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| At Kamioka (Mark, Ohishi-san, Enzo, Yoshioka-kun): * We installed the cut-down ballast mass under the IM and tweaked the IM height and balance. * We checked the range of the BF FR. * We adjusted the BF yoke by 2.5 mm to make it give ≈0 output for nominal height. * We found a good gain setting for the LVDT driver and calibrated the BF LVDT. * We set up the optical sensors facing the RM. * We assembled the IRM (with OSEMs) around the IM and got it mostly adjusted. * We changed the k1visbs model to restore the as-designed mapping of OSEMs to DAQ channels. * We confirmed that the BF LVDT actuation coil and the TM OSEM coils were working. * We connected up the IRM OSEMs (with the new Type 5-1.7 cables) but found there was an electrical issue: all the OSEMs are reading back the same constant value, around 1115. * We left the suspension in a state suitable for TFs from BF GAS actuation to sensing (in vertical) and from RM OSEM actuation to the optical sensors (in horizontal) over the weekend. At Mitaka (Hirata-san): * He got quotes for the SR assembly frame and did cost-reduction negotiations with Aso-san and Mirapro. got quotes for assembly frame. * He did 2D drawings and a parts list for the divided LBB dampers. * He contacted a company about SDC. * He made a 3D model and drawings for the SR wire clamps. |
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). |
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| ==== Plan for week of 8/28 ==== Kamioka: Mark (except Tue), Ohishi-san, Fabian (except Tue), Enzo (except Tue), Hirata-san, Yoshioka-kun (Fri), Kozu-kun (Thu, Fri). * Fix/adjust IRM OSEMs. * Add BF cap; cable and test BF-1 and BF-2 picos. * Lift and weigh BF/IRM/IM/RM/BS; adjust ballast mass. * Crane in SF. * Suspend BF/IRM/IM/RM/BS. |
==== Plan for week of 10/30 ==== |
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| ==== Plan for week of 9/4 ==== * Install SF cap; route cables. * Lift and weigh SF/BF/IRM/IM/RM/BS. * Adjust SF ballast. |
Kamioka: Mark and Enzo * Continue alignment of BS. * Realign OL. * Work on servos. |
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| ==== Vacation Info ==== Mark: TBD Mid-Oct |
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.