Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

• 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 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.
  • The RM, IM and IRM were weighed, and wrapped/packed for shipment to Kamioka.
  • Mark made a checklist of all the parts of the BS mirror box and gluing jig, to help with collecting the parts from Kashiwa.
  • Mark, Fabian and Hirata-san retrieved the dummy BS and mirror box from Kashiwa.
  • Fabian designed an extra 600 g of trim masses for the IM and Hirata-san made drawings and ordered them. The design allows for the masses to be added to the IM even after it has been placed in the assembly frame and the dummy optic and RM have been hung, so it should not delay work.
  • Mark worked on the schedule, making the next few weeks more realistic and incorporating the new plan for the SR RMs (the test will be used for SR2 but two more will be made from scratch next financial year).
  • Fabian worked on the payload assembly procedure.
  • Hirata-san washed 7 OSEMs for Akutsu-san, and various other parts for Yamamoto-san of ICRR.
  • Hirata-san removed the remaining glue from the BS primary and secondary prisms, as well as the prisms removed from the PR hanging test mirror. (The small sapphire prisms for the PR were not intended to be reused and one had already broken at Kashiwa, but the metal PR secondaries can and will be used again.)
• Type B ongoing issues
  • OSEMs

    • Akutsu-san is working to get wide-mouth OSEMs (2 assembled; another few were assembled and a batch of 7 were washed.

  • Longer cables for BF->PI and SF->PI.

    • Connectors RECEIVED, cables being made.
  • Lower breadboard stuff
    • Installation to be incorporated into the procedure document. Mark/Takahashi to discuss.
  • Documents

    • BS Assembly Procedure E1504235, 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) - MOSTLY DONE.
  • Reglue flags and prisms (Tatsumi, Fabian) - from Friday 8/5.
  • 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)