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Editor: OsamuMiyakawa
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Deletions are marked like this. Additions are marked like this.
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 * Attendance: Miyakawa, Uchiyama, Stefan, Mio, Yokozawa
  * eZuce: Izumi, Eleonora, Shoda, Mateo, Hirose, Ushiba, Enomoto		  * Attendance: Miyakawa, Uchiyama, Aso, Yamamoto, Yokozawa, Enomoto, Stefan
  * eZuce: Izumi, Nakano, Inoue, Yamamoto(Toyama), Suzuki, Miyoki, Ushiba, Eleonora, Shoda, Tegoshi
Line 8: Line 8:
== 0. Schedule ==

 * k1ix0 will be needed by September for NAB PD.
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 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8343|JGW-T1808343]]   * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8343|JGW-T1808343]]

 * Do we need WFS?(Eleonora) -> Yes, with control system.(Izumi)
 * Gouy phase measurement for green is also necessary. (Akutsu)
 * Both mirrors are at the room temperature. (Uchiyama)
 * Needs preparation list. (Aso)
 * Loss measurement will performed mainly reflection light. (Izumi)
 * Simulation of loss? (Eleonora) -> Hirose, Hiro Yamamoto
 * Camera view? (Stefan) -> PCal camera, transmitted camera
 * Which port will be used for locking? (Miyakawa) -> REFL port
Line 15: Line 28:
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5055]]
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5124]]
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5126]]		   * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5055]]
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5124]]
   * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5126]]

  * Non-stational noise happens but it is not related water cooler.
  * This RIN level cannot reach shotnoise level with the first ISS loop. Current noise is 2 orders lager than NPRO noise. Needs 2nd loop to reach design level.
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 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5155]]   * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5155]]

 * MATSUSADA HV driver has 10uV/rHz, quite high.
 * Slow output can be used as offset, and 2nd EXC point will be used as input.
 * LIGO is not using temperature controller. (Stefan)

Minute of KAGRA commissioning meeting

  • Date: 2018/6/5 11AM~12PM
  • Attendance: Miyakawa, Uchiyama, Aso, Yamamoto, Yokozawa, Enomoto, Stefan
    • eZuce: Izumi, Nakano, Inoue, Yamamoto(Toyama), Suzuki, Miyoki, Ushiba, Eleonora, Shoda, Tegoshi

0. Schedule

  • k1ix0 will be needed by September for NAB PD.

1. X arm commissioning

  • Do we need WFS?(Eleonora) -> Yes, with control system.(Izumi)

  • Gouy phase measurement for green is also necessary. (Akutsu)
  • Both mirrors are at the room temperature. (Uchiyama)
  • Needs preparation list. (Aso)
  • Loss measurement will performed mainly reflection light. (Izumi)

  • Simulation of loss? (Eleonora) -> Hirose, Hiro Yamamoto

  • Camera view? (Stefan) -> PCal camera, transmitted camera

  • Which port will be used for locking? (Miyakawa) -> REFL port

2. New 40 W laser

3. PMC electronic hack

  • MATSUSADA HV driver has 10uV/rHz, quite high.
  • Slow output can be used as offset, and 2nd EXC point will be used as input.
  • LIGO is not using temperature controller. (Stefan)

Others

  • Next meeting: 5/29.

KAGRA/Commissioning/Weekly/20180605/Minute (last edited 2018-06-05 12:04:48 by OsamuMiyakawa)