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| ==== Report for weeks of 5/14, 5/21 ==== * We weighted the IM/... section of the SR3. * We set up for the F0 blade prototype test. * Takahashi-san characterized the F0 prototype blades, and ordered final blades based on the BS and SR mass budgets. * Hirata-san characterized the LBB blades and identified three sets with blades of similar strength, plus two weaker ones. However he realized that M12x50 Bumax screws for the blade sets had not been ordered, so he got a new quote and ordered them for delivery 6/11. * Mirapro installed the mushroom section of the SRM tank. * We craned in the BF and cabled and tested the yaw pico, the FR stepper and the LVDT. * We hung the IM/... section from the BF, removed ≈200 g of trim mass and rearranged the rest to get the desired height, pitch and roll. * We added the sides of the IRM and the IM OSEMs, cabled the OSEMs, and adjusted everything to get good lateral and in/out alignment of the OSEMs. * Enzo did TFs using the IM OSEMs and the BF LVDT. * Hirata-san organized getting the LBB damper rings into the SR3 tank. He joined the halves of the Cu and magnet rings and got them ready for craning (which will happen later when we have rebuilt the SR3 IP and have somewhere to park the lid of the vacuum chamber). However he encountered a problem with the top ring: one of the screw holes in the top of the tank is not fully threaded, so one of the pillars supporting the top ring cannot be attached. He is considering various options. * Hirata-san and Kozu-kun made rod assemblies for the LBB damper rings. * Enzo made a batch of flipping and non-flipping feedthrough adapters. * Yamamoto-san connected up the SRM rack. |
==== Report for week of 10/8 ==== * This was Panwei's last week (for now at least) - thanks for all the help! * Thanks also to Terrence for visiting again for the week. ===== SR3 ===== * Terrence and Mark finished setting up the LEN half of the OL (Simon had roughly placed the components). They ran a new cable for LEN in the cable tray and relaid the cable for TILT to get it off the floor. * Terrence worked on diagonalizing the LEN OL. A report is forthcoming. ===== SRM ===== * Mark installed a pair of power supplies in the SRM and copied settings across to the SRM real-time model. * Fabian did lots of rack cabling, including installing and connecting BIO cards. * Mark and Hirata-san checked and adjusted the pitch of the BF (with a bubble level) and the IM/... section (with the OL. * Mark and Panwei installed the sides of the IRM and the IM OSEMs. * Hirata-san hung the dummy load from the F0 and started compressing the blade. There was a significant lateral offset (≈2-3 mm towards the blade at 5:30) at first but Takahashi-san advised that it would probably improve with compression, and it did. * Mark and Hirata-san cleared off most of two optical tables and a set of shelves in the OMMT area that Type B had been using but were now required by Somiya-san and Ohishi-san. We still need to remove the geophone and OSEM testing setups. |
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| ==== Plan for week of 5/28 ==== * Mark, Enzo at Kamioka Mon-Fri. * Hirata-san at Kamioka Tue-Fri. (Mon is monthly Mitaka day.) * Kozu-kun at Kamioka Mon only. (Rest of week is job interviews.) * TBD. ==== Plan for week of 6/4 ==== * Mark, Enzo, Hirata-san, Kozu-kun at Kamioka Tue-Fri. (Mon is NAOJ medical checkup.) * |
===== SR2 ===== * Mark, Enzo and Hirata-san all inspected the lower section of the SR2 to see if there were any interference points that might explain some unexpected peaks in the TFs that weren't present before installation. There were no stops touching, but some TM OSEM cables were rubbing against each other. [??? Did the fix work?] * We removed the tank lid, and Enzo and Panwei inspected the cabling that had been done during Enzo's vacation and installed some new cables that had arrived. They also unlocked the IP. ==== Plan for week of 10/15 ==== * Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri. ===== SR2===== * Continue shakedown. ===== SRM ===== * Align IRM with IM. * Suspend/weigh/balance the BF/... section. * Build up the AF and SS to the SF level. * Install the SF. |
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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 ==== | ==== Vacation/Visitor Info ==== * Terrence: 10/29-11/2 at Kamioka. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for week of 10/8
- This was Panwei's last week (for now at least) - thanks for all the help!
- Thanks also to Terrence for visiting again for the week.
SR3
- Terrence and Mark finished setting up the LEN half of the OL (Simon had roughly placed the components). They ran a new cable for LEN in the cable tray and relaid the cable for TILT to get it off the floor.
- Terrence worked on diagonalizing the LEN OL. A report is forthcoming.
SRM
- Mark installed a pair of power supplies in the SRM and copied settings across to the SRM real-time model.
- Fabian did lots of rack cabling, including installing and connecting BIO cards.
- Mark and Hirata-san checked and adjusted the pitch of the BF (with a bubble level) and the IM/... section (with the OL.
- Mark and Panwei installed the sides of the IRM and the IM OSEMs.
- Hirata-san hung the dummy load from the F0 and started compressing the blade. There was a significant lateral offset (≈2-3 mm towards the blade at 5:30) at first but Takahashi-san advised that it would probably improve with compression, and it did.
- Mark and Hirata-san cleared off most of two optical tables and a set of shelves in the OMMT area that Type B had been using but were now required by Somiya-san and Ohishi-san. We still need to remove the geophone and OSEM testing setups.
SR2
- Mark, Enzo and Hirata-san all inspected the lower section of the SR2 to see if there were any interference points that might explain some unexpected peaks in the TFs that weren't present before installation. There were no stops touching, but some TM OSEM cables were rubbing against each other. [??? Did the fix work?]
- We removed the tank lid, and Enzo and Panwei inspected the cabling that had been done during Enzo's vacation and installed some new cables that had arrived. They also unlocked the IP.
Plan for week of 10/15
- Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri.
===== SR2=====
- Continue shakedown.
SRM
- Align IRM with IM.
- Suspend/weigh/balance the BF/... section.
- Build up the AF and SS to the SF level.
- Install the SF.
To-Do Lists, Schedule
Vacation/Visitor Info
- Terrence: 10/29-11/2 at Kamioka.