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| ==== Report for week of 9/10 ==== * We finish the invacuum and in air cabling for SR2, but the in-vacuum cables for Geophones and F0 Yaw stepper motor are just temporary and will be replaced later once the suspension is inside the tank. * We checked all the motors: * IM picos, BF picos. * BF Stepper (Fishing rod), SF Stepper (SF Fishing rod), F0 Stepper (F0 Fishing rod). * IP Steppers (Horizontal fishing rods). * We use the Steppers to set to nominal height the BF and SF, but for the SF we culd not move it too much and it is still too low. * We set up the temporary oplev for SR2. * We checked the pitch of the optics. The current pitch is: * We tried to check the TM actuators but there is a problem with the MEDM screens that we need to fix next week. * We measured TFs of the GAS filters and the 6 DoF of the IM. It seems to be healthy. * We set the F0 stepper to middle position. * ... |
==== Report for the week of 3/25 ==== * Mark and Fabian helped Fujii-kun with PR2. The problem turned out to be two broken flags. Hirata-san drew up a design for a jig to help reglue the flags in situ. * Fabian documented the height budget for the Type B suspension in the wiki ([[KAGRA/Subgroups/VIS/OpsManual/TypeB/SR3Data]] etc). * Terrence wrote up the final version of his OL diagonalization scheme. * Terrence worked on L2P decoupling for the TM. * Terrence and Mark edited the Type B Guardian to put turning on the payload damping later in the sequence, to help ensure that the OSEMs are not touching by the time they're needed (which can happen if the BF is buoyancy compensated for vacuum but the suspension is vented). * Mark started on a big tidy-up of the cleanbooth. ==== Plan for week of 3/25 ==== * Mark, Fabian at Kamioka Mon-Fri. * Assist with PR2. * Work on Type B paper. * Tidy up. * Throw out foil and other garbage. * Gather and clean tools. * Gather and organize unused parts and fasteners. * Return all unused cables to tent. * Tidy up cables in rear of SR2 rack. |
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| === Type B (Mark) === ==== Report for week of 9/3 ==== * We did more in-vacuum and in-air cabling for SR2 and got nearly everything connected. * We debugged the IM OSEMs and fixed two broken in-vacuum cables and some mislabeled in-air cables. * We debugged an issue with the IP LVDTs and discovered it was a broken interface card D1402829 in the LVDT driver. We made up a working chassis with the original two driver cards, so we didn't have to reset all the phases and gains. * We reset the IP FRs to midrange. * We added a basic set of arc weights and recentered the IP. We then adjusted the verticality of the security structure. * We relocked the IP temporarily, unlocked the SF/... section and aligned the IM OSEMs. * We powered down the BS, SR3 and SR2 electronics in preparation for the power outage. ==== Plan for week of 9/10 ==== * Monday 9/10 is scheduled power outage. * Mark in US (job interview). * Hirata-san, Fabian, Kozu-kun, Panwei at Kamioka Tue-Fri. * Enzo at Kamioka Tue-Thu, then JPS Meeting Fri, then vacation. ===== Etc ===== * Recover from power outage. ===== SR2 ===== * Calibrate F0 LVDTs. * Calibrate IP LVDTs. * Cable geophones and any other remaining PI items. * Finish in-air cabling (sort out and relabel rack and feedthrough ends of any repurposed cables). * Do basic go/no-go test of electronic items. * Check SF keystone height and offload with FR as necessary. * Adjust ballast/trim mass of SF, with reserve for yaw stepper. * Set SF damper magnet ring height. * Check/tweak optic pitch. * TFs. ==== Plan for week of 9/17 ==== * Monday 9/17 is holiday (Respect for the Aged Day). * Enzo on vacation. * Mark, Hirata-san, Fabian, Panwei at Kamioka Tue-Fri. ===== SR2 ===== * Crane SR2 into tank. * Move SR2 in-air cables. * Remove First Contact. * Unlock and realign suspension. ===== SRM ===== * Set pitch of SRM and RM, tighten clamps, remove winch system. * Weigh IM/... section. * Build up SS to BF level. * Add BF. ==== Plan for week of 9/24 ==== * Monday 9/24 is holiday (Autumn Equinox). * Mark, Hirata-san, Fabian, Panwei at Kamioka Tue-Fri. * Suspend IM and tweak height/balance. ===== SRM ===== * Cable/test BF. * Install IRM. * Install/cable/test IM OSEMs. ==== 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)]] ==== Vacation Info ==== * Mark: 9/10-14 (job interview in US). * Enzo: 9/14 JPS, 9/15 through 10/8 vacation in Chile. |
==== Vacation/Travel Info ==== * Enzo's last day 3/29. * Terrence's last day for now, 3/29. * Mark compensation day for 3/21: 3/29. (He is not really typing these minutes, and anyone who sounds like him in the meeting is an impostor!) * Type B going-away party for Terrence/Enzo, 3/29 in Tokyo. * Terrence's next visit from 4/18. * Fabian's vacation 4/26 to 5/10. * Mark's vacation from about 5/22 to 6/11 (TBD). * Mark's final day 6/28. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for the week of 3/25
- Mark and Fabian helped Fujii-kun with PR2. The problem turned out to be two broken flags. Hirata-san drew up a design for a jig to help reglue the flags in situ.
Fabian documented the height budget for the Type B suspension in the wiki (KAGRA/Subgroups/VIS/OpsManual/TypeB/SR3Data etc).
- Terrence wrote up the final version of his OL diagonalization scheme.
- Terrence worked on L2P decoupling for the TM.
- Terrence and Mark edited the Type B Guardian to put turning on the payload damping later in the sequence, to help ensure that the OSEMs are not touching by the time they're needed (which can happen if the BF is buoyancy compensated for vacuum but the suspension is vented).
- Mark started on a big tidy-up of the cleanbooth.
Plan for week of 3/25
- Mark, Fabian at Kamioka Mon-Fri.
- Assist with PR2.
- Work on Type B paper.
- Tidy up.
- Throw out foil and other garbage.
- Gather and clean tools.
- Gather and organize unused parts and fasteners.
- Return all unused cables to tent.
- Tidy up cables in rear of SR2 rack.
Vacation/Travel Info
- Enzo's last day 3/29.
- Terrence's last day for now, 3/29.
- Mark compensation day for 3/21: 3/29. (He is not really typing these minutes, and anyone who sounds like him in the meeting is an impostor!)
- Type B going-away party for Terrence/Enzo, 3/29 in Tokyo.
- Terrence's next visit from 4/18.
- Fabian's vacation 4/26 to 5/10.
- Mark's vacation from about 5/22 to 6/11 (TBD).
- Mark's final day 6/28.