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= VIS Meeting on 2016/2/5 =
2015/2/5 13:00 -15:00		 = VIS Meeting on 2016/2/12 =
2015/2/12 13:30 -15:00
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Participants:Shoda, Tanaka, Faian, Hirata, Mark, Takahashi, Okutomi, Aso, Sekiguchi, Tatsumi, Akutsu Participants:Takahashi, Mark, Hirata, Fabian, Shoda, Fujii, Aso, Sekiguchi, Akutsu, Okutomi
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 * Schedule status (Aso) ([[attachment:05_VIS-20160205.pdf|Chart]])  * Schedule status (Aso) ([[https://www.dropbox.com/s/y586flgsr0usmvx/05_VIS-20160212.pdf?dl=0|Chart]])
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  * Wire breaker groove problem
   * Wrong surface was glued on the mirror side. So no groove is present where the wires touch.
   * Put alminum foil between the prism and the wires
  * Current status (http://klog.icrr.u-tokyo.ac.jp/osl/?r=756)
   * IM and the bottom filter is connected.
   * Adjusting the weight of the IM
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 * PR3 flag and 2nd wire breaker repair status (Tatsumi)
  * PR3 arrived at Kamioka. Sitting in the front room of the PR3 clean booth.
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  * 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		   * Reinformcement design by Mirapro
   * [[https://www.dropbox.com/s/l8er09c3d7lmsgr/VP5904-A_Bag%20Frame%20Assy.pdf?dl=0|2D Drawing]]
   * [[https://www.dropbox.com/s/j8rcpvytin0qft6/Bag%20Frame.stp?dl=0|STEP]]
   * [[https://www.dropbox.com/s/llu99rjj0gnesz2/Bag%20Assy.png?dl=0|Assembly image]]
   * [[https://www.dropbox.com/s/zsrizfnzx9xuovp/Bag%20Assy.stp?dl=0|Assembly STEP]]
  * Tell Mirapro to go ahead (Aso)
  * Mirapro will come on 22nd to make changes.
 * Crane will be not available on 2/25 for the crane upgrade to remote control. We need to coordinate with Uchiyama-san if we want to do the vacuum installation on 25th.
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 * 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		  * Mon: IM hanging
 * Tue: IMRM hanging
 * Wed: IM alignment
 * Thu: OSEM setup
 * Fri:
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  * Mostly completed.
  * Need to buy some screws-> ordered
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  * 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).'''		   * Insulation tubes for picomotor connectors
   * Tubes were delivered on Wed.
   * Cable ties are not yet delivered -> check the delivery date (Takahashi)
 * Suspension Test (Ohishi)
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  * 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.		   * Made 13 coils in total.
  * Need to send 3 bobins to the coil winding company
 * TAMA PRM transportation (Tatsumi) -> done today.
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 * 2/8-2/12: Completion of the assembly. TF measurements
 * 2/12: Packing
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 * Travel (Week of 2/8)
  * Takahashi: Mon-Wed
  * Shoda:Mon-Fri
  * Mark:
  * Fabian:
  * Okutomi:Mon-Thu
  * Fujii:Mon-Fri
  * Ishizaki:
  * Hirata:
  * Ohishi:
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VIS F2F 2/19

