and 20 N.m for the secondary. * We hung the RM and set its pitch. The RM winches were a lot more consistent. * However when tightening the clamps, the wire on the +Y side broke at the bottom edge of primary clamp. The wire on the -Y held, so the RM dropped a few mm onto the trolley on the +Y side. * We raised the RM trolley to support the RM and left the optic hanging inside it overnight as a safety test. * We then reversed the usual installation procedure to remove the RM and get the mirror box around the optic. We used clamp pieces as spacers to bridge the gaps created by the fact that the optic had been raised 3 mm during hanging and could not safely be lowered. We then cut the wires, leaving the op ==== Plan for week of 4/30 ==== * Shoda-san at Mitaka. * Mark, Enzo at Kamioka Mon-Wed or TBD. * Others having fun doing Golden Week stuff. * -- * Observe KAGRA Phase 1 operations, assist if problems arise. * Do BF TFs. * Continue SR3 hang. ==== Plan for week of 5/7 ==== * Shoda-san at Mitaka. * Hirata-san at Kamioka Mon-Wed, then Mitaka. * Kozu-kun at Kamioka Wed-Fri (but may be working with PEM on Fri). * Others (Mark, Enzo, Tanioka-kun) at Kamioka full week * -- * Continue SR3 Hang * Inspect clamps and decide whether to reuse or swap in clamps from SRM IM. * Rehang optic. * Rehang RM. * Cable RM OSEMs. * Prepare for filter testing * Remove cracked blades from F0 #1 and #3. * Remove floor panel in SR3 area. * Set up filter building trolley with crossbars, jacks and F0 test masses. |
==== Report for week of 10/29 ==== * SRM * Hirata-san and Mark craned the LBB ring sandwich to the ceiling of the lower half of the tank, and set the heights of the jacks on the upper half. * Fabian and Hirata-san finished the in-vacuum cabling. * Enzo ran DC power to the second SRM stepper driver and did the rest of the in-air cabling. * We're now ready for final tests of the SF/... items and initial tests of the PI items. * Enzo and Fujii-kun built three geophones for SRM. * Mark worked on the height budget. * SR2 * Enzo experimented with [[http://www2.mpq.mpg.de/~ros/geo600_docu/soft/liso/manual.pdf|LISO]] (circuit analysis software which, among other functions, can fit measured TFs with a ZPK model) but then wrote his own fitting software in Python and used it to build Foton models of key TFs of the SR2. (These are in slots FM6-FM8 of the DAMP blocks and should not be accidentally enabled.) |
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| * Etc * Test prototype SR3 safety bar, and set up second safety bar. * Negotiate with Mirapro to get SRM mushroom installed, avoiding 5/15. |
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| * [[KAGRA/Subgroups/VIS/TypeB/March2018]] * [[KAGRA/Subgroups/VIS/TypeB/April2018]] |
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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 ==== * Fabian vacation, 3/26-4/27 (then gone). |
==== Plan for week of 11/11 ==== * Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri. ===== SRM ===== * Main sequence ==== 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 10/29
- SRM
- Hirata-san and Mark craned the LBB ring sandwich to the ceiling of the lower half of the tank, and set the heights of the jacks on the upper half.
- Fabian and Hirata-san finished the in-vacuum cabling.
- Enzo ran DC power to the second SRM stepper driver and did the rest of the in-air cabling.
- We're now ready for final tests of the SF/... items and initial tests of the PI items.
- Enzo and Fujii-kun built three geophones for SRM.
- Mark worked on the height budget.
- SR2
Enzo experimented with LISO (circuit analysis software which, among other functions, can fit measured TFs with a ZPK model) but then wrote his own fitting software in Python and used it to build Foton models of key TFs of the SR2. (These are in slots FM6-FM8 of the DAMP blocks and should not be accidentally enabled.)
To-Do Lists, Schedule
Plan for week of 11/11
- Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri.
SRM
- Main sequence
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).