<<TableOfContents(3)>> = Agenda/Minutes = [[https://zoom.us/j/203743987|Zoom Meeting]] ---------- = CRY+VIS Interface Meeting = Date: 2021/5/14 13:00-13:55 Participants: Takahashi, Miyo, Node, Aso, Ushiba, Sato, Tomaru, Hirata, Ikeda, Kimura [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Upgrades/PostO3Upgrades|Post O3 Upgrade portal]] == Schedule == * IX: IP was released on 5/10. Adjustment of Yaw FR is scheduled on 5/17. * IY: Remedy of the pre-isolator is postponed. * EX: Height adjustment was finished ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16535|Status]]). * EY: Installation of the tower was restarted on 5/11. The maraging rod was removed. Items (pure water maker, etc.) for the mirror cleaning are under preparation. == Status == * Corrugate tube fixing jig: Other 3 sets will be ready by the end of June. * TM height setting: Final setting of height in EX was on 5/13. Angle adjustment in EX was scheduled on 5/13. * Commissioning in air: Started on the pre-isolator in IX. * Commissioning in vacuum: * Overall commissioning: Operators are necessary. * Acceptance check: Group work is set every Friday to make the acceptance check document. * PF actuator: After SC. * Jig for FC painting: Test is scheduled in the week of 5/17. Minimum target is to learn the procedure with the jig. == Discussion == ---------- = VIS Meeting = 14:00-14:40 Participants: Takahashi, Hirata, Miyo, Sato, Sugiyama, Fabian, Ishizaki, Tanaka, Aso == Schedule == See [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/Schedule|Schedule]] * Type-A team: IXV 5/17, EYV 5/18-21 * Type-B team: FC painting test 5/17-19, MSB? '''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 === === TypeB === === Type-Bp === ==== PR2 ==== As people may remember we had to move the SD keystone very high in order to have the mirror at the appropriate height: * At such position the TF had a smaller amplitude. See klog. * At the LVDT card we checked the return signal from the LVDT and it was clipping due to saturation. See example in klog. * We reduced the gain until we achieved a suitble sinusoidal signal and adjusted the phase to -180 degrees (not zero due to the height of the keystone). * Then we calibrated the OSEMs. * The responsivity is not as good as in other LVDTs becuase we require a large measuring range. The suitable position of the keystone is 5.3 mm above the zero of the LVDT, so it likely has a range of about 10 mm. * The transfer function shows a healthy system. * I still have to take note of the resistance values of the SF LVDT card channel. ==== PR3 ==== * We adjusted the pitch of the mirror * First we measured IM TFs and saw that the IN wasn't touching the IRM. * Then we measured the mirror pitch to be -1.4 mrad, not far away from the target of -3.3 mrad. * The back side is not accesible for the laser level so se used the front side. * ROC: 458 m * We set the laser level at the vertical midpoint of the mirror in order to minimize the systematic error introduced by the curvature. * Using the picomotor we moved the pitch to the target value of -3.3 mrad * Then we adjusted the positions of H2, H3 and V1 OSEMs. Yet to do in PRM * We need to measure IM TFs * We realized we might have mistake in setting the height. We need to double check. * We need to double check that the H3 OSEM screws are tightened enough. * We require one more day. === TypeC === === Electronics === === Control === == Safety == == Discussion == == Travel Plans == The week from 5/17 * Takahashi: 5/17-21 * Sato: 5/17-21 * Hirata: 5/17-21 * Yano: 5/17-21 * Aso: 5/17-20 The week from 5/24 * Takahashi: 5/24-28 * Sato: 5/24-28 * Hirata: 5/24-28 * Yano: 5/24-28 == Next meeting == * 2021/5/21(FRI)