KAGRA F2F 2/21 - 23

 * Travel (Week of 2/22)
  * Takahashi:Wed - Thu (Fri: Akeno for the acceptance of IP from NIKHEF)
  * Shoda:Wed - Fri
  * Mark:
  * Fabian:
  * Okutomi:Wed - Fri
  * Fujii:Wed - Fri
  * Ishizaki:
  * Hirata:
  * Ohishi:
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 * Wire winches  * Rotation angle of the PR3 mirror
  * 0.786deg counter clockwise from the line connecting the centers of the PR3 and BS chambers.
  * 0.619deg counter clockwise with respect to the chamber ([[https://www.dropbox.com/s/073wcbz652i016a/VM5920_KAGRA真空容器PR3_Type-Bp.pdf?dl=0|schematic]])
   * Currently the mirror is rotated by 0.65deg (measured at the time of the test hanging).
   * This is well within the actuation range of the traverser. -> Will not make any further adjustment.
 * #Wire winches
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 * Clean work procedure  * #Clean work procedure
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 * #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.
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  * 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.
   * Mark: detailed schematics nearly ready to post - [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3615|D1503615 (full PR3)]], [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4795|D1604795 (iKAGRA PR3)]]
  * Mark: started overview schematic [[attachment:Cabling Overview.graffle.pdf|diagram]],
 * Need to make Guradian script for PR3. Shoda + Fujii and Okutomi will write one after the mechanical installation is finished.
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  * 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)
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== BS and SR == == Type-B ==
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 * 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		  * BS prism preparation (Mark)
  * 5mm prism [[attachment:JGW-D1604796.pdf|drawing]]
  * Confirmed with Hirata-san that BS can use same 5 mm prism as SR (grooves, wire clearance all OK).
  * Confirmed with Tatsumi-san that not a big deal to use smaller BS prism as long as secondary position not changed.
  * Submitted 5 mm prism drawing to company that did LIGO HSTS prism (except grooves), waiting on response.
  * Second company that did LIGO groove cutting not interested in quoting - exploring other US companies.
  * Should contact Shinko-sha again (Takahashi)
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  * 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. '''		   * 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]]
   * Two concerns
    * The rework may bend the wing shaped parts.
    * The P.C.D. of the new screw holes may not coincide exactly with the other existing holes
   * Consult with Fukushima-san again. Takahashi will contact Fukushima-san
   * Do we need to widen the slits for PRC RMs ? -> Depends on how difficult it is to rework the RM.
   * Wider cuts will break the horizontal balance. Need to check how much compensation mass is reduced (Hirata) -> 2mm reduction will be necessary. We can do this.
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  * 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		   * Shorter flag is desirable ?
  * 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 finished 2D drawings. Trying to get quotation now.
 * Bread board spring (Takahashi): Hirata-san is getting quotations.
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  * 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
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  * '''Tell Uraguchi-san about the above plan (Takahashi)'''   * Tell Uraguchi-san about the above plan (Takahashi) -> done
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 * 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
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2015/2/12 (Fri) 13:30 -

The next F2F at Mitaka: 2/19		 2015/2/19 (Fri) 13:30 - @ Mitaka

VIS Meeting on 2016/2/12

2015/2/12 13:30 -15:00

Kamioka TV conference room + SeeVogh

Participants:Takahashi, Mark, Hirata, Fabian, Shoda, Fujii, Aso, Sekiguchi, Akutsu, Okutomi

Schedule

  • Schedule status (Aso) (Chart)

PR3

  • PR3 Installation Status (Takahashi)
    • Wire breaker groove problem
      • Wrong surface was glued on the mirror side. So no groove is present where the wires touch.
      • Put alminum foil between the prism and the wires

    • Current status (http://klog.icrr.u-tokyo.ac.jp/osl/?r=756)

      • IM and the bottom filter is connected.
      • Adjusting the weight of the IM

    • #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

  • The frame for the clean bag is bent.
  • Crane will be not available on 2/25 for the crane upgrade to remote control. We need to coordinate with Uchiyama-san if we want to do the vacuum installation on 25th.

Plan for the next week

  • Mon: IM hanging
  • Tue: IMRM hanging
  • Wed: IM alignment
  • Thu: OSEM setup
  • Fri:

iKAGRA ETM suspension

  • Assembly of the suspension (Ohishi)
  • Missing parts (Tatsumi, Takahashi)
    • Insulation tubes for picomotor connectors
      • Tubes were delivered on Wed.

