Agenda/Minutes of the VIS Meeting on 2019/7/12

2019/7/12 13:30 -

Zoom Meeting

Participants:

Progress report

Type-A (Takahashi)

Past week report

• Updated the Real-time model & medm for the Type-A payload.

  • The direct feedback paths from TM OpLev to the upper stages are reimplemented.

  • The generic feedback path (OLSERVO, so-called band-path comb paths) updates:

    • The number of channels increased: 12ch -> 24 ch

    • The output paths increased: only (L, P, Y) DoFs -> all controllable DoFs in the payload

  • Driving matrices have been separated for each of local-based and global-based signals.
  • Decoupling matrices for the photo-reflective sensors have been prepared.
    • The diagonalization of these matrices is not implemented yet. We'll do at the moment of necessity.
  • DAQ channel reduction is reflected on the current running models.

    • We found that the DAQ assignment on the channels TM_OPLEV_TILT_(PIT/YAW)_OUT is accidentally disabled. -> recovered.

  • The messy overview screen was rearranged.
• Damping filter implementation on the payload is ongoing.
• Study on the deformation of base plate in the GAS filter with the ATC staff.

Plan for coming weeks

Type-B

Past week report

Plan for coming weeks

Type-Bp

Past week report

Plan for coming weeks

OMMT & OSTM (Takahashi)

Past week report

• Asking quotations for the modification parts in the mirror gluing jig and the standoff.
• Preparing for shipping of the suspension.
• The mirror will be ready in October.

Plan for coming weeks

• Test the OSEMs at the site.
• Confirm some dimensions on the present OMMT/OSTM suspensions.

VIS electronics

Past week report

Plan for coming weeks

Other site works

Safety

• Incidents:

Discussion

• VIS talk slots at the August F2F

Travel Plans

• Travel (Week of 7/15):
  • Takahashi: 16-19
  • Sato:
  • Hirata:
  • Shoda:
  • Fujii:
  • Tanaka:
  • Terrence:
• Travel (Week of 7/22):
  • Takahashi:
  • Sato:
  • Hirata:
  • Shoda:
  • Fujii:
  • Tanaka:
  • Terrence:

Next meeting

On 2019/7/19(Fri)