Differences between revisions 1 and 5 (spanning 4 versions)
⇤ ← Revision 1 as of 2018-06-12 10:21:09 →
Size: 2072
Editor: OsamuMiyakawa
Comment:
← Revision 5 as of 2018-06-12 11:43:39 → ⇥
Size: 1301
Editor: OsamuMiyakawa
Comment:
Deletions are marked like this. Additions are marked like this.
Line 5: Line 5:
 * Attendance: Miyakawa, Uchiyama, Aso, Yamamoto, Yokozawa, Enomoto, Stefan
  * eZuce: Izumi, Nakano, Inoue, Yamamoto(Toyama), Suzuki, Miyoki, Ushiba, Eleonora, Shoda, Tegoshi		  * Attendance: Miyakawa, Aso, Yamamoto, Tomura, Enomoto
  * eZuce: Izumi, Inoue, Yamamoto(Toyama), Suzuki, Miyoki, Yokozawa, Ohashi, Izumi, Stefan
Line 13: Line 13:
== 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 ==
 * [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0083/G1808352/001/G1808352_v1.pdf]]
 * 100nF cap will be implemented to avoid an oscillation. It introduce 41Hz pole.
Line 14: Line 28:
 * MC will be re-aligned today.
Line 15: Line 31:
 * BO card was broken and it was replaced.
 * BO check card is still connected between BO card and circuit to break ground loop.
Line 16: Line 35:
== ETMX status==

== IOO schedule ==
== X arm commissioning/preparation ==



== 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)		  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5227]]
 * Trying to implement an offset using slow output into EXC.
Line 61: Line 41:
 * 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

Others

  • Next meeting: 6/19.

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