<> = Agenda/Minutes = [[https://zoom.us/j/203743987|Zoom Meeting]] ---------- = CRY+VIS Interface Meeting = Date: 2022/7/15 13:00-13:40 Participants: Takahashi, Kimura, Akutsu, Yokozawa, Uchiyama, Yasui, Sato, Ushiba, Miyoki, Aso, Hirata [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Upgrades/PostO3Upgrades|Post O3 Upgrade portal]] == Schedule == * IX: Offload of GAS filters. * EX: Performance check at 80K. * IY: Health check and recovery. * EY: Health check and recovery. Installation of the MNV oplev. * Type-B: Health check. * Type-Bp: Investigation of the previous data on PR2. Calibration factor of BFH in PRM. * Type-C: Health check of the IMMT1/2. == Status == * Replacement of cables: EXT and BF temp. * TM height setting: * Oplev: Investigation of the glitches. * ACC: * Commissioning in air: * Commissioning in vacuum: Try to see DRAM signals. * Acceptance check: Type-Bp. * New vacuum pumps: Installation of the ion pumps in IX/IY is scheduled on 8/4,5. * Heater control: Pending. * TMS: == Discussion == ---------- = VIS Meeting = Date: 2022/7/15 14:00-14:30 Participants: Takahashi, Uchiyama, Fabian, Tanaka, Ushiba, Washimi == Summary Report == === Type-A === * Health check. Recovered the F2 in IY and the F1 in EY. * Offloaded the GAS filters in IX. === Type-B === * Ushiba-san plotted most of Type-B transfer functions in a way suitable for comparison. After remeasurig a few of them, I have the impression that the suspensions are healthy, although it seems there's still an unknown: in BS IM-R and IM-P see to have additional peaks in in SRs. I need to check in more detail. * We measured TFs at the individual coils and plotted them in a suitable way for comparison. I should double-check, but a cursory comparison suggessts they are all fine. No klog yet. * We checked the polarities of all the coil-magnet actuators in the four suspensions and everything seems consistent with what we know. No klog yet. === Type-Bp === * On request from Takahashi-san: the oldest PR2 TF measurements I was able to find were from 26th of July 2019. === Type-C === === Electronics === === Control === == Schedule == * Type-A: * Type-B: Health check. * Type-Bp: Calibration of SF in PR2. * Type-C: Health check of IMMT1/2. == Safety == == Discussion == == Travel Plans == (Date in Kamioka) The week from 7/19 * Sato: 7/19-22 * Hirata: 7/19-22 The week from 7/25 * Takahashi: * Sato: 7/26-29 * Hirata: 7/26-29 == Next meeting == * 2022/7/22(FRI)