Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

• Type B Past Week Summary
  • Fabian took photos of the cleanroom in the ATC to help decide whether it is a good place to assemble PIs for Type A/B.
  • Hirata-san wiped one set each of wires for the BS and RM (addition sets pending).
  • Hirata-san washed remachined locking parts for the IM and screws for jacks.
  • Hirata-san liaised with Ikenoue-san of ATC to get winch parts designed for the new wire thicknesses. Ikenoue-san provided updated designs for checking. (, )
  • Hirata-san worked on the Inventor 3D assembly of the SR2.
  • The scale for checking the masses of the IM parts was received.
  • Fabian and Hirata-san identified an issue with the lock screws between the IM and IRM. The screws were too tight in the holes and adjusting the size with a die caused large flakes of the black coating to come off. (These screws were ordered before the current screw policy was instituted.) Hirata-san will order better screws from Misumi and have additional machining done on them.
  • Fabian tracked down the calibration factors for the geophones and generated a calibrated plot.
• Type B ongoing issues
  • OSEMs

    • Akutsu-san is working to get wide-mouth OSEMs (2 assembled; first 4 expected to be assembled and washed by 8/8)

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

    • Connectors RECEIVED, cables being made.
  • SR machining test ongoing.
  • Lower breadboard stuff
    • Installation to be incorporated into the procedure document. Mark/Takahashi to discuss.
    • Breadboard springs (in manufacture, expected end of July)
  • Documents

    • BS Assembly Procedure E1504235, E1504235 draft

• To-do list during Mark's vacation
  • Weigh IM/RM/IRM (Fabian, Hirata) - DONE but anomalies found.
  • Pack/ship IM/RM/IRM to Kamioka (Hirata/Fabian).
  • Analyze geophone data (Fabian/Shoda) - data taken by Shoda-san; Fabian to find calibration factors.
  • Remove glue from dummy BS face (Fabian) - partly done.
  • Reglue flags and prisms (Tatsumi, Fabian)
  • Clean wire for BS and RM (Hirata) - DONE
  • Get new winch parts for new wire diameters - design received from Ikenoue-san
  • Do fit/function test of winches (Fabian/Hirata)
  • 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)
  • Write more of main assembly procedure (Mark)
• 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)
  • Check SR RM machining test progress (Hirata)