= Agenda/Minutes on 2020/9/25 = [[https://zoom.us/j/203743987|Zoom Meeting]] = CRY+VIS Interface Meeting = 13:00-14:00 Participants: Takahashi, Miyo, Uchiyama, Aso, Hirata, Sato, Ikeda, Tomaru, Hagiwara, Kimura, Ushiba, Sawada态Akutsu * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Upgrades/PostO3Upgrades|Post O3 Upgrade portal]] * [[https://www.dropbox.com/s/msyxd5bb8oohovv/Microsoft%20Project%20-%20bKAGRA%20O4%20200822.pdf?dl=0|Schedule]] * The schedule reconstruction for vacuum chamber opening is necessary due to the extension of RSE Trial. * Removing of SR3 is planed from end of January with moving of the assembly frame. * Confirmation of timing for the tower-payload disconnection. * Request on the IP tracking at evacuation and floor monitor at vent in IYV. = VIS Meeting = 14:00-15:00 Participants: Takahashi, Fabian, Hirata, Satou, Terrence, Miyo, Aso, Washimi, Ishizaki == Progress report == === General === * Iguchi-san will join VIS. === Type-A === * [Fujii] Can you please update the status of paper writing especially about the Type-A mechanics and its control? I also would like to know the rough schedule that you team are planning. Please let me know. Leaving your comments here will be enough. O-tsu-ka-re-sa-ma-de-su. (My account will have to be removed I guess btw..) === Type-B === * [Sato] Design of the limit switches for BS IP FR. [[attachment:BS IP FR limit switch_20200924.pdf]] * I submitted the paper to C&QG, finally. * Hirata-san and I had an information session for Washimi-san. * I asked to Takahashi-san for some long poles to mount the dial gauges around outer frames. Maybe there are some in TAMA. Work in progress. * Given the new temperature conditions in the central room, I offloaded fishing rods: * SR2 (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=15081|15081]]) and SRM (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=15083|15083]]) fishing rods are working well. * BS: F0 and BF fishing rods look healthy and F1 one is at the bottom of its range (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=15071|15071]]). * SR3: F0 fishig rod is healthy, the F1 one is still jammed and BF one at its upper limit (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=15070|15070]]). * I changed some DC filters setpoint and updated BURT and SDF files. In SR3 I keep the height of the mirror constant. * For SR3 F1, I calculated the amount of ballast the needs to be removed to bring it to nominal height: 31 grams or less (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=15102|15102]]). This number has be reviewed once I calculate how much mass we need to remove from the IM. The BF fishing rod needs to be in mid-range with control off to know. * Next week: * Same calculation for the other filters: they require setting the fishing rods to mid-range. * With the new temperature conditions I need to measure IP resonant frequencies again. * LVDT card document === Type-Bp === === Type-C === * Ordered the manufacture of a modified IMMT2 support frame. === Controls === === Electronics === == Towards O4 == * KAGRA is in "RSE Trial" now. "SEO is thinking about possibility for one week extension and the schedule reconstruction for vacuum chamber opening." * Preparation work. * The preparation work will be started on Oct. 1st. * [[https://www.dropbox.com/s/fxeig8e8aicjnc4/Booth%20cleaning.pdf?dl=0|Schedule and assignment of personnel]] * [[https://paper.dropbox.com/doc/Plan-for-cleaning-the-clean-booth--A73isqnLjN32leQb4nFiuN~BAg-KVEbnCCBASYy4ea78HBUH|Cleaning procedure]]. * Inventory sheet with [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0119/E2011960/002/KAGRA_Cleanbooth_Segment_Name.pdf|the segment name]] is necessary ([[https://www.dropbox.com/s/uz1ial5r377dgvt/Inventory%20check.xlsx?dl=0|Example of Type-A]]). * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11475|Schedule]] * Procedure documents. * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5500|Type-A tower installation]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11598|Limit switches]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11520|Limit switch connecting guide]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11978|Replacement of TF blades]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11878|Wire gluing in PR3]] * [[https://onedrive.live.com/?authkey=!AOLVVVKJ_Zpn-2c&cid=1447B05D5B571A84&id=1447B05D5B571A84!26691&parId=1447B05D5B571A84!26683&o=OneUp|Type-B remedying work]] * Criteria in the acceptance test [[https://www.dropbox.com/s/pc9y3im2v4yvz6n/Acceptance%20test%20criteria.xlsx?dl=0|Sheet]]. * Presentation * PAB (10/8) * Chief Meeting (10/12) == Safety == == Discussion == * [Terrence] VIS health checking system [[https://github.com/gw-vis/vishack|VISHack]] == Travel Plans == The week from 9/28 * Takahashi: 9/30-10/2 * Sato: 9/30-10/2 * Hirata: 9/30-10/2 The week from 10/5 * Takahashi: 10/5-9 * Sato: 10/5-9 * Hirata: 10/5-9 == Next meeting == * On 2020/10/2(Fri)