<> = Agenda/Minutes = [[https://zoom.us/j/203743987|Zoom Meeting]] ---------- = CRY+VIS Interface Meeting = Date: 2021/8/13 13:00-13:50 Participants: Takahashi, Ushiba, Aso, Kimura [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Upgrades/PostO3Upgrades|Post O3 Upgrade portal]] == Schedule == * IX: In finalization. The beam was higher than the present setting of the mirror height by 6mm. Installation of the ACCs is scheduled on 8/16-17. * EX: In finalization. Calibration of MN Oplev remains. * IY: Height adjustment will be scheduled after vacation. * EY: Preparation for the payload with the mirror is on going. Installation into the cryostat is scheduled on 8/20. Chamber closing will be rescheduled. == Status == * External review: on 8/19. * TM height setting: ITMY. * Commissioning in air: on going in X-arm. Oplev calibration was done on 8/9-11. * Commissioning in vacuum: * Overall commissioning: * Acceptance check: Every Friday. * PF actuator: At the in-vacuum commissioning. * New vacuum pumps for V-chambers: == Discussion == ---------- = VIS Meeting = 14:00-14:15 Participants: Takahashi, Fabian, Terrence, Aso, Tanaka, Ishizaki == Klog == This is generated by python script in /users/Miyo/dropbox/Script/scrapping/main.py. == Summary Report == === Type-A === === Type-B === * SR2 mid-size baffles: Hirata-san and Yano-san successfully did a trial installation, including the balancing of the suspended lower breadboard. * SR3 oplev: * I recovered suspension and oplev alignment: all stages were set close to their setpoints and the beam went through the center of the lens. * I set the lens in the optimum position with respect to the lens using a quantitative method. * I calibrated the QPD output in terms of displacement. * SR3 control: Terrence is working on it. Rough plan and schedule [[https://docs.google.com/document/d/1AOe0awHAD3Gz2T8EhAVgpbi_LX2mqHE2qWEEPv2PSyE/edit?usp=sharing | here]] * Calibration factors and sensing matrices of the optical lever were implemented. * I haven't diagonalize the oplev, but sanity checks show very little cross-couplings. Might do diagonalization today or tomorrow. * I measured all transfer functions and will do modeling soon. * After that I will construct all control filters for SR3 on the weekend. === Type-Bp === In PR2, After a lot of preparation, they installed the mid-size baffles. The green laser passes through without problems. === Type-C === === Electronics === === Control === == Schedule == See [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/Schedule|Schedule]] * Type-A team: ACC installation in IX, Connection of cryo-payload in EY * 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 8/16 * Takahashi: 8/16-20 * Sato: 8/16-20 The week from 8/23 * Takahashi: 8/23-25 == Next meeting == * 2021/8/20(FRI)