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 *3/8 or 3/9 no car in the access tunnel

Agenda/Minutes of the VIS Meeting on 2018/3/2

2018/3/2 13:30 -

Participants:

Progress report

Schedule Chart

Type-A : (PDF/MPP)

Type-B: (PDF/MPP)

Type-A (Takahashi)

Past week report

[X-front]

  • Finished the cabling between the BF and F3.
  • Tuned the F3 again with hanging the F3 by crane.
  • Final optimal load was additionally 1.2kg at 0.25Hz.
  • Removed the primary coils for the BF damper.
  • Checked cable connections and repaired some disconnections.
  • Started the installation of F2. Assembled the FR in the F2.

Plan for coming weeks

[X-front]

  • Measure the transfer functions of the BF and the F3.
  • Lift down the BF into the corrugate tube.
  • Extend the EQ stop for the F2.

[X-end]

  • Vent the chamber on 5th.
  • Remove the DP on 6th.
  • Install the maraging wire for Cryo-payload with cables on 7th.

Type B (Mark)

Past week report

Plan for coming weeks

Type-Bp (Shoda)

Past week report

Plan for coming weeks

OMMT & OSTM (Ohishi)

Past week report

Plan for coming weeks

Watchdog system (Tanaka)

Past week report

  • Preparation for assembly of mass products.-->Ongoing.

  • Adjustment and approval to vendors(Implementation adjustments and approvals for circuit boards.)-->

    • Delivered( 5 of 6 substrates and Cables(assembled)).
    • There are two casings yet(Adjusting with vendor)
    • Operation test of the initial product is completed. And I ordered the production of the residual mass-produced products.-->Pending delivery.

Plan for coming weeks

  • Preparation for assembly of mass products.-->

    • Programming and Unit Testing(59 Items)
    • Other necessary preparations.
  • Adjustment and approval to vendors(Negotiating to guarantee machining delay of cases).

Other site works

  • 2/26 - 3/9 Construction of the walls to isolate the arms better (for cleanliness) *3/8 or 3/9 no car in the access tunnel
  • 3/12 - 3/16 Installation of the control systems for the large GVs
  • 3/12 - Center area: preparation for pump down: connecting ducts.

Safety

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

Discussion

  • Center area pump down
    • Vacuum flange status
    • Securing cables
    • OpLev monitoring

    • Drift monitoring during pump down
  • Phase 1 operation measurements
    • Minimum success criteria for each measurement
    • Who will do the task

Travel Plans

  • Travel (Week of 3/5):
    • Takahashi:
    • Okutomi:
    • Sato:
    • Ishizaki:
    • Mark:
    • Fabian:
    • Hirata:
    • Enzo:
    • Shoda:
    • Ohishi:
    • Fujii:
    • Tanaka:
    • Kozu (ICRR):
    • Arai (ICRR):
  • Travel (Week of 3/12):
    • Takahashi:
    • Okutomi:
    • Sato:
    • Ishizaki:
    • Mark:
    • Fabian:
    • Hirata:
    • Enzo:
    • Shoda:
    • Ohishi:
    • Fujii:
    • Tanaka:
    • Kozu (ICRR):
    • Arai (ICRR):

Next meeting

On 2018/3/9(Fri)

VIS Meeting in Mitaka: 3/16

KAGRA/Subgroups/VIS/VISMinutes20180302 (last edited 2018-03-02 16:33:52 by YoichiAso)