• KAGRA
• Subgroups
• CAL
• CAL_Meeting
• 20180225

2019/02/25 18:30

Agenda

• Schedule: Yuki
• Realtime model for DRMI commissioning: Yamammmoto
• Pcal finalization (Y-end result): Yuki
• Progress of measurement for DARM model: Cory

• CAL-Git: Wu-Cheng slide

Realtime model for DRMI commissioning

• Requests from commissioning team
  • Calibrated signals of MICH, PRCL, and SRCL.
  • 10-20% error for each DOF
  • ASAP after DRMI will be locked.
• Current status of RT model.
  • Filter processes of MICH, PRCL, and SRCL are constructed.

    • dL = C^-1 * v_e + (A_TM + A_IM) * v_c

    variable	channel name
    dL	K1:CAL-CS_PROC_$(DOF)_DISPLACEMENT
    C-1 * ve	K1:CAL-CS_PROC_$(DOF)_RESIDULA
    (ATM + AIM) * vc	K1:CAL-CS_PROC_$(DOF)_DELTA_CTRL
    ve	K1:CAL-CS_PROC_$(DOF)_ERR
    vc	K1:CAL-CS_PROC_$(DOF)_CTRL

  • Channels are not registered to DAQ yet.
  • There are no CAL line to PRM and SRM.

    • Is there any plan of low-latency/offline reconstruction? -> Darkhan and Sawada-san.

  • Gain drifts by time are not taken into account.
• What we need.
  • Optical gain (and cav. pole of PRC and SRC).
  • Actuator efficiencies of TM and IM of BS, PRM, and SRM.

    • Maybe the approximations as f^-2 and f^-4 are enough for 10-20% error.