Agenda/Minutes of the VIS Meeting on 2018/8/10

2018/8/10 13:30 -

Zoom Meeting

Participants:

Progress report

Schedule Chart

Type-A : (PDF/MPP)

Type-B: (PDF/MPP)

Type-A (Takahashi)

Past week report

[Y-front]

• Put the ballast mass of 15.1kg on the keystone. The height of keystone was 10.0mm.
• Calibrated the LVDT.
• Checked the relative height of the F1 damper.
• Dismounted the pre-isolaotor and the bridge frame from the foothold.
• Implemented the cables between the F1 and the PI.
• Lifted down the EQ stop into the corrugate tube. The top ring sit on the frame lock.
• Adjusted the rotational direction and the center position of the EQ stop.
• Installed the PI into the top chamber.
• Hooked the wires to the receptacles. The filters were suspended from the TF.
• Removed the wire clamp.
• Implemented the cables from the PI to the feed through flanges.
• Started the tuning of TF. Digital output for the coil driver did not work.

[X-front]

• Released the BF.

Plan for coming weeks

• Setting of the pre-isolator in Y-front (tuning of TF, calibration of LVDT, tuning of IP)
• Setting of the pre-isolator in X-front (additional FR, yaw actuator).

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

• Sept 3 (Mon): Crane inspection 9:00 - 12:00
• Sept 5 (Mon): Crane inspection 9:00 - 13:00
• Sept 10(Mon): Planned power outage

Safety

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

Discussion

• Satellite box modification
• DAC channel rearrangement

  • https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8689

• SRM metal mirror

  • https://photos.app.goo.gl/zpR4DuDpdjSXZkKaA

Travel Plans

• Travel (Week of 8/13):
  • Takahashi:
  • Okutomi:
  • Sato:
  • Lucia:
  • Ishizaki:
  • Mark:
  • Hirata:
  • Enzo:
  • Terrence:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanioka:
  • Tanaka:
  • Kozu (ICRR):
  • Arai (ICRR):
• Travel (Week of 8/20):
  • Takahashi:
  • Okutomi:
  • Sato:
  • Lucia:
  • Ishizaki:
  • Mark:
  • Hirata:
  • Enzo:
  • Terrence:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanioka:
  • Tanaka:
  • Kozu (ICRR):
  • Arai (ICRR):

Next meeting

On 2018/8/23(Fri)