== 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 10/20-11/8 (to be determined)

=== Minutes ===
 * Rick's visit of Kashiwa (8/31-9/15) and Kamioka (9/9-10) - 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 [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5702|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 ? [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4237|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 [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5704|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 [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5703|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 [[http://klog.icrr.u-tokyo.ac.jp/osl/index.php?r=1767|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