= VIS Meeting on 2016/2/5 = 2015/2/5 13:00 -15:00 Kamioka TV conference room + !SeeVogh Participants:Shoda, Tanaka, Faian, Hirata, Mark, Takahashi, Okutomi, Aso, Sekiguchi, Tatsumi, Akutsu == Schedule == * Schedule status (Aso) ([[attachment:05_VIS-20160205.pdf|Chart]]) == PR3 == * PR3 Installation Status (Takahashi) * #Traverser repair: Repair of the broken ones at Mitaka -> Uraguchi-san is working on it. * #Screws to fix the front and back rings the RM were too long, or the tapping in the holes were too short. Couldn't use M5x40. Ordered M5x35 with vent holes. -> Delivered. '''Remember to replace them''' * PR3 flag and 2nd wire breaker repair status (Tatsumi) * PR3 arrived at Kamioka. Sitting in the front room of the PR3 clean booth. * The frame for the clean bag is bent. * Mirapro is available to reinforce the frame by gluing diagnal beams on Feb. 22. * Once reinformced the frame cannot be disassembled. The frame will stay on the 2F. * Will ask Mirapro to go ahead (Aso)-> done === Plan for the next week === * Mon: Hang the mirror * Tue: Hang RM, Cabling * Wed: RM alignment, Signal check of OSEMs * Thu: Set the top plate on the assembly frame * Fri: Hang IM == iKAGRA ETM suspension == * Assembly of the suspension (Ohishi) * Mostly completed. * Need to buy some screws-> ordered * Missing parts (Tatsumi, Takahashi) * Plates to fix the connectors on the suspension frame were ordered. -> Delivered to Mitaka * Coil bobin: Delivery date-> Delivered to Kamioka * Insulation tubes for picomotor connectors -> ordered * PRM transportation (Tatsumi) * Wire breakers do not fit the plastic container. * Asking for quotation for a larger size, but will take some time * Cutting slits on the side wall of the container is another possibility. In this case, wrap the thing with a plastic bag willl be necessary for preventing dusts from coming in. * '''Will consult with Hirose-san about this (Tatsumi).''' * Coil winding (Takahashi) * Will be done by Ando-lab students from 2/8 * Winding machine test status ? (Takahashi) -> Setup the machine in the clean booth. Test winding OK. === Plan for the next week === * 2/8-2/12: Completion of the assembly. TF measurements * 2/12: Packing == Travel Plans == * Travel (Week of 2/8) * Takahashi: Mon-Wed * Shoda:Mon-Fri * Mark: * Fabian: * Okutomi:Mon-Thu * Fujii:Mon-Fri * Ishizaki: * Hirata: * Ohishi: * Travel (Week of 2/15) * Takahashi:Mon-Thu * Shoda:Mon-Thu * Mark: * Fabian: * Okutomi:Mon-Thu * Fujii:Mon-Thu * Ishizaki: * Hirata: * Ohishi: * Sekiguchi: Mon-Thu == Other Mechanical Issues == * Wire winches * Now in the ATC clean room. * Asked Ikenue-san to repair it (Takahashi) * Clean work procedure * Will be discussed at F2F. * #BF Optimal Weight (Takahashi) * #Balast masses: Delivered to Mitaka. Will send them to Kamioka (Hirata) * #IM wire clamps * #Need to send the wire clamps used for the test hanging to I-ject: it was sent to I-ject (Takahashi) * #Traverser actuation check (Shoda) * #PR CAD model and assembly drawings (Hirata) * Aso calculated the rotation angle * PR3: 0.786deg counter clockwise from the line connecting the centers of the PR3 and BS chambers. * Will make a report soon. * #Wire cleaning (Hirata) * Hirata will order 20m more wires. -> Delivered. Will wipe in the next week. -> Finished. Will send to Kamioka soon. * Will wash Tungsten wire delivery status -> Delivered. Will wipe in the next week -> Finished. Will send to Kamioka soon. * #Production of additional PR winches (Akutsu) * Shipping status (Takahashi, Hirata) -> Wrapped. Will be shipped with IP in the next week. * #OSEM assembly status (Akutsu) * #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 * All the items are now done or being taken care of * #Missing items(to be purchased soon) * #Traverser motor driver (Shoda)''' ''' -> Will discuss Uraguchi-san. Need a box for stepping motor driver. -> These are for PR2. Will be ordered sometime. == Electronics == * What are necessary in the next few weeks ? * Nothing * Electronics diagram and review * Had a review on PR3 on Thursday - [[KAGRA/Subgroups/VIS/VISMinutes20160204|minutes]], [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=719|Mark's klog]] * We still need an overview diagram-> Mark will show us a draft version in the next meeting. * Watch dog system (Tanaka) * Made a prototype circuit board for checking the PCB design before ordering * Getting quotations for electric components * Will get a quotation for PCB production soon (target date is Feb 15) * #LVDT distributor connector problem * Miyakawa-san circulated a design of the conversion cable (D9-D15): [[attachment:ESB-K003-G004-01A.pdf|drawing]] * #Digital System (Okutomi, Fujii) * #Cable status (Takahashi) * Need to send more PTFE cable to finish the remaining two -> '''Will do it in the next week ''' * Need to send the cables used for the test hanging once it is finished. -> '''Will send them once the test hanging is disassembled. ''' * #Cable check * Liu-kun Zhao-kun finished checking all the cables. They found another broken cable. * Will send the broken cables together with the other cable related items (Takahashi). == bKAGRA preparation == * Three big categories of the tasks * Type-A: Leader = Takahashi: Task list, team members * Type-B (BS and SRC): Leader = Mark: Task list, team members * Type-Bp modification: Continue discussion (Aso, Raffaele) == Common Issues == == BS and SR == * Task list[[KAGRA/Subgroups/VIS/TypeB/TaskList]] * Kick off meeting within February (Mark) * BS prism preparation * Contacted the company LIGO used for the possibility of buying sapphire prisms (Mark) * They are happy to take an order. No Japanese agent. But international order can be taken. * Will ask for the lead time to the company (Mark) [[attachment:JGW-D1504344_rev2.pdf|Drawing to be sent]] ([[attachment:D0810033_ADLIGO SUS IMC_PRISM_BREAKOFF_WIRE LOOP_TEST MASS.pdf|LIGO drawing]]) -> '''Send the drawing to the companies immediately assuming SR uses 5mm''' * Can we make the BS and SR prisms the same: [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=718|Mark/Hirata klog]] -> Seems possible to use the same size 5mm * Can we make SR wire breakers bigger ? * We need to decide on how much to widen. Check what happens if we use 5mm tall prism on CAD (Hirata) -> [[attachment:wire and groove position.pdf|Result]] * Make the slit wider by 3mm will interfere with a M5 threaded hole * The hole is needed to keep the mechanical rigidity * Can make a new M5 hole somewhere near by ? * Check what happens if we widen the slit by 3.75mm and make a new M5 (Hirata) -> [[https://www.dropbox.com/sh/f5lnexvb6k9bovo/AABEYf4_C19GXYEuJZZiy7cqa?dl=0|Result]] * Will talk to Fukushima-san again (Hirata) * Wider cuts will break the horizontal balance. '''Need to check how much compensation mass is reduced. ''' * Flag design (Mark) * Mark will sort out the ideas and organize a specialized meeting.-> '''will present an updated version in the next meeting.''' * IP base clamp (Fabian): [[attachment:image.png|Picture]] -> Reduce the number of clamps-> Hirata-san is working on 2D drawings. '''Will finish on Monday. ''' * Bread board spring (Takahashi): '''Will talk to Mark after the meeting. ''' * New accelerometer for IP (Joris) * Will give a talk at an NAOJ seminar in March-> Will tell him to contact Akutsu-kun-> done * #BS Assembly Frame Design (Aso, Hirata) * #BS gluing jigs (Tatsumi) * #Not enough crane height problem (Hirata, Saito) * #BS clean bag (Aso) == Type A == * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4792|Task list]] (Takahashi) * Need more frequent interaction with cryogenic people * Simulation task is needed. It should be the first priority * Blade design task is missing * '''Prioritize the tasks and make a tentative schedule by the next meeting (Takahashi)''' * Fishing rod production status (Takahashi) * Ordered the material for the blades. * Stepping motors were ordered. * Mechanical parts remaining to be ordered -> ordered * #Type-A Filters Optimal Load Measurements * #Takahashi will make a plan for the optimal load check and ask ATC.-> Check two filters per month from April 2016. -> Will be presented to the ATC steering committee. * #How to manufacture the long maraging wires ? * One prototype was machined by Ojima * Aoshima can do the heat treatment for the long rod. Will ask them soon (Takahashi) -> Still waiting for a quotation. * How to test it ? * We can use the prototype assembly frame in TAMA. == Type-Bp modification == * PRM traverser * Postpone the production to the next FY until we know the details of the modification. * '''Tell Uraguchi-san about the above plan (Takahashi)''' * #PR2 Wire breaker problem * Prism removal from PR2 (Hirose, Mark) * Not yet ready == Other == * Safety * No incident * Installation procedure document * Many people need to contribute to the document. However, we need one person responsible for the consistency of the document. * BS installation document: Mark will be the editor. * iKAGRA PR3 installation document: Shoda will be the editor * #GAS blade inspection by Virgo (Takahashi) * Shipped the blades. Will get results in 1-2 months. == Next meeting == 2015/2/12 (Fri) 13:30 - The next F2F at Mitaka: 2/19