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  * X end PD will be removed and Baffle PD will be located instead. Changing PD will be done around 3/26.    * Simple calibration will be implemented.
* X end PD will be removed and Baffle PD will be located instead. Changing PD will be done in the week of 3/26.
   * BURNDY to D-SUB9pin transformer should be implemented.

Minute of KAGRA commissioning meeting


  • Date: 2018/3/20 11AM~12PM
  • Attendance: Miyakawa, Aso, Yokozawa, Izumi, Akutsu
    • eZuce: Ushiba, Suzuki, Tomaru, Inoue, Shoda


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

  • Alignment, ETMY: Izumi
    • Tuning of ETMY is still going on. Currently RMS is ~10urad.
      • ETMY yaw motion is still large.
      • Length, Yaw, Translation (diagonal of L) of BF dampings are not easy.
      • Only Yaw seems to be damped, but combination of them is not going well.
    • Beam will be checked every night, specially after pump down yesterday.
      • IMMT1,2 shifted in pitch by ~200urad, in yaw by ~100urad.
  • MIF: Izumi
    • LSC full model has been implemented in k1imc0.
    • CAL model is being tested on k1imc0.
      • Cal line will be produced in CAL model.
      • Invisible calibration line will be implemented in LSC model.
    • k1bs, k1imc will be connected by Dolphin. ETMs are connected to k1imc by RFM.
  • CAL: Yamamoto, Yokozawa
    • Started using IMC as training of calibration.
      • Simple calibration will be implemented.
    • X end PD will be removed and Baffle PD will be located instead. Changing PD will be done in the week of 3/26.
      • BURNDY to D-SUB9pin transformer should be implemented.
  • Cryo:
    • Current temperature is 18K.

2. Schedule of ETMX installtion

  • See the schedule at the commissioning top page.

3. Tasks or discussions

  • CAL model location? at the same k1imc, or k1test with Dolphin connection.
  • Selection of storing DAQ channel -> DGS, before phase 1

    • Check the total amount.
  • Screens at control room -> who, when?

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

4. Phase2

Others

  • Frequency noise can be measured by middle lock. Large intensity noise can be a problem.
  • Next meeting: 3/27

KAGRA/Commissioning/Weekly/20180320/Minute (last edited 2018-03-20 11:55:44 by OsamuMiyakawa)