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Deletions are marked like this. Additions are marked like this.
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Participants: Participants:Hirata, Takahashi, Okutomi, Mark, Ishizaki, Tanaka, Sato, Shoda, Fabian, Aso, Ohishi
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Schedule Chart ([[https://www.dropbox.com/s/in8snejffra66as/VIS%20Overall%20Schedule%2020160720.pdf?dl=0|PDF]],[[https://www.dropbox.com/s/byl5lkwhp0p25kb/VIS%20Overall%20Schedule-160720.mpp?dl=0|MPP]]) Schedule Chart ([[https://www.dropbox.com/s/in8snejffra66as/VIS%20Overall%20Schedule%2020160720.pdf?dl=0|PDF]],[[https://www.dropbox.com/s/byl5lkwhp0p25kb/VIS%20Overall%20Schedule-160720.mpp?dl=0|MPP]]) -> Something wrong with the Project Server. Aso will try to fix it.
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  * Translation mode is damped by F0 control. Yaw mode is damped by BF control. The mode with node at BF is not damped well.
 * Size of LVDT for BF damping will be decided after checking the sample from VIRGO.
 * Large amount of torsion drift would be compensated by motor rotation on the top filter.		   * Will calculate the requirements for the sensor noise
  * Will calculate the requirements for the actuator coupling and coil driver noise
 * Type-A installation procedure review in the second week of August.
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[[KAGRA/Subgroups/VIS/MeetingNAOJ]]

