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Editor: OsamuMiyakawa
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  * eZuce: Izumi, Inoue, Yamamoto(Toyama), Suzuki, Miyoki, Yokozawa, Ohashi, Izumi, Nakano, Stefan   * eZuce: Izumi, Inoue, Yamamoto(Toyama), Suzuki, Miyoki, Yokozawa, Ohashi, Izumi, Stefan
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 * [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0083/G1808352/001/G1808352_v1.pdf]]
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== MC realignment ==
 * MC will be re-aligned today.
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== MC realignment ==
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 * BO card was broken and it was replaced.
 * BO check card is still connected between BO card and circuit to break ground loop.
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 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5227]]
 * Trying to implement an offset using slow output into EXC.
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== 1. X arm commissioning ==
  * [[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


== 2. New 40 W laser ==
 * RIN measurement
   * [[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.


 * Beam profile
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5068]]
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5084]] - OSA measurement
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5139]]

== 3. PMC electronic hack ==
  * [[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)
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 * Next meeting: 5/29.  * Next meeting: 6/19.

Minute of KAGRA commissioning meeting

  • Date: 2018/6/12 11AM~12PM
  • Attendance: Miyakawa, Aso, Yamamoto, Tomura, Enomoto
    • eZuce: Izumi, Inoue, Yamamoto(Toyama), Suzuki, Miyoki, Yokozawa, Ohashi, Izumi, Stefan

0. Schedule

  • k1ix0 will be needed by September for NAB PD.

ETMX status

  • http://klog.icrr.u-tokyo.ac.jp/osl/?r=5224

    • ring on f0 got lower and on the f1 by a few mm.
    • f0 TF had no response. Line to coil was cut. It had been repaired before and it was used again.
    • It will be fixed around September as 1week work. Whole coil will be replaced.

X arm commissioning/preparation

  • WFS target: 10nrad.

Satellite box modification

MC realignment

  • MC will be re-aligned today.

FSS BO

  • BO card was broken and it was replaced.
  • BO check card is still connected between BO card and circuit to break ground loop.

PMC installation, circuits, adding offset

IOO schedule

Others

  • Next meeting: 6/19.

KAGRA/Commissioning/Weekly/20180612/Minute (last edited 2018-06-12 11:43:39 by OsamuMiyakawa)