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 * Lifted down the maraging wire for the cryo-payload.

Agenda/Minutes of the VIS Meeting on 2017/3/31

2017/3/31 13:30 -

Participants:

Progress report

Schedule Chart : (PDF,MPP)

Type-A (Takahashi)

Past week report

Installation in Y-end: No work at the site.

  • Ordered some items for the X-end (chain blocks, hand lifter).
  • Preparing for the Type-A experiments (modification of geophone pod).

Plan for coming weeks

  • Lifted down the maraging wire for the cryo-payload.
  • Assemble the F2 stage.

Type B (Mark)

Past week report

  • Mark, Fabian, Enzo, Hirata-san at f2f - no site work.
  • Mark and Enzo worked on updates to suspension cabling diagram E1503600.
  • Hirata-san worked on 2D drawings for new BF ballast masses and PR/SR mirror box mods.

Plan for coming weeks

Week of 4/3
  • Clean up after floor work.
  • Prepare PI for moving.
    • Remove accelerometers.
    • Remove large weights.
    • Remove arc weights.
    • Attach lifting plates.
    • Wrap with clingwrap, cover with spare cleanbag.
  • Clear path to remove PI with forklift.
    • Move worktables.
    • Move portable cleanroom.
    • Shutdown rack and move electrical cables.
  • Prepare second floor for receiving PI.
    • Clean and clingwrap pallet.
    • Double-check dimensions.
    • Disconnect fan cables, curtain.
  • Crane PI into clean booth.

Week of 4/10
  • Add temporary ballast to SF.
  • Lift SF/BF/... section and check/adjust pitch/roll of SF and total weight.
  • Continue rearrangement of in-vacuum cabling past SF.
  • Prepare PI for craning onto assembly frame.
    • Finish installing LVDT coils.
    • ...
    • Find additional arc weights.

Type-Bp (Shoda)

Past week report

  • Preparation of the PR3 mirror (Miyo, Shoda)
    • Gluing went better than before. The wire breaker holding jigs did not glued together this time.
    • Mirror is packed. Ready to be shipped. The mirror will be shipped on Sunday and delivered on Monday morning.
    • Shoda think that the preparation is a bit inefficient since the tools are spread out at Kamioka and at Mitaka. It would be better if we can store all the gluing tools at the place we do gluing.

Plan for coming weeks

  • Complete TM/RM stage
    • Hang the mirror
    • Hang the RM
    • Measure the TF of RM/TM using photo sensors

IMMT (Ohishi)

Past week report

Plan for coming weeks

Watchdog system (Tanaka)

Past week report

  • Operational test(for power unit) acquisition and analysis of thermal data.-->ReportPDF(JGW-E1706434)

  • Main board(WDS main PCB) mounting and implementation.

Plan for coming weeks

  • Main board(WDS main PCB) mounting and implementation(Ongoing).

Safety

  • Incidents:
  • Foreseen risks
    • Type-A:
    • Type-B:
    • Type-Bp:

Discussion

Travel Plans

  • Travel (Week of 4/3):
    • Takahashi: 3-6
    • Shoda: 3-6
    • Mark: 3-6
    • Fabian: 3-6
    • Okutomi: 3-6
    • Fujii:
    • Ishizaki: ?-6
    • Hirata: 3-6
    • Sato: 3-6
    • Enzo: 3-6
    • Ohishi:
    • Tanaka:
    • Perry: 3-7
    • Sekiguchi(Hosei):
    • Hirayama(Hosei):
    • Wada (Ando Lab.): 3-5
  • Travel (Week of 4/10):
    • Takahashi:
    • Shoda:10-14

    • Mark:
    • Fabian:
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Sato:
    • Enzo:
    • Ohishi:
    • Tanaka:
    • Perry:
    • Sekiguchi(Hosei):11-14
    • Hirayama(Hosei):11-14

Next meeting

On 2017/4/7(Fri) F2F@Mitaka

KAGRA/Subgroups/VIS/VISMinutes20170331 (last edited 2017-03-31 14:20:24 by YoichiAso)