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Kamioka NAOJ Room + SeeVogh Kamioka TV conference room + SeeVogh

VIS Meeting on 2015/12/18

2015/12/18 13:30 -

Kamioka TV conference room + SeeVogh

Participants:

Schedule

  • Schedule status (Aso)
    • Latest schedule chart

PR

  • Test Hanging Status (Takahashi)
    • Installation into vacuum
    • Blowing test
    • Hammering test
    • Cabling
    • EQ stop release
  • PR2 Status (Mark, Fabian)
    • What can we do before the PR2 arrives
      • Preparation of the flags
        • Sand the Ni-plating on the magnets before gluing to increase the adhesion ? -> Preparation Status

        • Need to order spare flag bases: 6 of them (Takahashi) -> Status

  • Location of the EQ stop pillars (Takahashi)
    • Takahashi will tell Hirata the proper locations of the pillars.
  • Digital System (Okutomi, Fujii)
  • BF Optimal Weight (Takahashi)
    • Check the optimal load for the ETM BFs at the ATC: Need to be done before the end of Jan. Arrange with ATC people (Takahashi)
    • Balast mass design
  • Traverser actuation check (Shoda)
    • Now we may move the traverser in the air a little bit.
    • Will test it at some point.
  • Traverser stop mechanism
    • Procurement status (Takahashi)
  • Clean work procedure
    • Need to check with Miyoki-san when the clean suits will be delivered (Aso) -> 1/15

    • Ask Hirose-san about better wiping cloths (Aso): Texwipe Vectra Alpha 10 or TX8410. Asking if he has enough or we should order them.
    • KAGRA should have a special meeting for clean requirements: Aso had a meeting with Saito-san and Hirose-san. But the meeting was interrupted by a car accident. Will propose another meeting.
  • PR CAD model and assembly drawings (Hirata)
    • Need to give the rotation angle of the traverser top plate (Aso)
  • Cable status (Takahashi)
    • All the cables except for two cables were delivered.
      • Need to send more PTFE cable to finish the remaining two -> status

      • Need to send the cables used for the test hanging once it is finshed.
    • Made a cable list -> Put a link to the excel file on Wiki. Takahashi will improve the table.

  • Cable check
    • 70% done.
    • One cable found to be broken. Will send it back to the company -> status

  • Call for shift for assembly help (Takahashi)
    • Made a call for shift for helping the installation works -> status

  • PR2 wire breaker problem (Tatsumi)
    • Removal of the wire breakers
    • SUS wire breaker order status (Takahashi)
  • Wire cleaning (Hirata)
    • Hirata will order 20m more wires. -> status

    • Will wash Tungsten wire delivery status
  • Production of additional PR winches (Akutsu)
  • RM compensation mass
    • Design status (Fabian): Do it later.
    • Need to buy screws for fixing the compensation masses. Takahashi will check the lengths of screws.
  • PR Optical Bench (Akutsu)
    • For PR2, we do need to raise the optical bench.
      • Delivery date for the screws: Dec. 21
      • PR2 vacuum installation will be Jan. 19
  • OSEM assembly status (Akutsu)
    • OSEM screw length issue
      • We have a lot of M5x20 BUMAX screws
      • Do we need to use longer ones ? -> Shoda will check with the actual test mass RM -> Seems OK (5mm spare length)

  • RM production (Takahashi)
    • What to do with the dirty RMs ?: Check with ATC if re-polishing the rough surface is possible or not (Takahashi) -> status

  • Test hanging vacuum installation
    • What needs to be done when the suspension is inside the chamber ?
      • Transfer function measurement
      • Spectrum
      • Check the orientation of the mirror
      • Check the height with laser marker
  • List of what should be changed for PR3 hanging
  • Next week (from 12/21) plan
    • Test hanging
      • Mon:
      • Tue:
      • Wed:
      • Thu:
      • Fri:
    • PR2
      • Mon:
      • Tue:
      • Wed:
      • Thu:
      • Fri:
  • Travel (Week of 12/21)
    • Takahashi: Thu-Fri
    • Shoda: Mon-Fri
    • Mark: Mon-Tue
    • Fabian: Mon-Fri
    • Okutomi: Mon-Fri
    • Fujii: Mon-Fri
    • Ishizaki:
    • Hirata:
    • Ohishi:
  • Travel (Week of 1/4)
    • Takahashi:
    • Shoda:
    • Mark:
    • Fabian:
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Ohishi:

* Joris: 12/7 - 12/18

BS

  • BS Assembly Frame Design (Aso, Hirata)
  • BS flag design (Mark, Fabian)
  • BS gluing jigs (Tatsumi)
  • Not enough crane height problem (Hirata, Saito)
  • IP base clamp (Fabian)
  • Bread board spring (Takahashi)
  • BS clean bag (Aso)

ETM

  • ETM assembly frame (Aso)
    • Got a quotation
    • Need to include a clean bag frame

Other

  • bKAGRA preparation
    • List of tasks for: BS, Type-A, Type-Bp modification, IMMT (Takahashi) Set up a Wiki page (Aso)
  • Watch dog system (Tanaka)
    • Will present at an AEL meeting.
  • GAS blade inspection by Virgo (Takahashi)
    • To be shipped soon -> status

  • Request to the ATC for the next year
    • Production of the blades of the Type-A BF: We should check the consistency of the optimal load at the TAMA prototype experiment and G&M measurements (SF and TF) (Takahashi) -

      • SF: G&M 164.7kg, TAMA: 165.3kg

      • TF: G&M 276kg, TAMA: 278kg

    • No obvious reason to distrust G&M's measurements

    • Should consider in-situ measurement procedure of the optimal load during the installation of Type-A
  • Safety at the site (Takahashi, Ishizaki)

Next meeting

2015/1/8 (Fri) 13:30 - F2F@Mitaka

KAGRA/Subgroups/VIS/VISMinutes20151218 (last edited 2015-12-21 14:28:34 by RyutaroTakahashi)