<> = Agenda/Minutes = [[https://zoom.us/j/203743987|Zoom Meeting]] ---------- = CRY+VIS Interface Meeting = Date: 2021/9/3 13:00-13:50 Participants: Takahashi, Ikeda, Yasui, Hirata, Aso, Sato, Ushiba, Kimura, Yokozawa, Akutsu [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Upgrades/PostO3Upgrades|Post O3 Upgrade portal]] == Schedule == * IX: In finalization. Health check. * EX: In finalization. Health check. Installation of ACCs will be scheduled after the health check. * IY: TM height was adjusted/measured on 9/1. * EY: Weight and Yaw were adjusted on 9/2. Chamber closing is scheduled on 9/6-8. == Status == * TM height setting: Height of ITMY/ETMY was measured. * Commissioning in air: Health check. Oplev setting. * Commissioning in vacuum: * Overall commissioning: * Acceptance check: Every Friday. * PF actuator: At the in-vacuum commissioning. * New vacuum pumps for V-chambers: * Heater control: Consider the protection for water drop. == Discussion == ---------- = VIS Meeting = Date: 2021/9/3 14:00-14:20 Participants: Takahashi, Sato, Ushiba, Yokozawa, Fabian, Sugiyama, Aso, Ishizaki, Tanaka, Terrence == Summary Report == === Type-A === * Adjusted the height of GAS filters and measured the height of TMs in IY and EY. === Type-B === * Satou-san warned us that the geophone cables requires special attention. The cable shield (connected to pin 5) should not touch anything metallic. * It seems the solution provided my Mark in the past was better. We should look more into it. === Type-Bp === We assessed the health of the in-vacuum cables by measuring resistances, capacitances and inductances from the outside of the chamber at the flanges. * PR2: * The only anomaly was that '''we found a 8.05 MΩ path between pin 2 and the chamber in the BF picomotor connector''' (Flange 4, connector 3). We never use these picomotors, so this problem should not have important consequences. * We still have to measure some inductances. * PR3: * '''In the BF picomotor connector, it's not possible measure the correct capacitance between pins 1 and 6, which should be around 190 nF. This is not expected to be a problem because we tend to nerver use those picomotors.''' * This situation is strage because Ikeda-san used these picomotors many months ago. * PRM will be next. === Type-C === === Electronics === === Control === == Schedule == See [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/Schedule|Schedule]] * Type-A team: Preparation for accelerometers. * Type-B team: '''Milestone''' * ''IMC suspensions are ready in air [40]'' will finish 2021/04/21. * ''PRs are ready in air [643]'' will finish 2021/07/09. * ''ETMX is ready in air [656]'' will finish 2021/08/25. * ''ITMX is ready in air [657]'' will finish 2021/08/31. * ''ETMY is ready in air [658]'' will finish 2021/09/16. * ''ITMY is ready in air [659]'' will finish 2021/11/08. * ''BS is ready in air [691]'' will finish 2021/11/24. * ''SRs are ready in air [663]'' will finish 2021/12/20. * ''Output suspensions are ready in air [695]'' will finish 2021/12/21. * ''TMSY is ready in air [708]'' will finish 2021/??/??. * ''TMSX is ready in air [684]'' will finish 2021/??/??. 2021/03/29 updated == Safety == == Discussion == == Travel Plans == The week from 9/6 * Takahashi: 9/6-10 * Sato: 9/6-10 * Hirata: 9/6-9 * Yano: 9/6-10 The week from 9/13 == Next meeting == * 2021/9/10(FRI)