 * Discussion
  * Next week, Type-B team will stay in Tokyo to finish remaining tasks
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  * Fabian took photos of the cleanroom in the ATC to help decide whether it is a good place to assemble PIs for Type A/B.
  * Hirata-san ordered and received wire for the BS and RM (will be cleaned 7/19).
  * Hirata-san received remachined locking parts for the IM (will be cleaned 7/19).
  * Hirata-san ordered additional Misumi parts to be used with the IM locking parts.
  * Fabian and Hirata-san weighed the masses that they've been constructing in the cleanroom and found a 600 g discrepancy from the Inventor (too light) for the IM. Although the density assumed in the Inventor agrees with spec sheet values, it doesn't match the parts. Adjusting the density to match a few key parts reduces the discrepancy to 60 g. More investigation is planned.
  * Hirata-san ordered a medium-capacity scale to weigh the individual parts more precisely and help locate the discrepancy.
  * Hirata-san organized to do a fit/function test of the BS winches and training session with Ikenoue-san of ATC on 7/25. Unfortunately, Ikenoue-san later advised that they clamp parts should be redesigned to allow for the changed wire diameters.
  * Hirose-san and his team successfully removed the misglued prisms from the dummy BS.
  * Fabian travelled to Kashiwa and removed most of the glue from the face of the dummy BS (where the flags had been). There is still some adhesive remaining on both the face and barrel, which will require more work in a second trip.
  * Shoda-san took a suitable segment of geophone noise data for analysis. Fabian will track down the calibration factors.
  * Hirata-san worked on 2D drawings for the PI cable clamps and the magnetic damper for the lower breadboard.
  * Hirata-san worked on the 3D assembly for SR2.		   * Hirata-san wiped one set each of wires for the BS and RM (additional sets pending).
  * Hirata-san washed remachined locking parts for the IM and screws for jacks.
  * Hirata-san liaised with Ikenoue-san of ATC to get new winch parts designed for the new wire thicknesses. Ikenoue-san provided updated designs for checking.
  * Hirata-san worked on the Inventor 3D assembly of the SR2.
  * The scale for checking the masses of the IM parts arrived.
  * Fabian and Hirata-san assembled the IRM and identified an issue with the Teflon-coated lock screws between the IM and IRM. The screws were slightly too large, and correcting the size with a die caused large flakes of the black coating to come off. (These screws were ordered before the current screw policy was instituted.) Hirata-san will order SDC-coated screws from Misumi and have additional machining done on them.
  * Fabian tracked down the calibration factors for the geophones and generated a calibrated [[attachment:Geophone_Kamioka.png|plot]].
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   * Akutsu-san is working to get wide-mouth OSEMs
  * Longer cables for BF->PI and SF->PI.
   * Connectors RECEIVED, cables being made.		    * Akutsu-san is working to get wide-mouth OSEMs ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=1853|2 assembled]]; first 4 expected to be assembled and washed by 8/8)
  * Longer cables for BF->PI and SF->PI ORDERED.
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   * BS Assembly Procedure [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235| E1504235]], [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|E1504235 draft]]    * BS Assembly Procedure [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235|E1504235]], [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|E1504235 draft]]
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  * Apply grease to jacks for assembly frame (Takahashi) - DONE
  * Finish assembly of BS IM, RM and IRM (Fabian) - DONE
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  * Remove prism from dummy BS (Hirose, Fabian?) - DONE
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  * Buy wire for BS and RM (Hirata) - DONE
  * Clean wire for BS and RM (Hirata) - 7/19		   * Clean wire for BS and RM (Hirata) - DONE
  * Get new winch parts for new wire diameters - design received from Ikenoue-san
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   *'''Clamp parts are not fit the new wire diameter. Hirata will ask Ikenoue-san to make new parts.'''
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  * Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - just started.   * Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - ONGOING.
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  * Write more of main assembly procedure (Mark)    * Write more of main assembly procedure (Mark)
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 * Type-Bp modification 3D drawings
  * Checked the mass
  * Roughly checked the distorsion (in order to check if there is a possibility to increase the weight on the BF)
 * F7 LVDT
  * Our design will be fixed with the current Virgo design. We will make some adapters to mount the new design LVDT.
  * Virgo will send us the information of the coil specification (Not yet recieved).
  * Type-A team will decide the design of our LVDTs.
  * '''Make schedule to product the coils with Type-A team'''
 * Installation related issues
  * Talked with Mirapro. Recieved the first virsion of the assembly frame.
   Because of the poor accesibility, I asked the update.
 * Simulation
  * The information from iKAGRA PR3 is being summarized: [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5382|JGWdoc]]		  * Basic Design Review [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/TypeBp/meeting160721|minute]]
 * Contacted with some companies. (Cost estimate will be done by ATC.)
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 * Made a schedule.
 * 3D model
   * Received a quotation. Discussing details.		  * In negotiation with a company for CAD modeling
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 * Prototype boards are ready now.
 * Programming the software using the boards.		  * Working on the software
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 * Not any issue  * No issue
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 * Inertial Sensors for Type-B (Fabian): no progress  * Inertial Sensors for Type-B (Fabian)
  * Fabian's plot https://dl.dropboxusercontent.com/u/99018438/Geophone_Kamioka.png
  * Plot the theoretical noise of geophone
 * Wide OSEM production and test plan (Akutsu, Aso)
  * Steps
   * Test assemble a few (Akutsu)
   * Noise check (Type-B team)
    * Change the supply current of a satellite amplifier (find the optimal value for the wide OSEM).
    * Calibration
    * Noise measurements
    * Deadline for the noise check: by the end of September
    * Wide OSEM noise should be checked in Kamioka using the digital system. Type-B team will do it when they come to Kamioka.
    * Akutsu will give Type-B team a wide OSEM and test setup.
   * Mass production of wide OSEMs (Akutsu)
    * Assembly (call for shift)
    * Wash (Hirata ?)
    * Calibration and simple noise check(call for shift)
    * A/I: Akutsu will write an assembly procedure document. Make a call for shift to start the mass production asap.
   * Ship to Kamioka
   * Change the supply current of the satellite amplifiers (talk to AEL: Aso)
 * LVDT test
  * Takahashi and Shoda will discuss about this
  * Points to be clarified: purpose of the test (what kind of information we want to obtain to design the new LVDTs ?)
  * Deadline for the new LVDTs: the end of August.
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 * Travel (Week of 7/18):
  * Takahashi:
  * Shoda:
  * Mark:
  * Fabian: 19(Kashiwa)
  * Okutomi:
  * Fujii:
  * Ishizaki:
  * Hirata: 19(Kashiwa)
  * Sato:
  * Ohishi:
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  * Mark: 25-29 ?
  * Fabian: 25-29 ?		   * Mark: Kashiwa on some day
  * Fabian: Kashiwa on some day
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Mark is away: July 8-20

Visit by ATC on July 20		  * Travel (Week of 8/1):
  * Takahashi:
  * Shoda:
  * Mark: 1 - 5 ?
  * Fabian: 1 - 5 ?
  * Okutomi:
  * Fujii:
  * Ishizaki:
  * Hirata:
  * Sato:
  * Ohishi:
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2016/7/22(Fri) 13:30 -  2016/7/29(Fri) 13:30 -

Agenda/Minutes of the VIS Meeting on 2016/7/22

2016/7/22 13:30 - @ Room 210

Participants:Hirata, Takahashi, Okutomi, Mark, Ishizaki, Tanaka, Sato, Shoda, Fabian, Aso, Ohishi

Progress report

Schedule Chart (PDF,MPP) -> Something wrong with the Project Server. Aso will try to fix it.

Type-A (Takahashi)

  • Minutes of Type-A Meeting

  • Simulation (Okutomi)
    • Will calculate the requirements for the sensor noise
    • Will calculate the requirements for the actuator coupling and coil driver noise
  • Type-A installation procedure review in the second week of August.

