= VIS Meeting on 2015/12/4 = 2015/12/4 13:30 - 17:30 Room 210 + !SeeVogh Participants: Takahashi, Akutsu, Raffaele, Ishizaki, Tanaka, Mark, Shoda, Okutomi, Fujii, Fabian, Joris, Agatsuma, Hirata, Ohishi, Aso == Schedule == * Schedule status (Aso) * [[attachment:05_VIS-20151203.pdf|Latest schedule chart]] == PR == * Test Hanging Status (Takahashi) * LVDT driver * Akutsu-kun checked one LVDT driver in the office. It seems to work fine. * '''Will bring this one into the tunnel for the hanging test ''' * Picomotor connection * Both In-vac and out-vac cables are ready * '''Will test the connection on Monday ''' * Fishing rod motor * In-vac cable assembly failed at the site. No spare D-SUB9 at the site. * '''Will use a non-vacuum compatible D-SUB for the hanging test. ''' * Oredered a tool for removing failed pins from D-SUB * Digital system is not working most of the time * We should prepare analog alternative for signal checking * PR2 preparation (Mark, Fabian) * Cleaned up the area * Set up a temporary clean booth * Put the steel sheets under the assembly frame * Hanging frame is now set inside the assembly frame * Hanging frame is mostly completed * Location of the EQ stop pillars * There are 4 holes to hold the EQ stop pillars around the TM, but we use only 3 of them to avoid interference with the main beams. * '''Takahashi will give Hirata the desired positions of the pillars ''' * '''Hirata will update the 3D model accordingly and give it to Akutsu ''' * '''Akutsu will check for the compatibility with the !OpLev ''' * A cable clamp to be attached to the suspension rod has a wrong size collet. * It is already at the site. To be washed. * Payload weight issue * BF load check at the ATC * BF#1 Previous measurement 53.1kg without fishing rod. -> 52.9kg w/o fishing rod, 53.3kg with fishing rod * The theory that we mistook BF#1 for #2 was wrong. * 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) ''' * Need to prepare additional balast masses with better design * '''Fabian will design ones on Monday (12/7) ''' * '''Takahashi and Hirata will make 2D drawings (adding surface treatment information and so on) and order to a company ''' * Traverser actuation check (Shoda) * Traverser stop mechanism (Shoda) * Uraguchi-san's plan seems fine * Procurement status (Takahashi): Told Uraguchi-san about our decision.''' Will order the parts soon. ''' * Clean work procedure * Particle count record (Shoda): Got the calibration factor from Hasegawa-kun. 10^4 cnts/m^3 for below 0.3um. -> ISO class 5. * Where to put the floor coach filters for PR2 and PR3 work -> Consult with Hirose-san * Okutomi had a discussion with the cleaning company. http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4659 * KAGRA should have a special meeting for clean requirements ('''Aso will propose to Saito-san''') * PR CAD model and assembly drawings (Hirata) * '''Need to give the rotation angle of the traverser top plate (Aso) ''' * Cable status (Takahashi) * 12/1: 4th delivery. One more is remaining. * Made a cable list -> Put a link to the excel file on Wiki. '''Takahashi will improve the table. ''' * Call for shift for cable checking (Takahashi) * Liu-kun will come from 12/7 * Call for shift for assembly help (Takahashi) * Made a call for shift for helping the installation works * PR2 gluing schedule (Tatsumi) * Had a discussion with Hirose-san (Aso) * Hirose-san will apply FC on PR2 on 12/4 * He would like to check the removal of FC on 12/9 from the test hanging suspension. If there is any problem with it, he will redo the FC application on PR2 and PR3 before transportation. * Schedule * 12/4: FC application (Hirose) * 12/7: Flag gluing (Tatsumi) * 12/10: Packing and transportation (Tatsumi, Manuel, Ishizaki) * What to transport * PR2, PR3, original containers of the spare mirror and PR3 * Wire cleaning * We need to clean the suspension wires before the real suspension hanging. * Buy new wires and do acetone wipe at Mitaka * '''Hirata will do the actual wiping (Thu or Fri) ''' * '''Mark will send the LIGO procedure