VIS Meeting on 2015/12/25

2015/12/25 13:30 -

Kamioka TV conference room + SeeVogh

Participants:

Schedule

• Schedule status (Aso)

  • Latest schedule chart

PR

• Test Hanging Status (Takahashi)
  • Transfer function measurements (Shoda)

  • OpLev (Shoda)

  • Mirror orientation confirmation (Shoda)
• PR2 Status (Mark, Fabian)
  • Flag preparation status (Fabian)
  • Spare flag order status (Takahashi)
• We need to secure things for water using Sunoko (duckboard).
• Location of the EQ stop pillars (Takahashi)
  • Locations were reported by Takahashi

    • Interference with OpLev (Akutsu)

• 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) -> Status

  • Balast mass design: Fabian will talk with Hirata on Monday. -> Status

• Traverser actuation check (Shoda)

  • Need to check the condition of the traverser. -> Status (Shoda)

• Traverser stop mechanism

  • Procurement status (Takahashi): Parts were delivered. Clean the parts on Monday (Hirata). -> Status

• Clean work procedure
  • Order clean wipes (Aso)

  • KAGRA should have a special meeting for clean requirements: Will propose another meeting. (Aso)

• 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 (Mark, Tatsumi)
  • Removal of the wire breakers (Mark)
  • SUS wire breaker order status (Takahashi)
• Wire cleaning (Hirata)

  • Hirata will order 20m more wires. -> Delivered. Will wipe in the next week. -> Status

  • Will wash Tungsten wire delivery status -> Delivered. Will wipe in the next week -> Status

• Production of additional PR winches (Akutsu)
  • 650um Tungsten wire test with 9.2kg is fine

  • Will test with 200um wires on Monday (7.2kg) with improved mass clamps (Hirata). -> Status

• RM compensation mass
  • Need to buy screws for fixing the compensation masses.

    • M6-16mm and M6-20mm are necessary. -> are these available ?

• 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)
• 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 ?

• List of what should be changed for PR3 hanging
  • People should share ideas whenever they come up with missing thigns.
  • Shoda made a spread sheet for keep tracking the ideas

    • https://docs.google.com/spreadsheets/d/1zZaLObWjDSEOTrr85Hz0ApXxEUChK3xJ_chk0f7r5nY/edit?usp=sharing

• Missing items(to be purchased soon)
  

  • Picomotor drivers (Takahashi)

  • Signal generators for LVDTs (Aso) -> Asking for quotation

  • Serial-Ethernet converter: 7 more (Shoda) -> Asked Ishizaki-san to buy them

  • Traverser motor driver (Shoda)

  • Turn backles (bigger and eye). Smaller shackles. (Aso) -> TBD

• Next week (from 1/4) plan
  • Test hanging
    • Mon:
    • Tue:
    • Wed:
    • Thu:
    • Fri: F2F@Mitaka
  • PR2
    • Mon:
    • Tue:
    • Wed:
    • Thu:
    • Fri: F2F@Mitaka
• Travel (Week of 1/4)
  • Takahashi: Mon-Thu
  • Shoda: Mon-Thu
  • Mark: Mon-Thu
  • Fabian: Tue-Thu
  • Okutomi: Mon-Tue (available)
  • Fujii:
  • Ishizaki:
  • Hirata:
  • Ohishi:
• Travel (Week of 1/11)
  • Takahashi:
  • Shoda:
  • Mark:
  • Fabian:
  • Okutomi:
  • Fujii: -
  • Ishizaki:
  • Hirata:
  • Ohishi:

* Joris: 1/11-1/29

* 1/18 Sekiguchi-kun's PhD defense

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)
  • Ordering in progress

Other

• bKAGRA preparation

  • List of tasks for: BS, Type-A, Type-Bp modification, IMMT (Takahashi) by the end of the next week. 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: Check the deadline for Virgo (Takahashi) -> Status

• Type-A Filters Optimal Load Measurements
  • If we can get help from ATC to measure the optimal load in Mitaka, it will be good.

  • Takahashi will make a plan for the optimal load check and ask ATC.-> Status ?

  • How to manufacture the long maraging wires ?
    • One prototype was machined by Ojima

    • Aoshima can do the heat treatment for the long rod. Will ask them soon (Takahashi) -> Status

    • How to test it ?
      • Use the unused assembly frame for Type-B ?
• Safety at the site (Takahashi, Ishizaki)

Next meeting

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