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Size: 2949
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Size: 2929
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| Deletions are marked like this. | Additions are marked like this. |
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| At Kamioka (Mark, Fabian, Enzo, Hirata-san): * Hirata-san and Sekine-san moved the tank lid and service port ring to the pallet with the crane and covered the open tank with the spare clean bag. * Hirata-san and Mark got the LBB damper rings assembled and installed. A joint part for the Cu ring needed to have holes enlarged because the hole pattern did not quite match that on the half-ring. The magnet ring is hanging in the chamber and the Cu ring is attached below it with clamps, ready to receive the rods that will hang down from the PI. * Hirata-san recounted all the unused cables. * Hirata-san installed the outrigger parts on the LBB, which will receive the rods coming down from the damper ring. * Enzo and Mark tested all the stepper motors. * Enzo and Mark debugged the PI horizontal LVDTs. One LVDT had a flaky connection and one card in the LVDT driver had three dead channels. Enzo created a fully working driver using parts from another driver that also had a faulty card. * Fabian adjusted the ballast mass on the SF to get good pitch/roll/vertical adjustment and attached it with screws. * Fabian set up the optical lever again (the PR2 team had repossessed the breadboard we had been using but Akutsu-san supplied another one). * Enzo and Mark tested the pico motors. The software is very unreliable, but we we able to confirm that the IM pitch pico works. * The whole team wrapped items and shut down equipment ahead of the power outage. ==== Plan for coming weeks ==== For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]]. |
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| Week of 6/12: * Cabling: * Debug/fix PI vertical LVDTs #0 and #2. * Calibrate PI vertical LVDT. * Debug/fix geophone #1. * Set yoke on PI vertical LVDT (if necessary). * Cable and test PI yaw stepper. * Cable and test PI vertical stepper. * Cable and test PI horizontal steppers. * Cable and test PI horizontal LVDTs. * Calibrate PI horizontal LVDTs. * Prepare LBB. * Attach LBB outriggers and rod receptacles. * Prepare LBB Cu ring. * Remove from tank, fix incompletely threaded holes, reinstall in tank. * Lay down spacers to protect magnets (in next step). * Prepare LBB magnet ring. * Disassemble. * Pass pieces into tank. * Reassemble on top of Cu ring. * Install LBB damper. * Bind LBB damper rings together with slings. * Remove vacuum tank lid and ring. * Crane rings up to install height, hook LBB magnet ring and support LBB Cu ring by TBD method. * Crane suspension into tank. * Hook LBB Cu ring. * Hook LBB. * Crane vacuum tank lid+ring black on. * Remove vacuum tank lid (only). * Remove port covers where feedthroughs will go, move feedthroughs from assembly frame and install on vacuum tank ring. * Reconnect in-air cables. |
* Mark finished the OL calibration/diagonalization calculation and wrote it up as klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=3835|3835]] and [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7205| T1707205-v4]]. * We glued the prisms and magnets on the SR2. * We got Miyo-kun to set up the SR2-IM pico driver and tested it and the picos that will be used in the IM. * We weighed the BF for the SR2. * Enzo put DIO cards in the IO chassis and cabled them to the coil drivers. * Enzo found more of the in-vacuum cables that will be needed for SR2. Only a few remain to be found. * Enzo and Shoda-san installed the vacuum-feedthroughs on the assembly frame and routed many of the in-air cables. * Hirata-san and Mark moved the PR/SR trolley system from SR3 to SR2, reconfigured the top of the assembly frame and checked the crossbar heights. (Everything was quite close to the drawing, but a few small adjustments up/down will be required.) * Fabian found an issue with the IM: we have two of the upper movable masses and no lower ones. Probably one of the PRs has been built with two lower