Differences between revisions 11 and 12
⇤ ← Revision 11 as of 2016-06-03 15:34:00 →
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← Revision 12 as of 2016-06-03 16:43:57 → ⇥
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Editor: YoichiAso
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Deletions are marked like this. Additions are marked like this.
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 * Meeting format (Aso)
  * Two main parts: progress tracking		  * New meeting format (Aso)
  * Each team will have individual meetings every week (F2F)
  * Each team will report the progress at the plenary VIS meeting.
   * Progress is checked against the schedule charts to be submitted by the team leaders by June 8th.
   * The schedule chart should be updated whenever necessary
  * After the progress check, important issues relevant to entire VIS team will be discussed
   * The topics will be picked by Aso
   * Everyone is welcome to suggest topics to Aso
  * Will start the new format from the next week.
Line 21: Line 28:
  * Week of July 4th
  * Miyoki-san		   * Need check the transportation path of large items to the 2F of the end stations.
  * Takahashi, Ishizaki, Sato will come to Kamioka in the week of July 4th contingent on Miyoki-san's availability
Line 24: Line 31:
  * Larger reflector will be prepared by Akutsu-kun (get quotes)   * Larger reflector will be prepared by Akutsu-kun (will get quotes soon)
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   * Geophone noise measurement is necessary.
   * Will do it in June		    * If the noise of the Geophones is as described in the slides, using Geophone should be fine.
   * However, the real noise of the Geophones is not well known. A measurement in Kamioka is necessary.
   * '''Shoda or Fujii will do the measurements along with the NIKHEF accelerometers sometime in June'''
Line 35: Line 43:
    * '''Will present the results in the next VIS meeting'''
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  * What is the plan for SR Type-B
  * Takahashi and Mark will start the discussion on'''.'''
  * SR assembly by Sato-san possible ?
  * Takahashi will make more detailed schedule for PI assembly
 * Bottom filter local sensor/actuator for Type-A
  * Where to start<<BR>>
   * '''Start from checking the space available for the sensor/actuators (Sato) -> No update'''
  * #Fix EQ stop at the bottom: modify the design of the bottom part of the EQ stop to be tightly fit into the tube (Ishizaki)		   * Need to make a plan for the assembly of the SRC PI.
  * If possible assembly by Sato-san is better as he will do it for Type-A too.
  * Takahashi will make more detailed schedule for PI assemblyto see if Sato-san can do the SRC work.
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  * SEO is now considering if we can use the iKAGRA ETMs for this.
  * iKAGRA ETM may be used ?
 * Bottom Filter LVDT		   * SEO is now considering if we can use the iKAGRA ETMs for this or not.
 * Bottom Filter LVDT -> '''To be discussed at the next meeting'''<<BR>>
Line 52: Line 55:
  * Status ? (Raffaele) -> Continue   * Status ? (Raffaele)
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  * Flexible circuit status ?-> asked for quotation to the company (6/2)   * Flexible circuit status ?-> asked for quotation to the company (6/2).
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 * What are necessary in the next few weeks ?<<BR>>
  * The latest list
  * Add satellite boxes for IMMT (2 of them)
  * Cables need to be produced		  * List of requested electronics from VIS
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5193|The latest list]]
  * '''Need to add satellite boxes for IMMT (2 of them) to the list (Takahashi)'''
  * IMMT OSEM cables will be different from other OSEMs
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  * Fabian prepared a work space in the ATC cleanroom and moved in nearly all the parts for the dummy BS, RM, IM and IRM.
  * Fabian finally got perfect agreement between the Mathematica and Matlab models of the BS. (The wire thicknesses had in µm instead of mm, leading to some modes off by 1E3.) See [[attachment:FabianMathMat20160526.pdf]].
  * Hirata-san remeasured the SF for the BS. He noted that the cap went on and came off easily (unlike some other filters) - good news. He also confirmed the blade configuration (which was different from in Inventor, but should not cause issues with the assembly frame).
  * Hirata-san worked on final details of the Mirapro order for the assembly frame.
  * Hirata-san and Takahashi-san washed a large batch of parts.
  * Tatsumi-san will glue flags, sapphire primary prisms and metal secondary prisms to the dummy BS some time in the week of 6/8. Fabian and possibly Mark and/or Hirata-san will travel to ICRR to help and observe.		   * Fabian worked on IM and dummy BS assembly: [[https://photos.google.com/share/AF1QipMNVSExyP3TuyhK4s_VD-ARDlNoCPCf13ZDbHUlwOw14AKgj4XUe0vYg27dQ12icQ?key=SjJ0dXJ1bjN2OGVCN3d6RnoySEtFSjVJUmVwSlZR|photos1]], [[https://photos.google.com/share/AF1QipPQdoB5vYN1VcD32TkA4QSGldODvKRwiT5h-m122ahSpWmFyyrO5MX-9ajL1LeRIg?key=VFFuUVktcEtlMURQUldhZUlRcGFhbzNDeU5IN3NB|photos2]]
