Minute of KAGRA commissioning meeting

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• Date: 2018/4/17 11AM~12PM
• Attendance: Miyakawa, Kokeyama, Aso, Uchiyama, Miyoki, Akutsu
  • eZuce: Yamamoto, Suzuki, Shoda, Nagano

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1. Report of work of the last week and plan of work

• VAC:
  • Door was closed and pump down started. One large leak was found and it is being searched where it is.
• IFO, ETMs: Enomono, Ushiba
  • Michelson fringe was seen on DC and RF, but still mirror motion is too large.
  • Needs more work for damping for both ETMs, L2P of BS.
• DGS:
  • IO chassis of k1ioo was disconnected somehow. It is being checked now.
• DAQ:
  • Recoding minute_raw of k1fw1 moved to SSD at k1tw1. All fw0,1 tw0,1 are working well without any gap on data.

2. Operation

• Noise injection needs some preparations for speakers.
• Schnupp asymmetry need some preparations.
• Other plan seems to be ready.
• CBC will perform an online analysis.

3. Tasks or discussions

• Selection of full channel -> DGS Yamamoto

• Selection of science channel -> Commissioning Izumi

• Screens at control room
  • Sensitivity.
  • PEM.
  • Needs laser safety information.

• GW alert: online alert in the control room might be prepared. -> Togoshi

Others

• Laser power of oplev started dropping, specially lasers where are close to cryostat for year term.
• Phase 1 summarize should talk wide range view.
  • Type A has double stable point.
  • Monitor for water level, and vacuum gage for weekend should be implemented.
  • Patrol light should be implemented soon, even manual one.
• Next meeting: 4/24