masses. Unfortunately an upper mass has an extra hole in an inconvenient place and can't be used as a lower mass. Hirata-san ordered a suitable plug part from Misumi, and Fabian washed it and glued it in with EP30. * Fabian assembled the RM and test-assembled the IRM. (The IRM will have to be partly disassembled during installation.) * Shoda-san and Enzo got all the control loops working on the BS, and worked with Izumi-san to steer the beam down the Y-arm. They found the passive damping was not working very well, even after correcting a 1.5 mm height error in F0. We may need to lower the damper ring. * Shoda-san created a BS Guardian. * We got Yamamoto-san to connect up the SR2 rack and create an SR2 real-time model. ==== Plan for week of 12/18 ==== * Shoda-san vacation * Mark, Fabian, Enzo, Kozu-kun at Kamioka Mon-Wed. * Find plumb bob. * Assembly frame alignment and optical table centering. (Mark and Hirata) * Finish IM assembly and pico test. (Fabian and Enzo) * Do inventory of ballast masses. (Fabian) ==== Plan for week of 12/25 ==== * Mark, Enzo, Fabian vacation * Shoda-san, Kozu-kun, Hirata-san at Kamioka Mon-Thu. * Install IM ring interface blocks and IM ring. * Install new jack receptacles (in SR3 area, second floor) on load gauge adapter (SR2 area, second floor). (Hirata-san) * OL setup. ==== Plan for week of 1/9 ==== * Mark, Fabian, Enzo, Shoda-san at Kamioka Tue-Fri. * Hang SR and RM. ==== Vacation Info ==== * Mark 12/22-1/3 * Enzo, 12/21-12/27 (but ''not'' 12/28) * Fabian 12/22-1/5 * Hirata-san 12/21-22 (conference) * Shoda-san 12/18-21 |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past week report
Mark finished the OL calibration/diagonalization calculation and wrote it up as klog 3835 and T1707205-v4.
- We glued the prisms and magnets on the SR2.
- We got Miyo-kun to set up the SR2-IM pico driver and tested it and the picos that will be used in the IM.
- We weighed the BF for the SR2.
- Enzo put DIO cards in the IO chassis and cabled them to the coil drivers.
- Enzo found more of the in-vacuum cables that will be needed for SR2. Only a few remain to be found.
- Enzo and Shoda-san installed the vacuum-feedthroughs on the assembly frame and routed many of the in-air cables.
- Hirata-san and Mark moved the PR/SR trolley system from SR3 to SR2, reconfigured the top of the assembly frame and checked the crossbar heights. (Everything was quite close to the drawing, but a few small adjustments up/down will be required.)
- Fabian found an issue with the IM: we have two of the upper movable masses and no lower ones. Probably one of the PRs has been built with two lower masses. Unfortunately an upper mass has an extra hole in an inconvenient place and can't be used as a lower mass. Hirata-san ordered a suitable plug part from Misumi, and Fabian washed it and glued it in with EP30.
- Fabian assembled the RM and test-assembled the IRM. (The IRM will have to be partly disassembled during installation.)
- Shoda-san and Enzo got all the control loops working on the BS, and worked with Izumi-san to steer the beam down the Y-arm. They found the passive damping was not working very well, even after correcting a 1.5 mm height error in F0. We may need to lower the damper ring.
- Shoda-san created a BS Guardian.
- We got Yamamoto-san to connect up the SR2 rack and create an SR2 real-time model.
Plan for week of 12/18
- Shoda-san vacation
- Mark, Fabian, Enzo, Kozu-kun at Kamioka Mon-Wed.
- Find plumb bob.
- Assembly frame alignment and optical table centering. (Mark and Hirata)
- Finish IM assembly and pico test. (Fabian and Enzo)
- Do inventory of ballast masses. (Fabian)
Plan for week of 12/25
- Mark, Enzo, Fabian vacation
- Shoda-san, Kozu-kun, Hirata-san at Kamioka Mon-Thu.
- Install IM ring interface blocks and IM ring.
- Install new jack receptacles (in SR3 area, second floor) on load gauge adapter (SR2 area, second floor). (Hirata-san)
- OL setup.
Plan for week of 1/9
- Mark, Fabian, Enzo, Shoda-san at Kamioka Tue-Fri.
- Hang SR and RM.
Vacation Info
- Mark 12/22-1/3
Enzo, 12/21-12/27 (but not 12/28)
- Fabian 12/22-1/5
- Hirata-san 12/21-22 (conference)
- Shoda-san 12/18-21