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==== 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. |
==== 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 ===== SRM (lower priority) ===== ===== Etc ===== * Inspect all crane slots (SR, BS, PR) and check for missing bars and curtains. * Prepare for scheduled power outage on 9/10. |
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==== 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 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. ==== 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. |
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==== Plan for week of 6/25 ==== * Mark Enzo, Hirata-san, Kozu-kun, Terrence at Kamioka Mon-Fri. |
==== 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. |
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* Enzo: 9/14 JPS, 9/15 through 10/18 vacation in Chile * Terrence: 8/24-26 f2f, then returns to Hong Kong. |
* Mark: 9/10-14 (job interview in US). * Enzo: 9/14 JPS, 9/15 through 10/8 vacation in Chile. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
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
SRM (lower priority)
Etc
- Inspect all crane slots (SR, BS, PR) and check for missing bars and curtains.
- Prepare for scheduled power outage on 9/10.
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.
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
Vacation Info
- Mark: 9/10-14 (job interview in US).
- Enzo: 9/14 JPS, 9/15 through 10/8 vacation in Chile.