Type-B (Mark)

KAGRA/Subgroups/VIS/MeetingNAOJ

  • Discussion
    • Next week, Type-B team will stay in Tokyo to finish remaining tasks
  • Type B Past Week Summary
    • Hirata-san wiped one set each of wires for the BS and RM (additional sets pending).
    • Hirata-san washed remachined locking parts for the IM and screws for jacks.
    • Hirata-san liaised with Ikenoue-san of ATC to get new winch parts designed for the new wire thicknesses. Ikenoue-san provided updated designs for checking.
    • Hirata-san worked on the Inventor 3D assembly of the SR2.
    • The scale for checking the masses of the IM parts arrived.
    • Fabian and Hirata-san assembled the IRM and identified an issue with the Teflon-coated lock screws between the IM and IRM. The screws were slightly too large, and correcting the size with a die caused large flakes of the black coating to come off. (These screws were ordered before the current screw policy was instituted.) Hirata-san will order SDC-coated screws from Misumi and have additional machining done on them.

    • Fabian tracked down the calibration factors for the geophones and generated a calibrated plot.

  • Type B ongoing issues
    • OSEMs

      • Akutsu-san is working to get wide-mouth OSEMs (2 assembled; first 4 expected to be assembled and washed by 8/8)

    • Longer cables for BF->PI and SF->PI ORDERED.

    • SR machining test ongoing.
    • Lower breadboard stuff
      • Installation to be incorporated into the procedure document. Mark/Takahashi to discuss.
      • Breadboard springs (in manufacture, expected end of July)
    • Documents
  • To-do list during Mark's vacation
    • Weigh IM/RM/IRM (Fabian, Hirata) - DONE but anomalies found.
    • Pack/ship IM/RM/IRM to Kamioka (Hirata/Fabian).
    • Analyze geophone data (Fabian/Shoda) - data taken by Shoda-san; Fabian to find calibration factors.
    • Remove glue from dummy BS face (Fabian) - partly done.
    • Reglue flags and prisms (Tatsumi, Fabian)
    • Clean wire for BS and RM (Hirata) - DONE
    • Get new winch parts for new wire diameters - design received from Ikenoue-san
    • Do fit/function test of winches (Fabian/Hirata)
    • Ship winches to Kamioka (Hirata/Fabian)
    • Work on BS simulation (Fabian)
    • Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - ONGOING.
    • Write more of payload assembly procedure (Fabian)
    • Write more of main assembly procedure (Mark)
  • Longer term to-do list
    • Do BS Simulink model (Mark, Kokeyama)
    • Do 2D drawings of SR2 parts (Hirata)
    • Redesign SRx IM wire clamps for larger prisms, remachined RMs.
    • Order SRM/PRM parts (Hirata/Shoda)
    • Order SRx fasteners (Hirata)
    • Check SR RM machining test progress (Hirata)

Type-Bp (Shoda)

  • Basic Design Review minute

  • Contacted with some companies. (Cost estimate will be done by ATC.)

IMMT (Ohishi)

  • In negotiation with a company for CAD modeling

Watchdog system (Tanaka)

  • Working on the software

Safety

  • No issue

Discussion

  • Inertial Sensors for Type-B (Fabian)
  • Wide OSEM production and test plan (Akutsu, Aso)
    • Steps
      • Test assemble a few (Akutsu)
      • Noise check (Type-B team)
        • Change the supply current of a satellite amplifier (find the optimal value for the wide OSEM).
        • Calibration
        • Noise measurements
        • Deadline for the noise check: by the end of September
        • Wide OSEM noise should be checked in Kamioka using the digital system. Type-B team will do it when they come to Kamioka.
        • Akutsu will give Type-B team a wide OSEM and test setup.
      • Mass production of wide OSEMs (Akutsu)
        • Assembly (call for shift)
        • Wash (Hirata ?)
        • Calibration and simple noise check(call for shift)
        • A/I: Akutsu will write an assembly procedure document. Make a call for shift to start the mass production asap.
      • Ship to Kamioka
      • Change the supply current of the satellite amplifiers (talk to AEL: Aso)
  • LVDT test
    • Takahashi and Shoda will discuss about this
    • Points to be clarified: purpose of the test (what kind of information we want to obtain to design the new LVDTs ?)
    • Deadline for the new LVDTs: the end of August.

Site work plan for the next week

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

Travel Plans

  • Travel (Week of 7/25):
    • Takahashi:
    • Shoda:
    • Mark: Kashiwa on some day
    • Fabian: Kashiwa on some day
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Sato:
    • Ohishi:
  • Travel (Week of 8/1):
    • Takahashi:
    • Shoda:
    • Mark: 1 - 5 ?
    • Fabian: 1 - 5 ?
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Sato:
    • Ohishi:

Next meeting

2016/7/29(Fri) 13:30 -

KAGRA/Subgroups/VIS/VISMinutes20160722 (last edited 2016-07-27 14:40:36 by YoichiAso)