Agenda/Minutes of the VIS Meeting on 2017/12/15

2017/12/15 15:00 -

Participants:

Progress report

Schedule Chart

Type-A : (PDF,MPP)

Type-B: (PDF,MPP)

• Type-A:
• Type-B:

Type-A (Takahashi)

Past week report

[X-end]

• Checked the ACCs with the drivers. The problem in cabling was not settled. We go to use the geophones as inertial sensors.
• Started preparation for the geophones.
• Made cables for the temperature monitor.

[Y-end]

• Tested the yaw picomoter in BF. The picomoter can work to align the cryo-payload, but the response was not smooth.
• Tested the FR in BF. The screw shaft was jammed due to the miss operation caused by power drop of the power supply.

[Front]

• Started the preparation for installation.
• Arranged the items in the 2F.
• Checked delivered EQ stops.

Plan for coming weeks

• X-end: Install the geophones. Close the chambers.
• Y-end: Repair the jamming of FR. Align the cryo-payload. Close the chambers.
• X-front: Preparation.

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

Watchdog system (Tanaka)

Past week report

• Plan the operation test again at KAGRA-->

  • DC power problem. —>Solved.(AC GND is different at KAGRA and Mitaka.)

  • Actual test of WD operation(Retest).—>Succeed.

    • Coil driver out —> WDS operated.

    • Real oscillation of IM2 . —>Real signal of the OSEM detected, and WDS operated.

  • Layout plan of this physical year(2017)checked.—>

    • Short type(about 1 - 2 m) of DC cable(For 18V) needs 16 cables.

    • Need machine time —> WDS operating levels are decisioned by real experiments.

Plan for coming weeks

• Start ordering mass production version.-->Ongoing(Formal request for quotation from the vendors).

  • Waiting for arrival of mailing(by paper quotation).
  • Start other ordering.

Other site works

Safety

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

Discussion

Travel Plans

• Travel (Week of 12/18):
  • Takahashi:
  • Okutomi:
  • Sato:
  • Ishizaki:
  • Mark:
  • Fabian:
  • Hirata:
  • Enzo:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanaka:
  • Kozu (ICRR):
  • Arai (ICRR):
• Travel (Week of 12/25):
  • Takahashi:
  • Okutomi:
  • Sato:
  • Ishizaki:
  • Mark:
  • Fabian:
  • Hirata:
  • Enzo:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanaka:
  • Kozu (ICRR):
  • Arai (ICRR):

Next meeting

On 2017/12/22(Fri)