<> = Agenda/Minutes = [[https://zoom.us/j/203743987|Zoom Meeting]] ---------- = CRY+VIS Interface Meeting = Date: 2023/6/9 13:00-13:15 Participants: Takahashi, Mitsuhashi, Uchiyama, Ushiba, Ikeda, Miyoki, Hirata, Yokozawa, Kimura, Tomaru, Akutsu [[https://paper.dropbox.com/folder/show/AcceptanceTest-e.1gg8YzoPEhbTkrhvQwJ2zzo3dHVh5sJGieDgbm2n3h60mGqotBeE|Acceptance check document]] == Suspensions == * Type-A: Try of the tidal control in EX. * Type-B: * Type-Bp: * Type-C: Change of the watchdog threshold to 5000 in OMMT1, OMMT2, and OSTM == Other items == * Oplev: * ACC: * Commissioning: * Vacuum system: Planning the replacements of the TMP in SR2 and the HV connector for ISP in IXA. * Heater control: * TMS: == Post O4a == * Measurements of the DAC noise. * Measurements on the sensor correction in SR2. * Optimization of the damping control in PRs. * IP control with the ACCs. * In-vacuum accelerometer for IOO: PEM started the examination. * Hight adjustments of Type-A in the cooling. * Measurement of the drum-head modes. * Check of the length Oplev. * Check of the sensor noise in the cryo-payloads. * Temperature control for the Oplev: Preparing for the heater controller. * Check of the space in the IMMT chamber. == Discussion == ---------- = VIS Meeting = Date: 2023/6/9 10:00-11:00 Participants: Takahashi, Ushiba, Aso, Hirata == Summary Report == === Type-A === === Type-B === === Type-Bp === === Type-C === === Electronics === === Control === === R&D === == Schedule == * O4a until 6/21. == Safety == == Discussion == * Towards O5 * 30mHz IP for Type-A (Remote stopper): What is merit? Simulation is necessary. * Remote adjuster of F1 damper for Type-A/B: Height adjustment at BF is more important. * H4 geophone for Type-B * Accelerometer for Type-B: Manufacturing is ongoing in ATC. * BF damper for Type-B: Design to avoid reinstallation of the tower. * Wide range OSEM for Type-B/Bp: Priority is not high. * Improvement of the Type-C suspension: 1-3Hz vibration made a jump in pitch. KFC suspension with size variation can be available. * In-vacuum camera * Damping of Type-Bp suspension: Test after O4a. * Active isolation table for IOO beyond O5 == Next meeting == * 2023/6/23 10:00-