Agenda/Minutes of the VIS Meeting on 2018/6/8

2018/6/8 13:30 -

Zoom Meeting

Participants:

Progress report

Schedule Chart

Type-A : (PDF/MPP)

Type-B: (PDF/MPP)

Type-A (Takahashi)

Past week report

Plan for coming weeks

Type B (Mark)

Past week report

• Calculated the noise budget in pitch angular fluctuation. Compared with the actual spectra, it looks quite consistent. (calculation and actual spectra)The same calculation will be done for PRs as well.

Plan for coming weeks

Type-Bp (Shoda)

Past week report

• PR3
• There was not DAC output since 6/3. After rebooting k1pro0, it was fixed.

• PR2
• Some of BF LVDT had wrong polarity. They are fixed. It may happen when we released the SF GAS keystone.
• One of the IM coil drivers and GAS coil driver seems to be tripped. But no BIO signal is coming. Needs to be fixed.

Plan for coming weeks

OMMT & OSTM (Ohishi)

Past week report

Plan for coming weeks

LVDT Driver (Tanaka)

Past week report

• Delivery of parts(7915,7815) --> (6/6)

• I responded by exchanging abnormal parts of the power regulator U31(-15V 7915) and the line drivers U25,U30 and U29(THAT1646).

  • ReportJGW-E1808359(PDF)

  • Later,I would like to check the actual on KAGRA site.

Plan for coming weeks

• I am working on designing and researching them.

Other site works

Safety

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

Discussion

Travel Plans

• Travel (Week of 6/11):
  • Takahashi:
  • Okutomi:
  • Sato:
  • Ishizaki:
  • Mark:
  • Hirata:
  • Enzo:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanioka:
  • Tanaka:
  • Kozu (ICRR):
  • Arai (ICRR):
  • Terrence:
• Travel (Week of 6/18):
  • Takahashi:
  • Okutomi:
  • Sato:
  • Ishizaki:
  • Mark:
  • Hirata:
  • Enzo:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanioka:
  • Tanaka:
  • Kozu (ICRR):
  • Arai (ICRR):
  • Terrence:

Next meeting

On 2018/6/15(Fri)