Minute of KAGRA commissioning meeting

• Date: 2018/4/3 11AM~12PM
• Attendance: Uchiyama, Kokeyama, Yokozawa, Aso, Izumi, Nakano
  • eZuce: Miyakawa, Yamamoto(Kazuhiro), Suzuki, Hirose, Yamamoto, Inoue, Ushiba, Shoda, Kimura, Miyoki, Tomaru

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

• IFO: Izumi
  • Beam from both X and Y end was confirmed at REFL port.
• ETMs: Ushiba
  • ETMY damping mirror motion has been suppressed to ~1urad in yaw (Miyamoto).
  • ETMX has no heat link and is characterized without heat link. Heat link is connected on Thursday.
• RT model
  • Cable connection is almost done.
  • Dolphin should be connected as soon as possible. It can stop all models connected Delphin.
  • BS model will be splitted and one of them will be down sampled to 4kHz.
• Oplev: Ushiba
  • Test mas calibration was done.
  • Length oplev is not ready yet.
  • Marionette Oplev will be calibrated when door closed.
• CAL: Yamamoto, Yokozawa
  • RT calibration using IMC as training of calibration will be tested soon.
  • Off line calibration using FIR filter won't be used in phase 1.
• DAQ
  • k1tw0 is sometimes down as like other FWs.
  • SSD will be tested soon.

2. IFO check list

• It will be prepared soon.

3. Operation

• Please reply accommodation mail from Uchiyama-san.
• Think for emergency.

4. Tasks or discussions

• DAQ fix -> Miyakawa, Yamamoto

• 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

• Dust monitor using sapphire disk will be implemented around 4/10.
• Phase 1 summarize should talk wide range view.
• Monitor for water level, and vacuum gage for weekend should be implemented.
• Patrol light should be implemented soon, even manual one.
• Type A stable point.
• Pump down meeting meeting: 4/5, 4/11
• Next meeting: 4/10