to kagra-seis by Mon. ''' * '''Fabian will compile the number of wires necessary by Mon. ''' * '''Takahashi will buy the wires (by Tue) ''' * Cleaning of the existing winches * They get dirty by contacting the oilly wires * The wires to be installed into the vacuum will not contact the drum part * Wiping the drum will be sufficient * Production of additional PR winches (Akutsu) * Most of the parts were delivered. * ATC engineers is test assembling the winches (mostly complete) * RM compensation mass * Design status (Fabian): Do it later. * Order status (Takahashi): Placed an order. '''Will check the delivery date''' '''(Takahashi) ''' * Need to buy screws for fixing the compensation masses. '''Takahashi will check the lengths of screws ''' * For the RM assembly in the test hanging, SUS screws were fine (no gulling). So we will use SUS screws. * RM EQ stop screw position (Takahashi) * Out sourcing: Need to send the plates to the company -> Sent 6 sets on Tue. One set remaining at the site. * PR Optical Bench (Akutsu) * For PR3 OpLev, we don't need to have an in-vac reflector. So we don't have to raise the optical bench. * 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) * 22 OSEMs were assembled * 10 OSEMs per suspension, so should be enough for PR2 and PR3 * One risk is that they use old flexible circuits. * Rails for the hanging frame (Hirata) * The ball exchange of the rails were finished. Already installed into the PR2 hanging frame. * Test hanging vacuum installation * Do we have everything necessary * '''Takahashi willl make a procedure by Mon ''' * Cleaness check by Hirose * Hirose will come on Wed. * What needs to be done when the suspension is inside the chamber ? * Transfer function measurement * Spectrum * Do we need OpLev -> Yes * Check the orientation of the mirror * Using the laser marker * Use OpLev for pitch ? * Mark will test the laser lever at Kamioka * Can we use the arm ducts as tilt reference ? (Ask Saito-san) * Check the height with laser marker * Peel off the first contact first * Practice of the suspension cleaning using the air gun * Inner frame modal analysis with the suspension (Takahashi) * Next week (from 12/7) plan * Test hanging * Mon: Preparation of installation into the chamber, LVDT test, Fishing rod test, Picomotor test, cable check instruction * Tue: Continue the preparation work. Final check of the payload (balance of IM and so on) * Wed: Install the suspension into the chamber * Thu: Peel off the first contact. Hammering test. Cleaning practice. * Fri: Release the EQ stops. Check the free hanging. Check the orientation. * PR2 * Mon: Assemble hanging frame * Tue: Find screws and other parts * Wed: Find screws and other parts * Thu: Put IM on the frame * Fri: Receive PR2 mirror. Move the winches from PR3 to PR2 * Travel (Week of 12/7) * Takahashi: Mon-Fri * Shoda: Mon-Fri * Mark: Mon-Fri * Fabian: Tue(PM) - Fri * Okutomi: Mon-Fri * Fujii: Mon-Fri * Ishizaki: Thu-Fri * Hirata: * Ohishi: * Travel (Week of 12/14) * Takahashi: Mon-Thu * Shoda: Mon-Fri * Mark: Tue-Thu(AM) * Fabian: Mon-Fri * Okutomi: Tue-Fri * Fujii: * Ishizaki: Tue-Fri * Hirata: * Ohishi: * Agatsuma: 12/7 - 12/10 * Joris: 12/7 - 12/18 == BS == * What to do with BS after iKAGRA (Aso) * We need to decide on the plan by the end of Dec. * 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 installation procedure (Aso) * Sent the final version drawings to Mirapro * Waiting for quotation == Other == * Watch dog system (Tanaka) * '''Need to confirm the maximum output voltage from the coil drivers. Is it less than 14V ?(Aso)''' * How many channels are necessary ? -> roughly 100ch * RMS threshold level to be used for the development -> 150mA RMS over 2sec * Damping resistance -> 0 Ohm. * GAS blade inspection by Virgo (Takahashi) * Waiting for shipping information: * 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) -> Status * Safety at the site (Takahashi, Ishizaki) * There was a near miss. Please read the report by Ohishi and Ishizaki == Next meeting == 2015/12/11 (Fri) 13:30 -