<> = Agenda/Minutes = [[https://zoom.us/j/203743987|Zoom Meeting]] ---------- = CRY+VIS Interface Meeting = Date : 13:30-14:15 Participants : Takahashi, Aso, Ikeda, Tomaru, Ushiba, Sato, Miyo [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Upgrades/PostO3Upgrades|Post O3 Upgrade portal]] == Schedule == * IX: Oplev will be finalized in April. ACC installation will be started in April. * IY: * EX: Oplev setting is on going. The payload has been released? * EY: Installation of the F1 stage was almost finished. Countermeasure for the contamination is scheduled on 4/5-6. Removing of the maraging rod is necessary. == Status == * Corrugate tube fixing jig: They will be prepared by the end of May. * Commissioning in air: From mid. May for IX. * Commissioning in vacuum: * Acceptance check: Check items for in-air commissioning should be confirmed on the payload. Present status of EYV was shown. * PF actuator: Not evaluated in IX, but after the commissioning for suspension. * Jig for FC painting: * Overall commissioning: Schedule meeting was held on 3/22. * Procedure of TM height setting: More information on the range and limit is necessary to decide procedure. Prepare for the measurement in the first in-vacuum commissioning in IX. == Discussion == ---------- = VIS Meeting = 14:15-15:00 Participants: Takahashi, Fabian, Aso, Hirata, Miyo, Ishizaki, Tanaka, Sato, Sugiyama == Schedule == [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/Schedule|Schedule]] * The next week * Type-A team: 3/30-31 ACC in IX. 4/1-2 F0 tuning in EX. * Type-B team: 3/29-4/2 Remedy in PR3. == Klog == '''EX''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16260|16260]] Connection of cryo-payload , __ryutaro.takahashi__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16271|16271]] Comment , __ryutaro.takahashi__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16275|16275]] Comment , __ryutaro.takahashi__ '''EY''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16276|16276]] Setup of F1 , __ryutaro.takahashi__ * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16288|16288]] Comment , __ryutaro.takahashi__ '''General''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16234|16234]] Common Type-C(MCI,MCE,MCO,IMMT1,IMMT2) model. , __satoru.ikeda__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16261|16261]] Comment , __satoru.ikeda__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16269|16269]] Comment , __satoru.ikeda__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16252|16252]] Common Type-C(OMMT1,OMMT2,OSTM) model. , __satoru.ikeda__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16262|16262]] Comment , __satoru.ikeda__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16268|16268]] Comment , __satoru.ikeda__ '''IX''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16185|16185]] Added MN/PF OpLev to k1visitmxp's Model file. , __satoru.ikeda__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16278|16278]] Comment , __satoru.ikeda__ '''IY''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16249|16249]] Connection of release sensors to DGS , __ryutaro.takahashi__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16091|16091]] Monitoring of IP by ITMY venting , __satoru.ikeda__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16248|16248]] Comment , __satoru.ikeda__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16249|16249]] Connection of release sensors to DGS , __ryutaro.takahashi__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16251|16251]] Comment , __naohisa.satou__ '''MCF''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16242|16242]] MCi and MCo oplev TX replacing , __tomotada.akutsu__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16279|16279]] IMC oplev characterization and MCe oplev TX replacing , __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=16286|16286]] Comment , __kouseki.miyo__ '''PR3''' * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16258|16258]] Setting the alignment of PR3. , __fabian.arellano__ * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16287|16287]] Comparison of PR3 and SR3 wire clamps. , __fabian.arellano__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16239|16239]] Test of PR3 mirror pitch stability using the Donald Trump method. , __fabian.arellano__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16247|16247]] Comment , __fabian.arellano__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16246|16246]] Comment , __fabian.arellano__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16272|16272]] Tightening of the wire clamp screws. , __fabian.arellano__ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16277|16277]] Comment , __fabian.arellano__ This is generated by python script in /users/Miyo/dropbox/Script/scrapping/main.py. == Summary Report == === TypeA === EY cabling * According to the continuity check at F1, disconnection of the LVDT (actuator coil) of BF was found, but we have not been able to determine where the break occurred. === TypeB === === TypeBp PR3 === This week we did two tasks, both related with PR3 clamps: * We measured the gaps in PR3 locating clamps for the 200 um piano wire and * We tested applying adhesive to the wires within the grooves in the locating clamps. * One magnet from the IM OSEM flags was chipped. We need to get another one. See [[https://photos.app.goo.gl/3cu5TECSb8hXkkW56|this picture]]. Size of gaps * We used thickness gauges. * We measured the gaps in different places to take into account that the gaps are not necessarily uniform. * The largest gap size was between 170 um and 180 um. * The lowest one was between 70 um and 80 um. * The tickness of the clamped wire is 200 um. Gluing test. * Using a spare SR style clamp we tested the procedure. Let's see klog [[https://klog.icrr.u-tokyo.ac.jp//?r=16331|16331]] and [[https://klog.icrr.u-tokyo.ac.jp//?r=16338|16338]] for details. * The test was successful in the sense that the adhesive went into the gap and the grooves around the wires. However, I wonder if this tiny amount of glue would keep the wires in place. Is there another option before deciding to hang the mirror again? Yes * During the gluing test we saw that the outer locating clamps was not badly scared, neither the tungsten wire. See pictures. * In order to access the screws of the inner locating clamps to tighten them we could do something like this: * Lock the payload, remove the IRM side panels (already done). * Remove the coils from the back ring of the RM in ordet to protect the magnet standoffs. * Release the mirror from the RM and withdraw the lower screws by more than a few milimeters. * Lift the RM by 3 mm using the screws from the security structure. * Loosen the outer locating clamps and move the wires out of the way just enough for the tool to reach the inner screw. * Tighten the inner screws with 2 Nm torque. * Put the tungsten wires back in the grooves and tighten the clamp again. * Lower the RM * Etc. * Washimi-san and I can do preparation on Monday and on Tuesday we can tighten the screws with Hirata-san. === TypeC === === Electronics === === Control === == Safety == == Discussion == == Travel Plans == The week from 3/29 * Takahashi: 3/29-4/2 * Sato: 3/29-4/2 * Hirata: 3/29-4/2 * Yano: 3/29-31 The week from 4/5 * Takahashi: 4/5-9 * Sato: 4/5-9 * Hirata: 4/5-9 == Next meeting == * 2021/4/2(FRI)