      • Cable ties are not yet delivered -> check the delivery date (Takahashi)

  • Suspension Test (Ohishi)
  • Coil winding (Takahashi)
    • Made 13 coils in total.
    • Need to send 3 bobins to the coil winding company

  • TAMA PRM transportation (Tatsumi) -> done today.

Plan for the next week

Travel Plans

  • 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

VIS F2F 2/19

KAGRA F2F 2/21 - 23

  • Travel (Week of 2/22)

    • Takahashi:Wed - Thu (Fri: Akeno for the acceptance of IP from NIKHEF)

    • Shoda:Wed - Fri

    • Mark:
    • Fabian:

    • Okutomi:Wed - Fri

    • Fujii:Wed - Fri

    • Ishizaki:
    • Hirata:
    • Ohishi:

Other Mechanical Issues

  • Rotation angle of the PR3 mirror
    • 0.786deg counter clockwise from the line connecting the centers of the PR3 and BS chambers.

    • 0.619deg counter clockwise with respect to the chamber (schematic)

      • Currently the mirror is rotated by 0.65deg (measured at the time of the test hanging).

      • This is well within the actuation range of the traverser. -> Will not make any further adjustment.

  • #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)
  • #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
  • #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
  • Need to make Guradian script for PR3. Shoda + Fujii and Okutomi will write one after the mechanical installation is finished.
  • Watch dog system (Tanaka)
  • #LVDT distributor connector problem

    • Miyakawa-san circulated a design of the conversion cable (D9-D15): 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

Type-B

  • Task listKAGRA/Subgroups/VIS/TypeB/TaskList

    • Kick off meeting within February (Mark)
  • BS prism preparation (Mark)

    • 5mm prism drawing

    • Confirmed with Hirata-san that BS can use same 5 mm prism as SR (grooves, wire clearance all OK).
    • Confirmed with Tatsumi-san that not a big deal to use smaller BS prism as long as secondary position not changed.
    • Submitted 5 mm prism drawing to company that did LIGO HSTS prism (except grooves), waiting on response.
    • Second company that did LIGO groove cutting not interested in quoting - exploring other US companies.
    • Should contact Shinko-sha again (Takahashi)
  • Can we make SR wire breakers bigger ?

    • Check what happens if we widen the slit by 3.75mm and make a new M5 (Hirata) -> Result

      • Two concerns
        • The rework may bend the wing shaped parts.
        • The P.C.D. of the new screw holes may not coincide exactly with the other existing holes
      • Consult with Fukushima-san again. Takahashi will contact Fukushima-san

      • Do we need to widen the slits for PRC RMs ? -> Depends on how difficult it is to rework the RM.

      • Wider cuts will break the horizontal balance. Need to check how much compensation mass is reduced (Hirata) -> 2mm reduction will be necessary. We can do this.

  • Flag design (Mark)
    • Shorter flag is desirable ?

    • Mark will sort out the ideas and organize a specialized meeting.-> will present an updated version in the next meeting.

  • IP base clamp (Fabian): Picture -> Reduce the number of clamps-> Hirata-san finished 2D drawings. Trying to get quotation now.

  • Bread board spring (Takahashi): Hirata-san is getting quotations.
  • #BS Assembly Frame Design (Aso, Hirata)
  • #BS gluing jigs (Tatsumi)
  • #Not enough crane height problem (Hirata, Saito)
  • #BS clean bag (Aso)

Type A

  • Task list (Takahashi)

  • #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) -> done

  • #PR2 Wire breaker problem
    • Prism removal from PR2 (Hirose, Mark)
      • Not yet ready

Other

  • Safety
    • No incident
  • #GAS blade inspection by Virgo (Takahashi)
    • Shipped the blades. Will get results in 1-2 months.

Next meeting

2015/2/19 (Fri) 13:30 - @ Mitaka

KAGRA/Subgroups/VIS/VISMinutes20160212 (last edited 2016-02-13 06:23:04 by YoichiAso)