|
Size: 2021
Comment:
|
Size: 797
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 8: | Line 8: |
| * With help from Kokeyama-san and Miyakawa-san, we debugged a problem with the real-time model freezing, which turned out to be the IO chassis shutting down because of brownout condition from an overloaded AC circuit. A combination of extra boxes added to the rack, plus surge current from the air shower could draw the full 20 A limit of the circuit. Awai-san ran a cable to a separate circuit and we moved the IO chassis onto that. * We got the stepper motor cabling and driver working, and tested the BF fishing rod stepper motor. * We got the LVDT cabling, driver and associated parts of the real-time model working. * We suspended the BF and payload to check the weight and balance after adding balance mass. The weight was spot-on and the balance was OK (about as expected and close enough to be corrected). However the height and balance of the IM was disturbed again. * Fabian worked on the redesign of the ballast masses. * Hirata-san found all the parts for the SF and the SF section of the security structure, and prepared the SF. However we then removed the Cu ring from the top cap for recleaning. * We worked with Sawada-san to get the wheels removed from the large stepladders so that could be put closer to the assembly frame for comfort and safety. * We cleaned up after a water leak from the ceiling. * We straightened the hexagonal poles in the bottom level of the security structure, in preparation for adding the new EQ stops for the RM. |
* Hirata-san did an inventory of SR and other parts at Kamioka. * Mark and Enzo finalized the geometry matrices for the IP, entered them in MEDM and updated the safe.snap. * Mark, Enzo and Fabian worked with Izumi-san et al. to align the BS. We got the +Y beam fairly close to aligned (to the second gate valve, near IY). |
| Line 18: | Line 12: |
| ==== Plan for coming weeks ==== Next week: * Everyone (Mark, Fabian, Enzo, Hirata-san) at Kamioka, Monday-Friday. * Readjust height and balance of BF+payload, add SF. * Get picomotor driver working. Week after next: * Everyone (Mark, Fabian, Enzo, Hirata-san) at Kamioka, Monday-Friday. * Continue adding SF and suspend BF. |
==== Plan for week of 10/30 ==== Kamioka: Mark and Enzo * Continue alignment of BS. * Realign OL. * Work on servos. Mitaka: Fabian and Hirata-san * SR procurement. * New PI GAS FR design. * BS LBB ballast mass design. * SR cable lamp design. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past week report
At Kamioka (Mark, Fabian, Enzo, Hirata-san):
- Hirata-san did an inventory of SR and other parts at Kamioka.
- Mark and Enzo finalized the geometry matrices for the IP, entered them in MEDM and updated the safe.snap.
- Mark, Enzo and Fabian worked with Izumi-san et al. to align the BS. We got the +Y beam fairly close to aligned (to the second gate valve, near IY).
Plan for week of 10/30
Kamioka: Mark and Enzo
- Continue alignment of BS.
- Realign OL.
- Work on servos.
Mitaka: Fabian and Hirata-san
- SR procurement.
- New PI GAS FR design.
- BS LBB ballast mass design.
- SR cable lamp design.