   * A hole in a picomotor holder was too small. ATC staff solved this isue quickly and Hirata-san cleaned the piece.
   * Some ballast discs for the dummy optic were dirty (seen by visual inspection). Hirata-san cleaned them.
   * Some arrows were cleaned from the mirrors for the dummy optic.
  * Hirata-san worked on checking Mirapro's assembly frame design - some minor issues with rail system found.
  * Hirata-san measured another filter.
  * Hirata-san washed a large batch of parts.
  * All parts for gluing of dummy BS are in hand. We arranged with Tatsumi-san to glue magnets at Mitaka on 6/6, glue flags at Kashiwa on 6/8, and inspect bonds and bring dummy BS back to Mitaka 6/13.
  * Mark worked on solutions to allow a [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/TypeB/dummyBS|larger mirror on dummy BS]]. After discussions with Simon and Akutsu-san we decided to go with a stainless steel plate solution. The gluing can go ahead and we can attach the plates later.
  * Mark worked on list of items for purchase in FY2016.
  * Mark worked on finding connectors for vacuum-compatible geophone adapters.
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  * BS assembly frame contract: being made. delivery date July 8.
  * Review: send doodle poll
 * IM, RM, IRM, dummy BS assembly
  * Fabian prepared space in the clean room used for the SF assembly and moved in nearly all parts.
  * Still need to find SDC-treated hook for maraging wire in IM.
  * Will start assembly 5/30
 * Wires
  * Fabian continued analysis of RM wire thickness versus mode frequency: [[https://onedrive.live.com/redir?resid=1447B05D5B571A84!442&authkey=!AKrjBW2W8vMKyAY&ithint=file,pdf|link]], [[https://onedrive.live.com/redir?resid=1447B05D5B571A84!421&authkey=!ALZY-tFtMCYI9Pw&ithint=file,pdf|another link]],[[https://pfalig.bn1301.livefilestore.com/y3mT7oHnuBfD9_7Ata6H90opTVY5IIIm78MQ8Rl-lChfSUtGhGiEP-mlB1rQuzliimi-pmL1JfYTKCUY_Tgan0Bfa2jq5EeSXWiCracw_5ulsm2iuf6RHJcz0ot34DaeWqdUjFnU6fILnyau69WFkBmUcTwfGYBNwSrs27eyK-jc90/RM_wire.pdf?psid=1|yet another link]] (From last week: [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5106|T1605106]] /[[https://onedrive.live.com/view.aspx?resid=1447B05D5B571A84!354&ithint=file,docx&app=Word&authkey=!AO5CHNP3xlO5RjY|draft]])
 * Can we make SR wire breakers bigger?
  * Fukushima-san has not yet started the work. He will start soon (as of 5/27).
 * Flags, Metal Prisms, Sapphire prisms RECEIVED
 * Mirror box (Tatsumi)
  * Tatsumi-san is planning to use mirror box to put flags etc on dummy BS the week of 6/8. Fabian+1 will help/observe.
 * An extra structure attached to the EQ stop to prevent tipping over of the BS.
  * Will consider if we can make it to the test hanging. But not critical for the test hanging.
  * No action since last week.
 * Not enough crane height problem (Hirata, Saito)
  * No action since last week
 * EQ stop screws, extensions and lock nuts RECEIVED
 * Ballast masses for payload
  * Initial batch received - ordered extra smaller ones to allow for adjustments.
 * Lower breadboard stuff
  * Assembly procedure
   * '''Need to be incorporated into the procedure document. Discuss with Takahashi (Mark)'''
  * Breadboard spring bases and associated cable clamps RECEIVED
  * Breadboard springs (in manufacture)
  * Damper ring mods RECEIVED
  * Nail-head parts: quote from Mirapro received, not urgent, will be combined with assembly frame order.
 * BS Assembly Frame Design (Mark, Hirata)
  * Final assembly frame quote received; is being extended to included lower breadboard part modifications.
 * Clean bag
  * Ordered - expected 6/8.
 * 2D and 3D CAD
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5035|E1605035 VIS Document and Drawing Tree (BS)]]
 * Electronics
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3600|JGW-D1503600 - BS Suspension Cabling]]
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5111|E1605111 BS Suspension Electronic Items List]]
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3901|D1503901 In-Vacuum Cable Detail]]
  * Item list and timetable was given to Miyakawa-san - some corrections received and added to schematic but not yet posted.
  * Status on AEL boxes OK according to Miyakawa-san.
  * Signal generator and cable to be used for BS test. May order NIKHEF cards later if concern about AC-driven units in racks.
  * Need to get new longer versions of some previously ordered BF-PI and SF-PI cables (Takahashi).
  * Need to check previously ordered TM-BF and IM-BF OSEM cables have been flipped (Takahashi).
  * Decided to hand-make cables for geophones because previously ordered cables have no conductor on pin 5.
  * Stepper drive box (requested by Sekiguchi-san [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3385|T1503385]]) is being designed, should be ready in time.
 * Procedure documents
  * Mark worked on BS Assembly Procedure [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|E1504235 draft]]		   * BS assembly frame contract: ordered. delivery date = July 8.
  * '''Review: send doodle poll (Mark)'''
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  * Discussing with Miyoki-san (Takahashi, Aso): clean crane ?   * Discussing with Miyoki-san (Takahashi, Aso)

