= Agenda/Minutes of the VIS Meeting on 2018/3/30 = 2018/3/30 13:30 - 14:50 Participants: Okutomi, Enzo, Takahashi, Shoda, Aso, Sato, Fujii, Fujii, Tanaka, Ishizaki, Tanioka, Hirata == Progress report == === Schedule Chart === Type-A : ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7320|PDF/MPP]]) Type-B: ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|PDF/MPP]]) === Type-A (Takahashi) === ==== Past week report ==== [X-end] * Adjusted the weight of cryo-payload (CP). * Adjusted the height of F1, F2, and F3 using the FRs. The height of BF was set to 80mm. * Set the height of F0 keystone to 5.5mm adjusting the weight on the keystone. * Aligned the CP using the yaw adjustment screw in F0. * Adjusted the position of secondary coils for the BF damper. * Released the IP. Adjusted the horizontal FRs. Applied the DC control. * Closed the top chamber. [X-front] * Cabled the LVDT-Actuator and the FR in the F1. * Mounted the F1 onto the EQ stop with the maraging wire. * Cabled between the F2 and the F1. * Calibrated the LVDT of F1. * The height of keystone was too low without additional weight on the F2. * Compressed four blades. * Replaced the blade of FR from the F2 type to the F1 type. * Measured the transfer functions. The frequency of F1 was 0.3Hz. * Found that the F3 is not working. * Disassembled the F1 stage to lift up the F3. ==== Plan for coming weeks ==== [X-front] * Recover the F3. * Go buck to the F1 stage. * Prepare for the pre-isolator. === Type B (Mark) === ==== Past week report ==== ==== Report for week of 3/26 ==== BFs: * BF No. 1: * Fujii-san finished tuning. Optimal load: 52.15[kg]. Resonance frequency: 0.37[Hz]. Optimal height: 64.7[mm]. * We wired the LVDT, Picomotor and Steppermotor. * We measured the keystone tilt at different points and the differences are within 0.1[mm] * We added cable clamps to the base. * BF No.7: * Tanioka-san and Fujii-san replaced the blades corresponding to the BS for the SR type blades. * The yoke position was corrected. * The fishing rod was assembled. * Compression tuning is ongoing.?? SFs: * Hirata-san and Tanioka-san set up the frame to check the SFs. * SF (B2-5): * Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap. The optimal load changes about 250[g]. The cap didn't come out smoothly. * We measured the keystone tilt at different points, and the differences are within 0.1[mm] (65.5, 65.5, 65.5, 65.4) * SF (B2-6): * Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap (On going?). * We measured the keystone tilt at different points, and the differences are within 0.3[mm] (63.7, 63.5,63.8, 63.8) SR3/SRM: * Kozu-kun and Enzo finished the SR3 in-air cabling. * Enzo prepared the SR3 and SRM rack in parallel (On going). * The drawing of the ballast masses are almost done. Shoda will ask for quotation soon. SR2: * Hirata-san tested the safety bars in the SR2 area. * We got new power supply for the SR2 Rack. Before, the power was coming from the BS rack. BS: * After re-starting the computer, the issue reported last week was fixed. * Kozu-kun and Enzo helped Enomoto-san troubleshooting the BS Oplev issue (On going). Shipping: * We received the LBB parts for SR2. * We received the Payload parts (IM and IRM) this morning. Control Issue: * BS * The whitening filter of only IMH high power coil driver is on somehow, without anti-whitening filter. It should be fixed at some point, maybe after Phase-I. * SR2 * BIO issue was fixed and TFs of IM, BF, and SF are measured. ==== Plan for coming weeks ==== ==== Plan for week of 4/2 ==== * Mark at Mitaka Mon, Kamioka from Tue. * Shoda-san at Mitaka * Others at Kamioka * -- * Finish BFs tasks (cabling +calibration) * Finish SFs tasks (cabling +calibration) * Add cable clamps to bases. * Add cable clamps and Cu segments to caps (only if they fit well). * Build 2xIM, 2xIRM * Glue SR3 mirror? ==== Plan for week of 4/9 ==== * Shoda-san at Mitaka * Fujii-san at Mitaka * Tanioka-san at Mitaka? * Others at Kamioka * -- * OSEM calibration * Finish IMs and IRMs * Build 1xRM * Glue SR3 mirror? ==== Plan for week of 4/16 ==== * Shoda-san at Mitaka * Fujii-san at Mitaka * Tanioka-san at Mitaka? * Others at Kamioka * -- * Start SR3 Hang? ==== Plan for week of 4/23 ==== * Shoda-san at Mitaka * Others at Kamioka * -- * F0 blade prototype test ==== Plan for week of 4/30 ==== * Golden Week! ==== Discussions ===== * 52.15kg optimal load for BF No.1 may be too low. We need to change the ballast masses for the IM. * Aso will check the delivery date of SR3 with Hirose-san. * Length sensing OpLev of BS is strange. We need a calibration. === Type-Bp (Shoda) === ==== Past week report ==== ==== Plan for coming weeks ==== === OMMT & OSTM (Ohishi) === ==== Past week report ==== ==== Plan for coming weeks ==== === Watchdog system (Tanaka) === ==== Past week report ==== *Business trip plan *March 25(Toyama),26th-29th(Kamioka),30th(Preliminary day Toyama->Tokyo) *Installation place-->PRM,PR3,PR2,BS,SR2(However,only to install. Launch is done on another occasion.) —>Completed *Prepare necessary documents —> JGW-S1808015,S1808016,S1808017,S1808021,S1808022,S1808010,S1808011,S1808012 ==== Plan for coming weeks ==== *Next install plan *I plan to install SR3 and SRM after completion of installation. *Actual launch is scheduled for May or later. === Other site works === === Safety === * Incidents: no incident * Foreseen risks * Type-A: Crane work * Type-B: Crane work, working with springs. * Type-Bp: == Discussion == === Phase 1 Operation === * Stay in ICRR lodging * Okutomi: Locomotion 4/23 - 5/1 * Tanioka: Yuuki House 4/23 - 5/1 * Kozu ? * Emergency contact list * Type-A: Okutomi, Takahashi * Type-B: Mark, Fujii * Type-Bp: Shoda, Miyo(?) === Misc === * Can the PR2-PR3 duct be permanently installed ? * For working with PR2 and PR3, it is OK to have the duct installed. * Publications/Presentations related to KAGRA in FY2017 * Please send the list to Aso by April 6th. * Bus time table change * Seek for a possibility to renting parking spots for the lease cars. == Travel Plans == * Travel (Week of 4/2): * Takahashi: 3-6 * Okutomi: 3-6 * Sato: 3-6 * Ishizaki: 3-6 * Mark: 3-6 * Hirata: 3-6 * Enzo: 3-5 * Shoda: * Ohishi: * Fujii: 3-6 * Tanioka: 3-6 * Tanaka: * Kozu (ICRR): 3-6 * Arai (ICRR): * Travel (Week of 4/9): * Takahashi: 10 - 13 * Okutomi: 9 - 13 * Sato: 9 - 13 * Ishizaki: 9 - 13 * Mark: 9 - 13 * Hirata: 9 - 13 * Enzo: 9 - 12 * Shoda: * Ohishi: * Fujii: * Tanioka: 9 - 13 * Tanaka: * Kozu (ICRR): 9 - 13 * Arai (ICRR): == Next meeting == On 2018/4/6(Fri)