= Agenda/Minutes of the VIS Meeting on 2017/6/23 = 2017/6/23 13:30 - 15:00 Participants: Mark, Okutomi, Sato, Ohishi, Aso, Ishizaki, Fabian, Enzo, Shoda, Raffaele, Akutsu, Tanaka, Takahashi == Progress report == Schedule Chart : ([[https://www.dropbox.com/s/035etsa8bbfzth2/VIS%20Overall%20Schedule-20170620.pdf?dl=0|PDF]],[[https://www.dropbox.com/s/v9cqbycq6vgggng/VIS%20Overall%20Schedule-20170620.mpp?dl=0|MPP]]) * Type-A: A week delay in Y-End. On schedule for X-End but the X-End schedule need to be shortened. * Type-B: Updating the real BS installation schedule. * Type-Bp: 2 weeks delay by the gluing problem, but progressed other works scheduled later. === Type-A (Takahashi) === ==== Past week report ==== Installation in Y-end/X-end: 20th(Tue) * Recovered from the power outage. * Opend the chamber. * Tuned the TF by changing the compression of blades again. * Disassembled the bridge frame. 21th(Wed) * Continued the tuning of TF to 0.2Hz. * Released the IP and adjusted the tilt of the IP base. * Checked the FR for TF. The FR was not working. * Made the cables for ACC. * Transported some items from the Y-end to the X-end. 22th(Thu) Y-end * Tuned the IP roughly. The frequency is 80mHz. * Adujusted the centering of IP by the tilt of IP base and the motor sliders. * Started cabling from the TF to the feedthroughs. X-end * Cleaned the floor. * Covered the floor by SUS sheets. ==== Plan for coming weeks ==== * Setting of the BF damper. * Cabling to the feedthroughs. * Setting of the ACCs. * Preparatioin in X-end. === Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Fabian, Enzo, Hirata-san): * We disconnected the in-vacuum and in-air cabling from the feedthroughs. * We removed crossbars below BF and SF. * We set the SF damper to 4 mm clearance. * We adjusted the jacks to nominal height. * We removed the geophones and PI yaw stepper for craning. * We craned the suspension into the tank, and hooked the LBB Cu ring. * We replaced the geophones etc. * We unlocked all but the IP and adjusted the jacks until the pendulum was centered in the security structure. * We unlocked the IP and adjusted to to center with the jacks and fishing rods. * We craned the vacuum tank lid+ring back on, and then removed just the lid (only). * We unclamped the LBB damper rings and removed the spacers. * We removed the blocks and shims supporting the LBB, inserted the long screw feet and hooked the LBB to the Cu damper ring. * We added 2*31.5 kg of ballast to the LBB, which got the blades to the point where firm pressure would depress the tips. * We reconnected the in-vacuum cabling. In ≈15 places we opted to omit the Type 1 cable and use a F-F gender bender. * We reconnected all but four of the in-air cables. ==== Plan for week of 6/26 ==== Mark and Enzo at Kamioka: * Double-check where gender-benders were used. * Finish connecting in-air cabling. * Debug all cabling. * Work with Simon to set up LSOL. Fabian at Mitaka: * Design final ballast masses for IM, BF and SF assuming no BF rebuild (needs to be adaptable). * Check all items for BS flag/prism gluing are available (prisms, flags, jigs, mirror box, glue, scale, mixing tools etc). Hirata-san at Mitaka: * Do new 3D CAD: * BS Test Hang build, with top of tank, full suspension, and LBB damper all reversed. * Final BS build, as above, but with everything BF down rotated back to original. * In-tank version. * On-assembly-frame version. (Adjust jack positions if possible, or leave for Mark to do.) * SR2 on BS assembly frame. (Adjust jack positions if possible, or leave for Mark to do.) === Type-Bp (Shoda) === ==== Past week report ==== * The wire breaker still refused to be attached. * We tried two more times (on Tuesday and Wednesday). The 2nd wire breaker was attached. But the 1st wire breaker still have not been glued. * We tried gluing again today at IYC clean booth. * The temperature change by 3 degrees during the power outage, which corresponds to about 2 mm height change per 1 GAS filter. And the temperature seems to change more if the power is not turned on for longer time. * PRM optical bench intermediate ring and damper ring are prepared and set inside the PRM chamber. * PRM cabling is almost ready at outside the clean booth. * BIO system is implemented into the PR3 model, but we need help of Kokeyama-san or Miyakawa-san in order to increase the BIO card more than 10. ==== Plan for coming weeks ==== * Please glued. Then mirror hanging. === IMMT (Ohishi) === ==== Past week report ==== * Drawing some parts related with IMMT; coil holder support, etc. ==== Plan for coming weeks ==== * 6/27(Tue)-28(Wed) Magnets and standoffs gluing at Kashiwa === Watchdog system (Tanaka) === ==== Past week report ==== *Examination of experimental preamplifier circuit fabrication. --> *I completed the performance test of the PreAmp. for use on the KAGRA side.However,data analysis is in progress.Report(JGW-E1706850)[[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0068/E1706850/001/Project%20WDS%20PreAmp%20Design%20170623.pdf|PDF]] *Creation of extended I/O PCB(plot type (With the Main 4ch WDS box and I/O box,I/O board For relay).--> *Estimate --> completed. *Waiting for purchase of goods. ==== Plan for coming weeks ==== *Creation of extended I/O PCB(plot type (With the Main 4ch WDS box and I/O box,I/O board For relay).-->Ongoing. *Examination of experimental preamplifier circuit fabrication. -->Ongoing. *Adjustment of experiment schedule etc. in the KAGRA side start. === Other site works === * 6/26-30: PR area: stainless steel flooring * 6/28: Maintenance of the rapid charger for the electric vehicles === Safety === * Incidents: no * Foreseen risks * Type-A: Crane work to close the chamber * Type-B: Close the lid back on * Type-Bp: Mirror hanging == Discussion == === Type-A === * The immovable FR on the TF will be fixed after the CRY test hanging is finished. * X-End schedule is too tight. We need to find ways to expedite the schedule. Takahashi and Aso will discuss it in the next week. === Type-B === * We want to do the gluing work of the real BS in the week of July 3rd. * We need a Pelican box for the transportation of BS. * Will check the size of the existing Pelican box to see if the BS mirror box fits in. * Mark will talk to Hirose-san about the gluing schedule and the Pelican box issue. === Type-Bp === * The schedule is delayed by the gluing problem. * Aso will check the impact of this to the commissioning schedule === Cable purchase === * Type-B wants to use much shorter cables to connect from the suspension to the flange. * Will talk to Sato-san after the meeting. == Travel Plans == * Travel (Week of 6/26): * Takahashi: 26 - 29 * Shoda: 26 - 29 * Mark: 26 - 29 * Fabian: * Okutomi: 26 - 29 * Fujii: * Ishizaki: 26 - 29 * Hirata: * Sato: 26 - 29 * Enzo: 27 - 29 * Simon: 26 - ?? * Ohishi: 27 - 28 (Kashiwa) * Tanaka: * Akiyama(Hosei): 27 - 29 * Hashimoto(Hosei): 26 - 29 * Travel (Week of 7/3): * Takahashi: 3 - 7 * Shoda: 3 - 7 * Mark: TBD * Fabian: TBD * Okutomi: 3 - 7 * Fujii: * Ishizaki: 3 - 7 * Hirata: TBD * Sato: 3 - 7 * Enzo: TBD * Ohishi: * Tanaka: * Komori (Ando lab.): 3 - 7 * Hashimoto(Hosei): 3 - 6 == Next meeting == On 2017/6/30(Fri) Next F2F: 7/??