= Agenda/Minutes of the VIS Meeting on 2017/7/21 = 2017/7/21 13:30 - 15:50 Participants: Mark, Enzo, Ishizaki, Fabian, Shoda, Aso, Okutomi, Tanaka, Simon, Sato, Takahashi, Ohishi, Raffaele == Progress report == Schedule Chart : ([[https://www.dropbox.com/s/1r3g1vvw6bypvc6/VIS%20Overall%20Schedule-20170721.pdf?dl=0|PDF]],[[https://www.dropbox.com/s/aqi2nrn33aeusvm/VIS%20Overall%20Schedule-20170721.mpp?dl=0|MPP]]) * Type-A: On schedule * Type-B: 1.5 weeks delay, but by re-arranging the works, there will be no net delay in the overall schedule. * Type-Bp: 1 week ahead of schedule === Type-A (Takahashi) === ==== Past week report ==== [X-end] 19th(Wed) * Transported some items from Y-end to X-end. 20th(Thu) * Preassembled the BF damper. * Measured the weight of DP and BF. * Replaced the receptacles in the BF. * Replaced the blades for FR in the BF. * Replaced the cable clamps on the BF * Set the release sensors for the BF. 21st(Fri) * Adjusted the rotation of frame lock. * Hooked the short maraging wire to the BF. The DP was suspended from the BF. * Tuned the BF roughly. The optimal frequency was about 0.5Hz. More compression is necessary. [Y-end] 18th(Tue) * Cabled from the cryo-payload to the BF. * Closed the EYV chamber completely, The o-ring was replaced. 19th(Wed) * Checked the cable connection. One cable was disconnected. * Unplugged in-air cables from feedthroughs. * Closed the cross tube completely. 20h(Thu) * The brackets for the corrugate tube were replaced. Measured the height of the EYV chamber. 21st(Fri) * Plugged in-air cables to feedthroughs. * Started evacuation of the chamber. ==== Plan for coming weeks ==== * Monitering behavior of the Type-A tower in Y-end. * Installation of the bottom filter in X-end. === Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Enzo, Hirata-san, Yoshioka-kun): * We lubricated the stuck screw at the top of the security structure with stuck and were able to remove it. * Enzo disconnected and removed or coiled many in-vac cables at the PI level to free it. * We craned the PI. There was a minor safety incident - see below. * Hirata-san set up the filter service area, and we moved in a BF intended for one of the SRs (BF#3). * Fabian and Hirata-san worked out a method for characterizing a single spring, and Fabian finished characterizing the first one. * We did a big tidy-up and clean-up of the area, especially the corner where we intended to do the gluing. * We set up the BS gluing jigs and applied the glue. We will check the results on Monday. ==== Plan for week of 7/24 ==== Full team at Kamioka from Mon-Fri, except Hirata-san (Tue-Fri) and Enzo (vacation). * Check results of gluing. * Finish disassembly. * Finish BF rebuild. * Recheck alignment of assembly frame and centering of optical table. * Install IM, suspend BS and RM. ==== Plan for week of 7/31 ==== Full team at Kamioka from Mon-Fri, except Fabian (Mon-Thu) and Enzo (vacation). * Remove LBB rings. * Weigh/trim BS/RM/IM. * Bring in rebuilt BF. Vacation Info: Hirata-san: Thu 7/20 through Mon 7/24 Enzo: Sat 7/22 through Sun 8/6 Fabian: Fri 8/4 through Mon 8/21 Mark: TBD Mid-Oct === Type-Bp (Shoda) === ==== Past week report ==== * IM TF measurement * IM TFs seem to be OK. * The coupling from IML to TMP could not be observed with Oplev with a good coherence. The coupling ration should be less than 10^-1 rad/m with a rough estimation. (Some parameters need to be checked.) * All parts are assembled on the suspension. * BF/BFRM parts are assembled except that BF/IM/TM are not suspended from the SF. * Cabling is almost done. * Berndy male pins are running out. ==== Plan for coming weeks ==== * Suspend the BF and blow from the SF, and adjust the weight and the balance * TF check * Installation preparation * Prepare for PRM Traverser shipping. === IMMT (Ohishi) === ==== Past week report ==== ==== Plan for coming weeks ==== === Watchdog system (Tanaka) === ==== Past week report ==== *Creation of extended I/O PCB(plot type (With the Main 4ch WDS box and I/O box,I/O board For relay).--> *Order electronic parts -->No delivery(Coop Univ.Tokyo). *Order PCB's(Ex-I/O Interface and relative PCB's) -->Delivery complete. *Looking for board manufacturer(Manufacturer who makes PCB manufacturing and mounting(including parts procurement). *Start of preliminary experiment at KAGRA site. *Start production of equipment(As soon as parts are delivered).-->Start PCB check. ==== Plan for coming weeks ==== *Experiment schedule(for KAGRA site).-->24th( Tokyo-->Toyama ),25-26th full(KAGRA),27th(Reserve and Toyama --> Tokyo ) === Other site works === * 7/25 - 26: Y-arm water pump exchange * End of Aug. to Nov.: Mozumi entrance will be closed === Safety === * Incidents: * One of the rods supporting the SF damper ring of the BS came off while pulling the suspension out of the chamber. * Dropped a tool from the second floor to the first floor while working on PR2 * When taking out the clamps for the clean booth floor panels, bottom part of the bracket fell to the first floor. * Foreseen risks * Type-A: Crane work BF EQ * Type-B: Crane work SF, BF * Type-Bp: No crane work == Discussion == * What to do with the dirty maraging rods supporting the SF damping plate. * Check the number of rods and the receptacles we have now (Mark, Fabian, Takahashi) * Order new rods if the number is not enough * Send the current rods for nickel plating (Takahashi) * Signal generators for LVDT * Takahashi-san will send VIS the information of the NIKHEF daughter board * Share the information with AEL and discuss whether we should buy those boards or do something else == Travel Plans == * Travel (Week of 7/24): * Takahashi: 24 - 28 * Okutomi: 24 - 28 * Sato: 24 - 27 * Ishizaki: 24 - 28 * Mark: 24 - 28 * Fabian: 24 - 27 * Hirata: 25 - 28 * Enzo: * Shoda: 24 - 27 * Ohishi: * Fujii: * Tanaka: 25 - 26 (27) * Kuroki: 25 - 28 * Hashimoto(Hosei): 24 - 27 * Yoshioka (Toyama): 25,26,28 * Travel (Week of 7/31): * Takahashi: * Okutomi: 31 - 4 * Sato: 31 - 4 * Ishizaki: 31 - 4 * Mark: 31 - 4 * Fabian: 31 - 2 * Hirata: 31 - 4 * Enzo: * Shoda: 31 - 4 * Ohishi: * Fujii: * Tanaka: * Kuroki: 31 - 3 * Hashimoto(Hosei): 31 - 3 * Yoshioka (Toyama): 1,2,4 * Kouzu: 3,4 == Next meeting == On 2017/7/28(Fri)