VIS Meeting on 2016/6/3

2016/6/3 13:30 -

Room 210

Participants:Takahashi, Sato, Ishizaki, Mark, Hirata, Fujii, Fabian, Aso, Shoda, Akutsu

Overall Schedule

  • The current overall schedule chart.

iKAGRA related activities

PR3

  • PR3 post-run work status (Fujii)
    • TF and Q measuremnts were done. Now analyzing the data.

bKAGRA preparation

Important Issues

  • New meeting format (Aso)
    • Each team will have individual meetings every week (F2F)
    • Each team will report the progress at the plenary VIS meeting.
      • Progress is checked against the schedule charts to be submitted by the team leaders by June 8th.
      • The schedule chart should be updated whenever necessary
    • After the progress check, important issues relevant to entire VIS team will be discussed
      • The topics will be picked by Aso
      • Everyone is welcome to suggest topics to Aso
    • Will start the new format from the next week.
  • Site check for the preparation of Type-A installation (Aso)
    • Need check the transportation path of large items to the 2F of the end stations.
    • Takahashi, Ishizaki, Sato will come to Kamioka in the week of July 4th contingent on Miyoki-san's availability

  • BS dummy mirror design (Mark)

    • Larger reflector will be prepared by Akutsu-kun (will get quotes soon)

  • Accelerometers for IP

    • Is Geophone too noisy for innertial damping in Kamioka ? (Shoda) Slides

      • If the noise of the Geophones is as described in the slides, using Geophone should be fine.
      • However, the real noise of the Geophones is not well known. A measurement in Kamioka is necessary.

      • Shoda or Fujii will do the measurements along with the NIKHEF accelerometers sometime in June

    • NIKHEF accelerometers for BS
      • Test status (Fujii)
        • Resonant freq. and Q of the accelerometer were shifted from the previous measurements (still a mystery)
        • Did ring down measurements
        • Necessary parameters to convert the output to m/rtHz are obtained.
        • Still analyzing the data

        • Will present the results in the next VIS meeting

    • #Which accelerometers for SR ?
      • # Buy from NIKHEF ? How much is the cost ?
      • # Get the design from NIKHEF and produce them in Japan (ATC) ?

  • Pre-isolator assembly and tests

    • Need to make a plan for the assembly of the SRC PI.
    • If possible assembly by Sato-san is better as he will do it for Type-A too.
    • Takahashi will make more detailed schedule for PI assemblyto see if Sato-san can do the SRC work.

  • Dummy payload design for Type-A

    • SEO is now considering if we can use the iKAGRA ETMs for this or not.

  • Bottom Filter LVDT -> To be discussed at the next meeting

    • Virgo people wants to produce ones for us.
    • Status ? (Raffaele)
  • #Assembly frames
    • We need to combine things into one contract

    • Type-B assembly frame: order immediately (Takahashi)

Common Issues

  • Wide OSEM production (Akutsu)

    • Flexible circuit status ?-> asked for quotation to the company (6/2).

