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Agenda/Minutes of the VIS Meeting on 2019/2/8

2019/2/8 13:30 - 14:34

Zoom Meeting

Participants: Mark, Hirata, Aso, Terrence, Fabian, Lucia, Takahashi, Sato, Ishizaki, Okutomi, Ohishi, Fujii, Enzo

Progress report

Schedule Chart

Site work schedule: [[|XLSX]]

Type-A : (PDF/MPP)

Type-B: (PDF/MPP)

Type-C: (XLSX)

Type-A (Takahashi)

Past week report

[X-front]

  • Replaced additional springs to pull back the receptacle.
  • Checked the motion of yaw rotation using the stepping motor. It could work.
  • Adjusted the tilt of IP using the jacks.

[X-end]

  • Connected the cryo-payload. Released the BF.

[Y-end]

  • Released the IP. It was unstable. Removed one arc of 19-mm ballast ring.
  • Centered the IP by stepping motors.
  • Measured transfer functions of IPL showed low Q. Removed one more arc of ballast ring. The cabling around IP was corrected.
  • The signal of LVDT for H3 was too small. Adjusted the demodulation phase in the driver.

Plan for coming weeks

  • Adjustment of the TF, the BF damper, and the IP in X-end (Week of Feb 18).

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

VIS electronics (Tanaka)

Past week report

Plan for coming weeks

Other site works

Safety

  • Incidents: no incident
  • Foreseen risks
    • Type-A: Crane work ?
    • Type-B: None

Discussion

Travel Plans

  • Travel (Week of 2/11):
    • Takahashi: 12-13
    • Okutomi:
    • Sato:
    • Lucia:
    • Fabian:
    • Mark:
    • Hirata:
    • Enzo:
    • Shoda:
    • Ohishi:
    • Fujii:
    • Tanioka:
    • Tanaka:
    • Terrence
  • Travel (Week of 2/18):
    • Takahashi: ??
    • Okutomi: 18-22
    • Sato:
    • Lucia:
    • Fabian:
    • Mark: 19-22
    • Hirata:
    • Enzo: 19-22
    • Shoda:
    • Ohishi:
    • Fujii: 19-22
    • Tanioka:
    • Terrence

Next meeting

On 2019/2/15(Fri)

KAGRA/Subgroups/VIS/VISMinutes20190208 (last edited 2019-02-15 20:13:52 by MarkBarton)