ISC Meeting on 2017/6/19 14:00 - 15:00

Participants: (eZuce meeting)

Next meeting

2017/7/3 14:00 - 15:00

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Agenda

• PSL EOM Layout re-consideration [Enomoto] (JGW-T1706748)

  • Delay-line length decided to be 2.66 m (instead of 8.88 m)
  • Modulation phase between f1 AM and PM is always aligned (we need this to be aligned)

  • Modulation index needed at each EOM is less than measured maximum index by Uehera (JGW-T1605611)

  • Optickle simulation by Kohei Yamamoto
    • simulation on imperfections (MZ arm asymmetry, MZ lock, EOM phase difference control etc.)
    • start with hand calculation, simple setups, and then to full IFO simulation
    • meeting with him on June 6.
  • Requirement on carrier power loss?
• OFI and OMC status? [Somiya]
  • look for OFI with larger aperture [Somiya]
  • output optics task sharing status?
  • OMC baseplate issue?
  • design review on June 26

• Actuator noise modeling [Michimura,Miyamoto] (JGW-T1503453)

  • Updated magnet size for cryopayload marionette (ActuatorDesign wiki)

  • Needs to implement frequency noise, but FSS modeling with ALS is complicated [student!]

  • Needs to update lock acquisition section (see ISC Meeting minutes 20170410) [Michimura]

• bKAGRA Phase 1 initial alignment / commissioning plan [Michimura]: JGW-T1605692

  • updated based on current schedule
    • ETMX and ETMY cryopayload installation almost at the same time
    • MICH lock at room temperature before cooling down (instead of cooling down ETMY first)
    • AS cannot be used for room temperature MICH lock (SR3 not ready)
    • SR2 won't be ready by the end of March 2018

See this page for other agendas.