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| * Type B Past Week Summary * Mark, Fabian and Hirata-san cleaned glue off the dummy BS, attached Akutsu-san's new SS mirror plates, reglued the flags and prisms, and removed the gluing hardware, so the dummy BS is ready for shipping. Tatsumi-san's refinements to the tooling (especially the new flag holders) worked very smoothly. We were more generous with the glue and much more careful with the alignment of the prisms to the barrel, both during rehearsal and the final gluing. * Mark wrote up the gluing procedure as a new document [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5505| E1605505]]. (The original plan was to do an addendum to Tatsumi-san's PR gluing procedure JGW-E1504248, but there was too much material.) * Hirata-san organized with Takahashi-san to get the BS payload masses shipped to Kamioka. They will go in an air-ride truck on Wed 8/17 together with a load of Type A stuff, and will arrive early on Thu 8/17. * Hirata-san shipped the collection of Type B fasteners to Kamioka, to arrive Mon 8/15. * Hirata-san measured another standard filter and cleaned various parts for people. * Hirata-san worked on the SR2 Inventor assembly. He spotted a problem with the orientation: given the position of the pistons in the SR2 tank (according to the assembly from Mirapro), mating the standard Type B SR chain and the chamber in the natural way puts the optic at 90° to what it needs to be. A similar problem was found in the Type B Test at Mitaka, and it was eventually worked around, but with some difficulty. Hirata-san will investigate the best way of making a correction. * Komori-kun, Kuwahara-kun and Akutsu-san calibrated an initial batch of 7 wide-mouthed OSEMs. They will be shipped to Kamioka on Friday. * Fabian worked on the payload assembly procedure. * Type B ongoing issues * OSEMs * First batch of 7 ready for shipping. * Longer cables for BF->PI and SF->PI still not received, Takahashi-san to check status. * Lower breadboard stuff * Installation to be incorporated into the procedure document. Mark/Takahashi to discuss. * Documents * BS Assembly Procedure [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235| E1504235]], [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|E1504235 draft]] * To-do list during Mark's vacation * Weigh IM/RM/IRM (Fabian, Hirata) - DONE * New trim mass - ORDERED. * Pack/ship IM/RM/IRM to Kamioka (Hirata/Fabian) - READY TO SHIP. * Analyze geophone data (Fabian/Shoda) - DONE. * Remove glue from dummy BS face (Fabian) - DONE. * Reglue flags and prisms (Tatsumi, Fabian) - DONE. * Clean wire for BS and RM (Hirata) - DONE * Get new winch parts for new wire diameters - ORDERED, expected 8/5. * Do fit/function test of winches (Fabian/Hirata) - fit test DONE, function test from 8/8 * Ship winches to Kamioka (Hirata/Fabian) * Work on BS simulation (Fabian) * Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - ONGOING. * Write more of payload assembly procedure (Fabian) - ONGOING * Write more of main assembly procedure (Mark) - ONGOING * Longer term to-do list * Do BS Simulink model (Mark, Kokeyama) * Do 2D drawings of SR2 parts (Hirata) * Redesign SRx IM wire clamps for larger prisms, remachined RMs * Order SRM/PRM parts (Hirata/Shoda) * Order SRx fasteners (Hirata) |
=== Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun, Kozu-kun): * We disconnected the SF/... section and reinstalled the F0-SF rod with the hex cable clamp attached. * We debugged an issue with the actuation (the real-time model needed rebooting). * We routed all the SF/... cables up to the bottom of the PI, and then to the feedthroughs. * We unlocked the F0 keystone and experimented to find the amount of mass needed on the SF (≈845 g). * We attached the SF trim mass, adjusting it laterally so that the SF was level in pitch and roll. * We corrected some errors on the MEDM screens (some broken links and Take/Restore Safe.snap buttons). * We cabled all the PI items through to the rack and did very basic testing. * We disconnected the security structure from the assembly frame and adjusted the PI till the SS was vertical. * We unlocked the IP and adjusted the PI jacks and FRs till the IP was centered. * We passed the halves of the LBB Cu damping ring (less the Cu) into the chamber and joined them. * We put the magnets on the LBB damper ring using the template. * We locked various combinations of keystones and measured the vertical resonance frequencies of the unlocked filters. * We spent time on getting the geophones working. The original descrambler adapters had gone missing, so Enzo created three new ones. We borrowed a cable to replace one that had broken. The geophone distributor (S1402167) failed (no