= VIS Meeting on 2015/12/11 = 2015/12/11 13:30 - 16:30 Kamioka NAOJ Room + SeeVogh Participants: Shoda, Fabian, Fujii, Mark, Ohishi, Joris, Takahashi, Aso, Hirata, Tatsumi, Raffaele, Okutomi == Schedule == * Schedule status (Aso) * [[attachment:05_VIS-20151211.pdf|Latest schedule chart]] == PR == * Test Hanging Status (Takahashi) * Suspension was dumped into the chamber: the hook of a turn backle came off while slowly sitting the suspension into the chamber. The entire chain dropped by about 1cm. With this shock, at least 1 OSEM flag in IM was broken. * LVDT driver: The one used at first had a broken IC. Replaced with a new board and it worked. Need to set the gains properly. Will put information into the corresponding DCC documents. * Picomotor connection: Worked fine. * Fishing rod motor: Worked fine. Pin-extracter was delivered. So the damaged vacuum compatible cable can be fixed. * While lowering the jacks on the inner frame, some of them seemed to have galled. * How to sit the suspension to the inner frame ? * Lift up the suspension. Remove the galled jacks. * Inspect the removed jacks. * Put new jacks. * Try to sit the suspension usign turn backles. * Use 4 slings instead of 2. * Carefully level the top plate. * PR2 Status (Mark, Fabian) * Finding screws and parts. * Cleaned some parts. * What can we do before the PR2 arrives * RM assembly * Traverser assembly * Preparation of the flags * Sand the Ni-plating on the magnets before gluing to increase the adhesion ? * '''Need to order spare flag bases: 6 of them (Takahashi) ''' * Location of the EQ stop pillars (Takahashi) * '''Takahashi will tell Hirata the proper locations of the pillars. ''' * Digital System (Okutomi, Fujii) * The model is almost completed. * Now the digital system is working. We were able to measure transfer functions. * BF Optimal Weight (Takahashi) * '''Check the optimal load for the ETM BFs at the ATC: Need to be done before the end of Jan. Arrange with ATC people (Takahashi) ''' * '''Balast mass design: Takahashi will check the design during the weekend and give (not give) an approval before Monday. ''' * Fabian will give the design to Hirata-san on Monday. * Traverser actuation check (Shoda) * Now we may move the traverser in the air a little bit. * Will test it at some point. * Traverser stop mechanism * Procurement status (Takahashi): Parts were ordered. Should arrive in one week. * Clean work procedure * '''Need to check with Miyoki-san when the clean suits will be delivered (Aso). ''' * '''Ask Hirose-san about better wiping cloths (Aso). ''' * Other clean supplies: masks, * KAGRA should have a special meeting for clean requirements: Aso had a meeting with Saito-san and Hirose-san. But the meeting was interrupted by a car accident. '''Will propose another meeting (Aso)'''. * Blowing the suspension in the assembly frame -> Need to pre-arrange the schedule with other groups. * PR CAD model and assembly drawings (Hirata) * '''Need to give the rotation angle of the traverser top plate (Aso) ''' * Cable status (Takahashi) * All the cables except for two cables were delivered. * Need to send more PTFE cable to finish the remaining two. * Need to send the cables used for the test hanging once it is finshed. * Made a cable list -> Put a link to the excel file on Wiki. '''Takahashi will improve the table. ''' * Cable check * 70% done. * One cable found to be broken. '''Will send it back to the company (Takahashi)'''. * Call for shift for assembly help (Takahashi) * Made a call for shift for helping the installation works * No application so far * PR2 gluing schedule (Tatsumi) * PR2 wire breakers have cracks * PR3 ones have no crack. PR3 was transported to Kamioka * Use SUS wire breakers for iKAGRA mirrors ? * PRC mirrors will not suffer from the thermal noise * For SRC mirrors, we should test the sapphire wire breakers more carefully * Removal of the wire breakers * '''Mark will ask LIGO people about the procedure ''' * '''Contact manufacuturer (Tatsumi) ''' * Wire cleaning * Damaged one wire * '''Hirata will order 20m more wires. ''' * Will wash Tungsten wires too, but