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   * GigE camera could also monitor the mirror position ?    * GigE camera could also monitor the mirror position ? [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4237|E1504237]]
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 * Type-A simulation - Miyamoto and Inoue  * Type-A simulation [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5703|G1605703]] - Miyamoto and Inoue

CAL Meeting on 2016/9/28 15:00 - 16:40

Participants: Kanda, Yamamoto, Kokeyama, Suzuki, Tomaru, Inoue, Ushiba, Miyamoto(CRYp), Haino

  • Next meeting will be around in 10/20-11/8 (to be determined)

Minutes

  • Rick's visit of Kashiwa and Kamioka (Sep./9-10) - Inoue
    • Visited of X-end
    • Discussed on -
      • Periscope design (EXA chamber)
      • Power standard (Tomaru-san)
      • Camera

      • Elastic deformation (LIGO -> KAGRA)

      • LIGO Pcal+alpha

  • Pcal design G1605702 - Inoue

    • Optimization of beam positions
      • To be discussed if we really need two beams
    • Beam monitoring (view camera)
      • Collaboration work with AOS
      • For the first step, independent system with slow (manual) taking
      • How to monitor the mirror edges ? and how to determine absolute position ?

      • GigE camera could also monitor the mirror position ? E1504237

    • Periscope
    • Transmitter module
      • We will need a beam shutter in order to avoid exciting high frequency resonance before the Optical follower locks
    • Schedule

  • Power standard G1605704 - Tomaru

    • Inter-institute comparison is not done so often (only every ~10 years) and discrepancy of ~1%
    • Firstly share the same standard between LIGO and KAGRA and then investigate more on the systematics later
    • Discussions from theory/analysis side are needed for the impact and requirement on the absolute amplitude

  • Type-A simulation G1605703 - Miyamoto and Inoue

    • Suspension transfer function - SUMCOM
      • Cross-check between Minamoto-San and Okutomi-san
    • Actuator noise budget estimation - MATLAB
    • Time schedule - mid.Oct.
      • For CAL check the transfer function with the control chain

  • iKAGRA post-run calibration KAGRA logbook 2016/9/6 - Yamamoto

    • We need to transfer back data from Kashiwa to Kamioka to put in DGS
    • All the necessary transfer functions should be exported from DGS to frame file for the offline calibration
  • Up-coming activities
    • Haino : 10/3 - 10/11 visit EGO/Virgo (learn commissioning and Virgo week in 10/10)
    • Haino : Oct.-Nov. visit Annecy to discuss about Virgo Pcal
    • Inoue : 10/21 - 11/10 LHO (Camera and Pcal discussion with Rick)
    • 2017/1/15 - 1/16 : Kajita-san comes to Taiwan for Physical Society meeting
    • 2017/1/15 - 1/22 : Rick comes to Taiwan for Physical Society meeting
      • Calibration meeting in Taiwan-Japan with Rick in this period ?
  • AOB
    • In the chief meeting on 10/11, Inoue will briefly mention about Pcal idea
    • CAL meeting will be held every ~1 month with dates to be determined flexibly

KAGRA/Subgroups/CAL/Meeting/160928 (last edited 2016-09-28 17:48:29 by SadakazuHaino)