<> = Agenda/Minutes = [[https://zoom.us/j/203743987|Zoom Meeting]] ---------- = CRY+VIS Interface Meeting = Date : 13:00-14:00 Participants: Takahashi, Ikeda, Aso, Uchiyama, Ushiba, Kimura, Sato, Tomaru [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Upgrades/PostO3Upgrades|Post O3 Upgrade portal]] == Schedule == * IX: Final setting of height was applied on 4/26. Oplev for angle has been adjusted. To adjust length, it is necessary to damp the filter chain. One ACC was tuned on 4/24. * IY: Remedy of the pre-isolator was postponed. * EX: Height adjustment is on going ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16613|Status]]). The measured height of ETMX (-19.5mm) is too low. It will be remeasured on 5/3. * EY: Installation of the tower will be restarted on 5/11. Removing of the maraging rod is necessary. == Status == * Corrugate tube fixing jig: Replaced for IXV on 4/28. * Commissioning in air: From mid. May for IX. * Commissioning in vacuum: * Acceptance check: Group work is set every Friday to make the acceptance check document. * PF actuator: After SC. * Jig for FC painting: * Overall commissioning: * Procedure of TM height setting: Plan for EX. * Box frame [[attachment:Box frame deformation.pdf]] == Discussion == ---------- = VIS Meeting = 14:00-14:30 Participants: Takahashi,Miyo,Terrence, Sugiyama, Fabian, Washimi, Sato, Aso == Schedule == See [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/Schedule|Schedule]] * Type-A team: IXV 5/10, EYV 5/11-13 * Type-B team: PRM '''Milestone''' * ''IMC suspensions are ready in air [40]'' will finish 2011/04/21. * ''PRs are ready in air [643]'' will finish 2011/07/09. * ''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 2011/11/24. * ''SRs are ready in air [663]'' will finish 2011/12/20. * ''Output suspensions are ready in air [695]'' will finish 2011/12/21. * ''TMSY is ready in air [708]'' will finish 2011/??/??. * ''TMSX is ready in air [684]'' will finish 2011/??/??. 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 == === TypeA === * Final setting of the height was applied in IX. * The height adjustment is on going in EX. === TypeB === === Type-Bp === ==== PR2 ==== On Monday: * We measured the size of the buoyancy effect using stored data of the LVDT and a varnier calliper: '''2.3 mm. It's too large to believe it.''' There must be something wrong in the measurement. * We moved the SF FR stepper motor physical stop screws up in order to increase the''' FR range: 5.54 mm'''. We also set new software limits. * We determined the '''height of the mirror to be -5 mm''' when having the * BF at the setpoint and * SF FR roughly at midrange. * The temperature was 23.9 degrees. * We installed the thermistor. On Tuesday * We set the SF keystone to nominal height, BF at the setpoint and the mirror was 6.5 mm below nominal height. * The security structure is 3 mm below its nominal. * The RM was 2.5 mm below nominal with respect to the security structure. * We can only survey the +X side of the RM becuase the markings were made on the wrong side of the chamber, so checking roll was important. * We also measured the position of the SF keystone when the LVDT readout was zero: 0.6 mm. * Temperature decreased to 23.4 degrees. On Wednesday * '''After checking roll, we corrected the height of the mirror to be 4.7 mm'''. * '''While keeping the BF at the setpoint we moved the SF FR up until the mirror was at the correct height.''' * We measured transfer functions for the BF and SF to check whether the resonance frequency had changed: it didn't. * The one for the BF was exactly the same as the reference. * The one for the SF showed a smaller amplitude. * The changed in amplitude is likely due to the SF LVDT being out of linear range. We will try to fix it by tuning the resistences in the LVDT card. ==== PRM ==== * Hirata-san and Tomaru-san made height markings for setting the mirror height. * Hirata-san and Ikeda-san checked that the traverser is working properly. === TypeC === === Electronics === === Control === == Safety == == Discussion == == Travel Plans == The week from 5/3 * Hirata: 5/6-9 The week from 5/10 * Takahashi: 5/10-14 * Sato: 5/10-14 * Hirata: 5/10-14 * Yano: 5/10-14 == Next meeting == * 2021/5/14(FRI)