Electronics

  • List of requested electronics from VIS

    • The latest list

    • Need to add satellite boxes for IMMT (2 of them) to the list (Takahashi)

    • IMMT OSEM cables will be different from other OSEMs
  • #Watch dog system (Tanaka)
    • photo-MOS relay switch resistance fluctuation
      • Noise requirement for the resistance fluctuation is necessary (Aso)
        • If we require the resistance noise to be smaller than DAC noise, the allowed fluctuation is 10^-7 Ohm/sqrt(Hz)@10Hz.
        • Asking Michimua-kun to calculate the requirements from the suspension response.

      • Tanaka measured the photo-MOS relay resistance fluctuation-> 37mOhm RMS upper limit

        • Will make spectrum of the resistance fluctuation.

Type-B

  • KAGRA/Subgroups/VIS/TypeB

  • Task list/schedule

  • Type B Past Week Summary

    • Fabian worked on IM and dummy BS assembly: photos1, photos2

      • A hole in a picomotor holder was too small. ATC staff solved this isue quickly and Hirata-san cleaned the piece.
      • Some ballast discs for the dummy optic were dirty (seen by visual inspection). Hirata-san cleaned them.
      • Some arrows were cleaned from the mirrors for the dummy optic.
    • Hirata-san worked on checking Mirapro's assembly frame design - some minor issues with rail system found.
    • Hirata-san measured another filter.
    • Hirata-san washed a large batch of parts.
    • All parts for gluing of dummy BS are in hand. We arranged with Tatsumi-san to glue magnets at Mitaka on 6/6, glue flags at Kashiwa on 6/8, and inspect bonds and bring dummy BS back to Mitaka 6/13.

    • Mark worked on solutions to allow a larger mirror on dummy BS. After discussions with Simon and Akutsu-san we decided to go with a stainless steel plate solution. The gluing can go ahead and we can attach the plates later.

    • Mark worked on list of items for purchase in FY2016.
    • Mark worked on finding connectors for vacuum-compatible geophone adapters.

    • Mark worked more on E1504235 BS Assembly Procedure (Draft on OneDrive)

  • Discussions

    • BS assembly frame contract: ordered. delivery date = July 8.

    • Review: send doodle poll (Mark)

Type A

  • Task list (Takahashi) -> working on more detailed one.

  • Clean booth design for 2F https://www.dropbox.com/s/8bi9ij91radmpt5/IXYV160512.pdf?dl=0

    • Sketch

    • Discussing with Miyoki-san (Takahashi, Aso)
  • Prototype test of the EQ stop
    • Cleaned the ATC room for starting the test
  • Frame lock: made a design change to make it stronger. Will order it next week.
  • Sensors to monitor the release of the SFs from the EQ stop.
  • Type-B Standard Filters preparation
    • Will start the measurement of the SFs for Type-A from the next week.
  • The next Type-A meeting will be on 6/9.
  • #Simultion (Okutomi)
  • #Local sensors for BF

Type-Bp modification

  • Modification for bKAGRA

    • Saito-san of ATC produced the first draft design

      • First draft is provided. -> Under checking

      • First draft of the installation procedure & Checking if there is any conflict (Fujii)

    • Still waiting for the LVDT design from Virgo
    • Full CAD model of the original Type-Bp is almost done (Shoda)
    • Fujii-kun is working on the installation procedure document
  • A/I till next week
    • First draft of the installation procedure (Fujii)
    • Full CAD model of the original Type-Bp and the new Type-Bp (Shoda)

Site work plan for the next week

  • Mon:
  • Tue:
  • Wed:
  • Thu:
  • Fri:

BS crane will not be available: 13th -14th of June

Travel Plans

  • Travel (Week of 6/6)
    • Takahashi:
    • Shoda:
    • Mark:
    • Fabian:
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Ohishi:
    • Sato:
  • Travel (Week of 6/13):
    • Takahashi:
    • Shoda:
    • Mark:
    • Fabian:
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Ohishi:

Mark is away: July 8-20

Other

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

Next meeting

2016/6/10(Fri) 13:30 -

Next VIS F2F 6/17

Next next F2F 7/8

KAGRA/Subgroups/VIS/VISMinutes20160603 (last edited 2016-06-03 16:45:29 by YoichiAso)