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Size: 2522
Comment:
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Size: 2929
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 7: | Line 7: |
| At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san): | |
| Line 9: | Line 8: |
| * Filed crane adapter ring to make it fit better on the hook. * Debugged the BF and SF LVDTs (the signal generator had lost its settings in the rack shutdown). * Debugged the TM-H4 OSEM problem (a "Type 3 extension cable had gone bad). * Weighed eyebolts used to lie the SF. * Shipped the old pico driver and joystick back to Mitaka for Eleonora. * Borrowed a second pico driver ("PR3") and set it and "BS" up in the rack. * Practiced driving the BF cap picos with the new drivers. * (With help from Miyo-kun) got the pico MEDM screens running. * Replace the temporary "PR3" driver with a new one "BS_BF", and renamed "BS" to "BS_IM". * Checked all the DIO connections to the LPCD and connected up the HPCDs. With help from Kokeyama-san we can now see all the drivers from EPICS. * Worked on balancing the BF/IRM/IM... section. Sometime during this work, the IM sank and would not come back to its proper position even with the fishing rod. We put a scale under the RM and found that the imbalance was 488 g. Using the fishing rod we got this down to 235 g, but we found that the direction of the stepper was not consistently related to the direction selected on the driver screen - we had previously noted that "left" was "up, but driving "up" the imbalance would decrease to 235 g and then start increasing again, indicating the stepper had bounced off some obstacle. (There was no obvious sound when this happened, unlike at the low end.) * We decided to give up on tuning the height of the IM with the fishing rod and to proceed with the test hang by locking the BF keystone at the desired height. * Hirata-san installed the PI fishing rod and magic wand, and did more work on changing the PI LVDT connectors from female to male. * Enzo made many edits to the circuit diagram, adding the DIO for the HPCDs and correcting minor mistakes. |
* 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. |
| Line 24: | Line 22: |
| ==== Plan for coming weeks ==== For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]]. |
==== 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) |
| Line 27: | Line 30: |
| Week of 4/17: * Install temporary ballast mass in SF. * Lift SF/BF/... section and check total weight and SF balance. * Continue swap of PI LVDT connectors (female->male) * Start preparing LBB spring units. Week of 4/24: * Crane in PI. * Connect SF/BF... section. * Temporarily remove PI and adjust SF ballast if necessary. |
==== 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