not yet delivered. * Production of additional PR winches (Akutsu) * Question from Akutsu-kun * What is the weight each drum should support -> '''Shoda will calculate ''' * What is the wire diameter to be tested? -> 650um: Takahashi ordered 600um and 650um already. Will give 1m to ATC for the test. '''Takahashi will order some extra for 650um. ''' * RM compensation mass * '''Design status (Fabian): Do it later. ''' * Order status (Takahashi): Delivered. Hirata washed and sent them to Kamioka. * Need to buy screws for fixing the compensation masses. '''Takahashi will check the lengths of screws. ''' * RM EQ stop screw position (Takahashi) * Out sourcing: 6 sets delivered washed and sent to Kamioka. Now we have all needed. * PR Optical Bench (Akutsu) * For PR2, we do need to raise the optical bench. * Delivery date for the screws: Dec. 21 * PR2 vacuum installation will be Jan. 19 * OSEM assembly status (Akutsu) * 7 OSEMs sent to Kamioka http://klog.icrr.u-tokyo.ac.jp/osl/?r=431 * OSEM screw length issue * We have a lot of M5x20 BUMAX screws * Do we need to use longer ones ? -> '''Shoda will check with the actual test mass RM''' * RM production (Takahashi) * What to do with the dirty RMs ?: '''Check with ATC if re-polishing the rough surface is possible or not (Takahashi) ''' * Test hanging vacuum installation * What needs to be done when the suspension is inside the chamber ? * Peel off the first contact first -> Done * Cabling * OpLev preparation * Hammering test * Test of cleaning by blowing * Transfer function measurement * Spectrum * Check the orientation of the mirror * Check the height with laser marker * List of what should be changed for PR3 hanging * People should share ideas whenever they come up with missing thigns. * Shoda made a spread sheet for keep tracking the ideas * https://docs.google.com/spreadsheets/d/1zZaLObWjDSEOTrr85Hz0ApXxEUChK3xJ_chk0f7r5nY/edit?usp=sharing * Next week (from 12/14) plan * Test hanging * Mon: Replace the jacks * Tue: Replace the jacks * Wed: Cleaning test, Hammering Test * Thu: Cabling * Fri: Release the EQ stops * PR2 * Mon: * Tue: Assemble RM * Wed: Put IM * Thu: Assemble RM carrage * Fri: Preparation for traverser assembly * Travel (Week of 12/14) * Takahashi: Mon-Thu * Shoda: Mon-Fri * Mark: Tue-Thu(AM) * Fabian: Tue-Fri * Okutomi: Tue-Fri * Fujii: Mon(aft)-Fri * Ishizaki: Tue-Fri * Hirata: * Ohishi: Tue-Fri * Travel (Week of 12/21) * Takahashi: Thu-Fri * Shoda: Mon-Fri * Mark: Mon-Tue * Fabian: Mon-Fri * Okutomi: Mon-Fri * Fujii: Mon-Fri * Ishizaki: * Hirata: * Ohishi: * Joris: 12/7 - 12/18 == BS == * What to do with BS after iKAGRA (Aso) * We will do the BS first * BS Assembly Frame Design (Aso, Hirata) * BS flag design (Mark, Fabian) * BS gluing jigs (Tatsumi) * Not enough crane height problem (Hirata, Saito) * IP base clamp (Fabian) * Bread board spring (Takahashi) * BS clean bag (Aso) == ETM == * ETM assembly frame (Aso) * Waiting for quotation from Mirapro (sent a reminder) * Optical table was ordered: delivery date 1/19 == Other == * bKAGRA preparation * Roadmap discussion with Ando-san (Schedule Chart) * DGS request. They need 3 weeks of preparation time before suspension installation. * List of tasks for: BS, Type-A, Type-Bp modification, IMMT. '''Make a draft list (Takahashi). Set up a Wiki page (Aso)''' * Watch dog system (Tanaka) * Will present at an AEL meeting. * GAS blade inspection by Virgo (Takahashi) * Waiting for shipping information: Go the shipping address. To be shipped soon. * Request to the ATC for the next year * Production of the blades of the Type-A BF: We should check the consistency of the optimal load at the TAMA prototype experiment and G&M measurements (SF and TF) (Takahashi) - * SF: G&M 164.7kg, TAMA: 165.3kg * TF: G&M 276kg, TAMA: 278kg * No obvious reason to distrust G&M's measurements * Should consider in-situ measurement procedure of the optimal load during the installation of Type-A * Safety at the site (Takahashi, Ishizaki) * A big near miss during the suspension installation into the chamber == Next meeting == 2015/12/18 (Fri) 13:30 - Next F2F Meeting: Jan 8