ALS Meeting on 2016/7/28 15:00 - 16:00

eZuce: http://srn.ezuce.com/joinSRN?meeting=M2MvMB292lD2DD9D9sDM92

Participants: Michimura, Aso, Enomoto, Nakano, Matsushima, Kambara, Doi, Moriwaki

Minutes

• Default configuration for ALS is Tasumi/Arai/Aso configuration (see JGW-T1605353)

  • We may have to put wideband EOM for IR beat to increase UGF and DC gain for PLL
  • We may have to use CARM/DARM basis instead of XARM/YARM basis

  • NoiseBudget modeling needs to be done soon [Kambara]

    • Kambara will stay at Hongo for ~1week in August for a boot camp

    • Start with a simpler model (e.g. just PLL only)
• Prometheus lasers will be put on PSL table to keep them clean

  • PSL layout and space should to be checked [Nakano]

  • EOM layout is Layout 3 in JGW-D1503189, so we can save space

Agenda

• Decide default configuration for ALS JGW-T1605353

  • Four candidates: aLIGO-like, simplified aLIGO, Tatsumi/Arai/Aso, or hybrid?
  • Noise study will be done by Kambara after deciding the default configuration to start with
• Where to put Prometheus?
• Schedule?
  • Possibility of installing GreenY earlier for TMS alignment?
    • BS green reflectivity 99.40% for s-pol, 97.85% for p-pol

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