<> = Agenda/Minutes = [[https://zoom.us/j/203743987|Zoom Meeting]] ---------- = CRY+VIS Interface Meeting = Date: 2021/5/28 13:00-14:05 Participants: Takahashi, Node, Tomaru, Ushiba, Ikeda, Miyo, Yokozawa, Sato, Kimura, Aso [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Upgrades/PostO3Upgrades|Post O3 Upgrade portal]] == Schedule == * IX: Setup of Geophones/ACCs are on going. H4 geophone should be replaced. It is difficult to calibrate the Oplev opning the chamber. * IY: GAS blades of F0 were replaced. Installation of the cryo-payload is scheduled on 5/31-6/1. * EX: Additional FR was modified. New collimator for Oplev was delivered. * EY: Installation of tower is in the pre-isolator stage. Mirror was taken out. Pure water generator will be delivered on 6/1. Handling jig is under manufacturing. == Status == * Corrugate tube fixing jig: Other 3 sets will be ready by the end of June. * TM height setting: Confirmed the height of EQ stop using the height standard near the cross tube in IX. * Commissioning in air: Started on the pre-isolator in IX. * Commissioning in vacuum: * Overall commissioning: * Acceptance check: Group work is set every Friday to make the acceptance check document. * PF actuator: After SC. * Jig for FC painting: == Discussion == ---------- = VIS Meeting = 14:05-14:40 Participants: Takahashi, Aso, Fabian, Hirata, Ishizaki, Miyo, Tanaka, Sato, Sugiyama, Terrence, Washimi == Schedule == See [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/Schedule|Schedule]] * Type-A team: IYV 5/31, EYV 6/21-4 * Type-B team: SR '''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 == Klog == '''EX''' * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16535|16535]] Height adjustment of ETMX , __ryutaro.takahashi__ '''General''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16506|16506]] Deleted unnecessary processes from VIS model file. , __satoru.ikeda__ '''IX''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16421|16421]] Height adjustment of ITMX , __ryutaro.takahashi__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16499|16499]] Comment , __ryutaro.takahashi__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16519|16519]] Comment , __ryutaro.takahashi__ '''MCE''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16512|16512]] MCe oplev characterization , __takaaki.yokozawa__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16525|16525]] Comment , __takaaki.yokozawa__ * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16522|16522]] Comment , __tomotada.akutsu__ '''MCF''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16498|16498]] Type-C simulation model , __yoichi.aso__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16501|16501]] Oplev calibration MCo , __takaaki.yokozawa__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16500|16500]] Characterization of optical lever MCi , __takaaki.yokozawa__ * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16537|16537]] MCo suspension strange , __tomotada.akutsu__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16157|16157]] Investigation of IMC suspensions , __ryutaro.takahashi__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16513|16513]] Comment , __kouseki.miyo__ '''PR3''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16520|16520]] Thermistor installation , __fabian.arellano__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16521|16521]] Setting the mirror to nominal height , __fabian.arellano__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16348|16348]] Tightening the locating clamps for the piano wire. , __fabian.arellano__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16502|16502]] Comment , __fabian.arellano__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16520|16520]] Thermistor installation , __fabian.arellano__ * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16533|16533]] Comment , __fabian.arellano__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16521|16521]] Setting the mirror to nominal height , __fabian.arellano__ * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16532|16532]] Comment , __shinji.miyoki__ * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16529|16529]] Comment , __fabian.arellano__ '''PRM''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16518|16518]] PRM BF-LVDT replacement , __yoichi.aso__ * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16534|16534]] Comment , __yoichi.aso__ '''SR2''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16509|16509]] Lowering the pre-isolator , __fabian.arellano__ This is generated by python script in /users/Miyo/dropbox/Script/scrapping/main.py. == Summary Report == === Type-A === * Setup of the pre-isolator and the BF damper is on going in EY. * Replaced the GAS blades for F0 in IY. * Tuned the ACCs for IX. * Replaced the additional FR in EX. === Type-B === === BS === * Top Filter fishing rod adjustment. * We set up the software and hardware limit swtiches of the FR such that the moving range is [-75,200 ; 2,052,035] steps, producing an ''approximate'' displacement range of the keystone of [-1.6 , 2.1] mm. * Top filter ballast mass. * We set the FR to the mid-point. * Then we added 43.7 grams of ballast to leave the keystone very close to 1,252 um, which is the buoyancy corrections value. We did this while having the IP free. * The tempertature was a bit low, but this is not expetected to create problems: T=22.8 °C. * While doing this work we realized the IP locking mechanism produces deformation of the the IP table, creating a change in the F0 LVDT readout of up to 0.9 mm when tightened strongly! Of course, we don't need to lock the IP that strongly. * IP ballast mass addition. * We added 8.9 kg: 2 × 10 mm × 120° arch weights, one 4.5 kg and and another one 4.4 kg. * The resonant frequencies of the IP are * '''IP-L: 66 mHz''' * '''IP-T: 66 mHz''' * '''IP-Y: 129 mHz''' * Temperature: 22.7 °C. * We need to check by how much they change when the temperature increases (O3GK = 23 °C, maximum lately: 23.8°C). * We measured IP and IM transfer functions. * They look fine but some of them have low coherence in narrow bands or look less smooth than expected. * Next week I would like to double-check the IP LVDT cabling in case there's anything strange. * Thermistor. * We installed the thermistor. * After today's morning meeting, Hirata-san connected the cables differently: two cables had been originally connected to the same terminal, he removed one of them and it worked. * Hirata-san and Ikeda-san tested it with the controller and compared its readout with that of a thermocouple and PEM's ondotori.The result was satisfactory. * However, when the in-vacuum cable is touched, the readout changes a lot, so we need to change the cable. === Type-Bp === * Hirata-san and Ikeda-san tested the thermistor in all PR suspensions. Besides the systematic error already mentioned above, the test was succesful. * Hiarata-san has been measuring parameteres for the acceptance check. === TypeC === * Allocation of the IMMT1/2 is planed in the next week. === Electronics === === Control === == Safety == == Discussion == == Travel Plans == The week from 5/31 * Takahashi: 5/31-6/4 * Sato: 5/31-6/4 * Hirata: 5/31-6/4 * Yano: 5/31-6/4 The week from 6/7 * Takahashi: 6/7-11 * Sato: 6/7-11 * Hirata: 6/7-11 * Yano: 6/7-11 == Next meeting == * 2021/6/4(FRI)