Differences between revisions 39 and 40
Revision 39 as of 2016-07-15 13:21:53
Size: 3709
Editor: MarkBarton
Comment:
Revision 40 as of 2016-07-22 10:37:42
Size: 2937
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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  * Hirata-san ordered and received wire for the BS and RM (will be cleaned 7/19).
  * Hirata-san received remachined locking parts for the IM (will be cleaned 7/19).
  * Hirata-san ordered additional Misumi parts to be used with the IM locking parts.
  * Fabian and Hirata-san weighed the masses that they've been constructing in the cleanroom and found a 600 g discrepancy from the Inventor (too light) for the IM. Although the density assumed in the Inventor agrees with spec sheet values, it doesn't match the parts. Adjusting the density to match a few key parts reduces the discrepancy to 60 g. More investigation is planned.
  * Hirata-san ordered a medium-capacity scale to weigh the individual parts more precisely and help locate the discrepancy.
  * Hirata-san organized to do a fit/function test of the BS winches and training session with Ikenoue-san of ATC on 7/25.
  * Hirose-san and his team successfully removed the misglued prisms from the dummy BS.
  * Fabian travelled to Kashiwa and removed most of the glue from the face of the dummy BS (where the flags had been). There is still some adhesive remaining on both the face and barrel, which will require more work in a second trip.
  * Shoda-san took a suitable segment of geophone noise data for analysis. Fabian will track down the calibration factors.
  * Hirata-san worked on 2D drawings for the PI cable clamps and the magnetic damper for the lower breadboard.
  * Hirata-san worked on the 3D assembly for SR2.
  * 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.
  * 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.
Line 30: Line 26:
  * Apply grease to jacks for assembly frame (Takahashi) - DONE
  * Finish assembly of BS IM, RM and IRM (Fabian) - DONE
Line 36: Line 30:
  * Remove prism from dummy BS (Hirose, Fabian?) - DONE
Line 38: Line 31:
  * Buy wire for BS and RM (Hirata) - DONE
  * Clean wire for BS and RM (Hirata) - 7/19
  * Do fit/function test of winches (Fabian/Hirata) - ORGANIZED for 7/25
  * 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)
Line 43: Line 36:
  * Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - just started.   * Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - ONGOING.

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.
    • 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
    • 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
  • 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)

KAGRA/Subgroups/VIS/TypeB/Minutes (last edited 2022-07-01 13:49:37 by fabian.arellano)