= Minute of KAGRA commissioning meeting = ---- * Date: 2018/7/17 11AM~12PM * Attendance: Miyakawa, Miyamoto, Aso, Nakano, Yokozawa * eZuce: Shoda, Izumi, Ushiba ----- == Clipping loss (Izumi) == * 20mm misalignment is acceptable for beam cetering. * 40mm misalignment is acceptable for WAB cetering. * Could be factor of 2 different in loss. == ETMX (Miyamoto) == * Side of screw of frame was almost touching in the room temperature and after starting cooling it was actually touching. * Then it was found that F2 was almost dead. Even VIS team pulled wire but LVDT did not work. * Then pump down started without F2 fix. * New measurement shows it seems to be OK except for 2.4Hz peak probably due to the dead of F2. * Cooling started the last Friday. * Heat link does not affect so much. == LAS == * Fiber was broken just before moving the laser to Kamioka. * We have 1 + 1spare = 2. * Low power below 15A has many peaks. * Low frequency RIN is proportional to the power. * Movement to Kamioka will be the 24th of July. == PSL == * PMC and iMC layout including MZ is being changed. == rack cleaning == * Cable cleaning on BS rack is being continued. * pile of AA or HPCD can be hot. == Others == * Next meeting: 7/24.