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==== Report for week of 1/29 ==== * Mark made two sets of in-air pico splitter cables (each with a triple for IM and a double for BF) for SR2 and SR3. * Fabian, Hirata-san and Kozu-kun worked on cabling and testing the IM pitch/roll/yaw picos, the BF FR and the BF LVDT. The LVDT connections were initially unreliable and Hirata-san had to redo the pins on the coil wires. * Fabian installed ballast masses in the BF. * Mark worked on schedule. * Mark did inventory of the stepper motor drivers (many were not accounted for on the wiki and/or JGWDoc and one is missing) and reserved two for SR3. * We emptied out the external cleanroom in preparation for installing SS sheet. |
==== Report for week of 6/11 ==== * Enzo redid the SR3 BIO connections to match the now-working BS setup. He also fixed PR2, which had a similar problem. * Enzo replaced LPCDs with HPCDs in the SR3. * Hirata-san installed the cable clamps and Cu segments on the SF cap. * Hirata-san and Kozu-kun continued tuning the filter in PI #3. Unfortunately it seems to be rather weaker than expected, and we have not found a compression setting that gives a good frequency. We may have to use tricks like reducing the number of Cu segments on the SF (or using Al ones) to save weight. * Mark, Enzo and Terrence suspended the BF/... section from the SF, and got it aligned for TFs. |
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==== Plan for week of 2/13 ==== * No work Monday (建国記念の日の振替休日) * Enzo on vacation * Hirata-san at Mitaka Tue (self-evaluation interview). * Shoda-san at Mitaka. * All others at Kamioka. * - * Build IRM around IM. * Cable/test/adjust IM OSEMs. * Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw. |
==== Plan for week of 6/18 ==== * Mark Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Mon-Fri. * -- * Receive second and third sets of LBB damper rings. * Take TFs. * Cable, test SF LVDT and FR. * Add calculated ballast to SF. * Finish tuning F0 #3 for SR3. * Park F0 #1 (for SR2) in top of SR3 assembly frame. * Move F0 #3 behind SR3. * Move F0 #1 to "factory" area (in front of SRM) and start rebuild. * Install PI. * Suspend SF/... section. * Lots of cabling. |
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==== Plan for week of 2/19 ==== * Enzo back from Tuesday. * Shoda-san at Mitaka. * Hirata-san at Mitaka Mon+Tue (to receive and wash parts). * All others at Kamioka. * - * Lift BF/... section and check total mass and balance. * Cable and test BF picos. * Add section of SS up to SF ring. * Bring in SF. * Hook BF/... section. * Route cables up to under SF. * Check/adjust total mass of BF/... section. |
==== Plan for week of 6/25 ==== * Mark Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Mon-Fri. |
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==== Plan for week of 2/26 ==== * Shoda-san at Mitaka. * - * Add Cu segments to SF cap. * Lift SF/... section and check total mass and balance. |
==== To-Do Lists, Schedule ==== * [[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 Type B Schedule (SR)]] |
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* Enzo 1/30-2/19. * Fabian 4/2-4/27 vacation (then gone). |
* Enzo: 9/14 JPS, 9/15 through 10/18 vacation in Chile * Terrence: 8/24-26 f2f, then returns to Hong Kong. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for week of 6/11
- Enzo redid the SR3 BIO connections to match the now-working BS setup. He also fixed PR2, which had a similar problem.
- Enzo replaced LPCDs with HPCDs in the SR3.
- Hirata-san installed the cable clamps and Cu segments on the SF cap.
- Hirata-san and Kozu-kun continued tuning the filter in PI #3. Unfortunately it seems to be rather weaker than expected, and we have not found a compression setting that gives a good frequency. We may have to use tricks like reducing the number of Cu segments on the SF (or using Al ones) to save weight.
- Mark, Enzo and Terrence suspended the BF/... section from the SF, and got it aligned for TFs.
Plan for week of 6/18
- Mark Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Mon-Fri.
- --
- Receive second and third sets of LBB damper rings.
- Take TFs.
- Cable, test SF LVDT and FR.
- Add calculated ballast to SF.
- Finish tuning F0 #3 for SR3.
- Park F0 #1 (for SR2) in top of SR3 assembly frame.
- Move F0 #3 behind SR3.
- Move F0 #1 to "factory" area (in front of SRM) and start rebuild.
- Install PI.
- Suspend SF/... section.
- Lots of cabling.
Plan for week of 6/25
- Mark Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Mon-Fri.
To-Do Lists, Schedule
Vacation Info
- Enzo: 9/14 JPS, 9/15 through 10/18 vacation in Chile
- Terrence: 8/24-26 f2f, then returns to Hong Kong.