Agenda/Minutes of the VIS Meeting on 2019/1/11

2019/1/11 13:30 -

Zoom Meeting

Participants:

Progress report

Schedule Chart

Type-A : (PDF/MPP)

Type-B: (PDF/MPP)

Type-C: (XLSX)

Type-A (Takahashi)

Past week report

[Y-end]

• Calibrated the LVDTs for BF damper.
• Started the evacuation of EYV chamber. The IP is touching the stopper.

[X-end]

• Prepared for the payload extraction. Fixed the BF and pushed down the keystone of TF.
• Replaced the yaw FR.

[X-arm measurement]

• Measurement campaign with X-arm was conducted.
  • Some stages were excited and then the couplings to the TML etc were measured.
  • Excited dofs were: TML / IML / MNL / IPL / (partly BFL) / BF-GAS / IMV / TMP
  • The purpose was to get the followings:
    • Vibration isolation performance (GND2TML)
    • force transfer functions of TML2TML, IML2TML, MNL2TML
    • couplings of V2L, P2L (somehow I forgot to measure Y2L coupling)
  • Now analysis is ongoing.

    • force TFs are in klog#7573

Plan for coming weeks

• Replacement of the yaw FR in X-front on 17-18.

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

Discussion

Confirmation of the VIS schedule for Jan.

Thesis defence practice

• Kozu-kun and Arai-kun: after the next VIS meeting (12/21)

Travel Plans

• Travel (Week of 1/14):
  • Takahashi:
  • Okutomi:
  • Sato:
  • Lucia:
  • Fabian:
  • Mark:
  • Hirata:
  • Enzo:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanioka:
  • Tanaka:
  • Kozu (ICRR):
  • Arai (ICRR):
• Travel (Week of 1/21):
  • Takahashi:
  • Okutomi:
  • Sato:
  • Lucia:
  • Fabian:
  • Mark:
  • Hirata:
  • Enzo:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanioka:
  • Tanaka:
  • Kozu (ICRR):
  • Arai (ICRR):

Next meeting

On 2019/1/18(Fri)