= Agenda/Minutes of the VIS Meeting on 2017/6/16 = 2017/6/16 13:30 - 15:00 Participants: Takahashi, Sato, Aso, Fujii, Okutomi, Ohishi, Tanaka, Akutsu, Shoda, Enzo, Fabian, Hirata, Mark, Raffaele, Ishizaki == Progress report == Schedule Chart : ([[https://www.dropbox.com/s/jo2l16z1vsmh3jo/VIS%20Overall%20Schedule-20170524.pdf?dl=0|PDF]],[[https://www.dropbox.com/s/dtxcne24tyiy111/VIS%20Overall%20Schedule-20170524.mpp?dl=0|MPP]]) * Type-A: 0.5 week delay * Type-B: 8 weeks delay * Type-Bp: 1 week delay === Type-A (Takahashi) === ==== Past week report ==== Installation in Y-end: 12th(Mon) * Adjusted the tilt of BF by moving masses. * Checked geometry around the BF. 13th(Tue) * Adjusted the height of damper ring for the BF. * Adjusted the yaw rotation of BF. * Attached the LVDT coils and checked the movable range. * Attached the cable clamps onto the TF. * Removed the wire clamp. 14th(Wed) * Tuned the TF to frequency less than 0.2Hz changing the compression of blades. * Assembled the cables for BF damper. * Cabled from the F1 to the TF. 15th(Thu) * Made flip cables. * Cabled around the BF damper. * Tuned the LVDT driver. * Checked the assembly of geophone pods. 16th(Fri) * Prepared for the power outage. ==== Plan for coming weeks ==== * Check of the BF damper. * Cabling to the feedthroughs. * Setting of the ACCs. * Preparation in X-end. === Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Fabian, Enzo, Hirata-san): * Hirata-san and Sekine-san moved the tank lid and service port ring to the pallet with the crane and covered the open tank with the spare clean bag. * Hirata-san and Mark got the LBB damper rings assembled and installed. A joint part for the Cu ring needed to have holes enlarged because the hole pattern did not quite match that on the half-ring. The magnet ring is hanging in the chamber and the Cu ring is attached below it with clamps, ready to receive the rods that will hang down from the PI. * Hirata-san recounted all the unused cables. * Hirata-san installed the outrigger parts on the LBB, which will receive the rods coming down from the damper ring. * Enzo and Mark tested all the stepper motors. * Enzo and Mark debugged the PI horizontal LVDTs. One LVDT had a flaky connection and one card in the LVDT driver had three dead channels. Enzo created a fully working driver using parts from another driver that also had a faulty card. * Fabian adjusted the ballast mass on the SF to get good pitch/roll/vertical adjustment and attached it with screws. * Fabian set up the optical lever again (the PR2 team had repossessed the breadboard we had been using but Akutsu-san supplied another one). * Enzo and Mark tested the pico motors. The software is very unreliable, but we we able to confirm that the IM pitch pico works. * The whole team wrapped items and shut down equipment ahead of the power outage. ==== Plan for coming weeks ==== * Recover from power outage. * Crane suspension into tank. === Type-Bp (Shoda) === ==== Past week report ==== * Mirror preparation * We glued the wire breakers and flags on the PR2 mirror on last Friday, but they detached when I checked on Sunday. * Therefore, we tried the gluing again on Monday, and checked Tuesday evening. But they did not fixed again. * We tried again on Thursday, and it is curing time now. This time, we have put more glue on them. * Other preparation * We assembled PR2 BF LVDTs and PRM BF LVDTs. They are all calibrated. * We almost finished cabling between the field rack and clean room for PR2. * PRM circuits are also almost ready. Not cabled yet. * PR3 measurement * Fujii-kun measured the properties of PR3. * We found the one of the coil driver is not working well. The current for PR3/PRM rack and IOO rack was not enough. The problem of the current was fixed with Nakano-kun, but the driver might have been driven with saturated status, which might cause the problem. Actually, the problem was fixed later somehow. We do not know why yet... * '''Miyakawa-san is asking us to report the circuits problem via e-mails when they occur in order to record them.''' ==== Plan for coming weeks ==== * Mirror/RM hanging (if they are properly fixed...) === IMMT (Ohishi) === ==== Past week report ==== * Removed IMMT2 mirror from IFI chamber * Hirose-san will carry both IMMT1 and IMMT2 mirrors to Kashiwa. ==== Plan for coming weeks ==== * Hirose-san will put first contact on HR surface of mirrors. * FCL prepare jig parts. === Watchdog system (Tanaka) === ==== Past week report ==== *Examination of experimental preamplifier circuit fabrication. *I'm checking the operation of the fabricated circuit. *Creation of extended I/O PCB(plot type (With the Main 4ch WDS box and I/O box,I/O board For relay). *Request a quote for electronic parts etc(Estimating at Univ.Tokyo.co-op). *Other estimates are complete(PCB etc). ==== Plan for coming weeks ==== *Examination of experimental preamplifier circuit fabrication. -->Ongoing. *Creation of extended I/O PCB(plot type (With the Main 4ch WDS box and I/O box,I/O board For relay).-->Ongoing. === Other site works === * Preparation for the power outage by 6/16 * Preparation for the PR floor re-work by 6/16 * 6/19: Power outage * 6/21: Safety lecture after the morning briefing * 6/21 11:30 - 12:30: Crane inspection * 6/20 -24: BS & PR booth: lighting installation (BS and PR2 area 6/23 afternoon) * 6/22-23: PR area: floor fix * 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: Open the chamber. Crane works in both ends. * Type-B: Heavy crane work. * Type-Bp: Mirror hanging. == Discussion == === Type-A === * Tasks for 6/19 (Mon) (Takahashi) * Make a detailed schedule for X-End * Make a list of missing items for X-End and put it on the VIS Type-A wiki === Type-B === * Tentative schedule after the installation into the chamber * 6/20 installation into the chamber * 6/21-22 Cabling, balancing * 6/23 prepare for the TF measurements (using OSEMs) * Measure TFs during the weekend * 6/26 OpLev installation (Simon) * Somewhere in the week of 6/26: gluing of the real BS * In the week of July 3: remove the suspension from the chamber * Make a list of tasks for the preparation of the real BS installation (Mark, to be done on 6/19). * Assign people to the above tasks (Mark) == Travel Plans == * Travel (Week of 6/19): * Takahashi: 20-23 * Shoda: 20-23 * Mark: 19-23 * Fabian: 20-22 * Okutomi: 20-23 * Fujii: 20 - 22 * Ishizaki: 20-23 * Hirata: 20-23 * Sato: 20-23 * Enzo: 20-22 * Ohishi: * Tanaka: * Akiyama(Hosei): 20-23 * Hashimoto(Hosei): 20-22 * Travel (Week of 6/26): * Takahashi: 26 - 29 * Shoda: 26 - 29 * Mark: 26 - 29 (?) * Fabian: 26 - 29 (?) * Okutomi: 26 - 29 * Fujii: * Ishizaki: 26 - 29 * Hirata: 26 - 29 (?) * Sato: 26 - 29 * Enzo: 27 - 29 (?) * Ohishi: * Tanaka: * Akiyama(Hosei): 27 - 29 * Hashimoto(Hosei): 26 - 29 == Next meeting == On 2017/6/23(Fri) Next F2F: 6/30(Fri)