= Minute of KAGRA commissioning meeting = ---- * Date: 2019/4/23 11:00AM~11:40AM * Attendance: Miyakawa, Kozakai, Terrence, Lucia, Okutomi, Yamamoto, Yamada, Enomoto, Aso, Washima, Yokozawa * Zoom: Shoda, Takahashi, Izumi, Sawada ----- === Summary of this week === * Y arm was locked with IR by frequency feedback. * The frequency fluctuation of IR was too much for the mass lock, so IR frequency should be stabilized by X arm. * X arm and Y arm were aligned and resonate at at time. Beam position at ITMY was too high(1-2cm), and beam position at ITMX was too low(~1cm). === Discussion === * What is the configuration for FPMI? * Locked Fabry-Perot? * Engineering run should not fix the configuration to FPMI. Configuration should be flexible. We assume June run as proposed. ---- == Others == * Next meeting: 5/14.