power on the negative rail), and a replacement borrowed from SR3 (S1605513) kept switching off. ==== Plan for week of 9/19 ==== No work Mon 9/18 (敬老の日)<<BR>> Mark, Fabian, Enzo, Ohishi-san, Hirata-san, Yoshioka-kun (Tue, Wed, Thu, Fri), Kozu-kun * Double check BS pitch with OL. * Adjust SF damper ring to correct gap. * Install lock nuts on F0 GAS FR at TBD positions. * Lock BF and F0 keystones (but ''not'' SF keystone). * Lock RM to BS and IRM to IM. * Lock RM, IRM and BF (but not SF) to security structure. * Lock IP. * Remove F0 keystone top plate (including yaw stepper) and immobilize SF/... in yaw. * Attach lifting fixture. * Remove BF- and SF-level crossbars. * Remove geophones for craning. * Disconnect in-vacuum cables from feedthrough and coil neatly for craning. * Attach lifting plates. * Attach Cu segments to LBB damper ring (needs Cu segments and BUMAX countersunk screws, expected 9/20). * Pass halves of LBB magnet ring into tank, join, and make sandwich for craning. * Crane tank lid off. * Crane LBB damper rings to top of tank and suspend. * Crane suspension out of assembly frame. * Attach LBB upper rods to LBB blade tips and rotate suspension 45° clockwise. * Crane suspension into tank and connect upper rods to LBB Cu ring. * Unclamp LBB ring "sandwich" so LBB Cu ring is suspended on upper rods. * Install LBB lower rods and hook LBB. * Measure required ballast for LBB. * Unlock suspension and readjust. * Move in-air cabling and feedthroughs and reconnect in-vacuum cables (through Cu O-rings). ==== Plan for week of 9/25 ==== TBD * Debug cabling. * Run TFs. * Install LSOL? ==== Vacation Info ==== Mark: 10/16-24 |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past week report
At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun, Kozu-kun):
- We disconnected the SF/... section and reinstalled the F0-SF rod with the hex cable clamp attached.
- We debugged an issue with the actuation (the real-time model needed rebooting).
- We routed all the SF/... cables up to the bottom of the PI, and then to the feedthroughs.
- We unlocked the F0 keystone and experimented to find the amount of mass needed on the SF (≈845 g).
- We attached the SF trim mass, adjusting it laterally so that the SF was level in pitch and roll.
- We corrected some errors on the MEDM screens (some broken links and Take/Restore Safe.snap buttons).
- We cabled all the PI items through to the rack and did very basic testing.
- We disconnected the security structure from the assembly frame and adjusted the PI till the SS was vertical.
- We unlocked the IP and adjusted the PI jacks and FRs till the IP was centered.
- We passed the halves of the LBB Cu damping ring (less the Cu) into the chamber and joined them.
- We put the magnets on the LBB damper ring using the template.
- We locked various combinations of keystones and measured the vertical resonance frequencies of the unlocked filters.
- We spent time on getting the geophones working. The original descrambler adapters had gone missing, so Enzo created three new ones. We borrowed a cable to replace one that had broken. The geophone distributor (S1402167) failed (no power on the negative rail), and a replacement borrowed from SR3 (S1605513) kept switching off.
Plan for week of 9/19
No work Mon 9/18 (敬老の日)
Mark, Fabian, Enzo, Ohishi-san, Hirata-san, Yoshioka-kun (Tue, Wed, Thu, Fri), Kozu-kun
- Double check BS pitch with OL.
- Adjust SF damper ring to correct gap.
- Install lock nuts on F0 GAS FR at TBD positions.
Lock BF and F0 keystones (but not SF keystone).
- Lock RM to BS and IRM to IM.
- Lock RM, IRM and BF (but not SF) to security structure.
- Lock IP.
- Remove F0 keystone top plate (including yaw stepper) and immobilize SF/... in yaw.
- Attach lifting fixture.
- Remove BF- and SF-level crossbars.
- Remove geophones for craning.
- Disconnect in-vacuum cables from feedthrough and coil neatly for craning.
- Attach lifting plates.
- Attach Cu segments to LBB damper ring (needs Cu segments and BUMAX countersunk screws, expected 9/20).
- Pass halves of LBB magnet ring into tank, join, and make sandwich for craning.
- Crane tank lid off.
- Crane LBB damper rings to top of tank and suspend.
- Crane suspension out of assembly frame.
- Attach LBB upper rods to LBB blade tips and rotate suspension 45° clockwise.
- Crane suspension into tank and connect upper rods to LBB Cu ring.
- Unclamp LBB ring "sandwich" so LBB Cu ring is suspended on upper rods.
- Install LBB lower rods and hook LBB.
- Measure required ballast for LBB.
- Unlock suspension and readjust.
- Move in-air cabling and feedthroughs and reconnect in-vacuum cables (through Cu O-rings).
Plan for week of 9/25
TBD
- Debug cabling.
- Run TFs.
- Install LSOL?
Vacation Info
Mark: 10/16-24