Agenda/Minutes of the VIS Meeting on 2017/9/8

2017/9/8 13:30 -

Participants:

Progress report

Schedule Chart

Type-A & Bp : (PDF,MPP)

Type-B: (PDF,MPP)

• Type-A: One week delay.
• Type-B:
• Type-Bp:

Type-A (Takahashi)

Past week report

[X-end]

4th(Mon)

• Implemented the release sensors on the end plate for F1.
• Put the F1 on the end plate.
• Suspended the F2 and follows from the F1.

5th(Tue)

• Calibrated the LVDT in F1.
• Tuned the F1. The condition was changed by closing the cap. The lowest frequency was larger than 0.4Hz.
• Assembled the twist pair flat cables.
• Assembled the bridge frame.

6th(Wed)

• Tuned the F1 changing the compression of blades.

7th(Thu)

• Continued the F1 tuning. The lowest frequency was about 0.4 Hz.
• Started the cabling between the F2 and the F1.

8th(Fri)

• Continued the cabling.

Plan for coming weeks

• Lift down the F2 and F1 into the corrugate tube.
• Adjust the load on BF from the cross tube.
• Finish the installation of F1.

Type B (Mark)

Past week report

Plan for coming weeks

Type-Bp (Shoda)

Past week report

Plan for coming weeks

IMMT (Ohishi)

Past week report

Plan for coming weeks

Watchdog system (Tanaka)

Past week report

Plan for coming weeks

Other site works

• End of Aug. to Nov.: Mozumi entrance will be closed

Safety

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

Discussion

• Sub-chiefs
• Coil driver circuit

  • Schematic

  • Watchdog
  • Output C
• Parameter list for the sensitivity curve calculation

  • https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0070/T1707038/006/kagra_sensitivity.pdf

Travel Plans

• Travel (Week of 9/11):
  • Takahashi: 11-12 (13 JPS)
  • Okutomi: 11-15
  • Sato: 11-15
  • Ishizaki:
  • Mark: 11-15 (13)
  • Fabian: 14-15
  • Hirata: 11-15
  • Enzo: 11-15
  • Shoda: 11-15 (13)
  • Ohishi: 14-15
  • Fujii:
  • Tanaka:
  • Yoshioka (Toyama):
  • Kozu (ICRR): 11-15
  • Arai (ICRR): 11-15
• Travel (Week of 9/18):
  • Takahashi: 19-22
  • Okutomi: 19-22
  • Sato: 19-22
  • Ishizaki: 19-21
  • Mark:
  • Fabian:
  • Hirata:
  • Enzo:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanaka:
  • Yoshioka (Toyama):
  • Kozu (ICRR):
  • Arai (ICRR):

Next meeting

On 2017/9/15(Fri)