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  * Geophone performance results (Fabian)   * Take the geophone data again remotely on Monday (Fabian)
  * Find old calibration factors (Fabian)
  * Make the three-sensor correlation calculation to deduce the sensor noise (Fabain with Shoda)

Agenda/Minutes of the VIS Meeting on 2016/7/8

2016/7/8 13:30 - @ Room 210

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

Progress report

Schedule Chart (PDF,MPP)

Type-A (Takahashi)

  • Minutes of Type-A Meeting

  • Vacuum compatibility of the release sensor was checked by Saito-san.
  • Simulation
    • By the next VIS meeting. show the result of the simulation with BF damping
  • Pre-Isolator assembly location
    • CRY group is planning to build an additional clean booth in the KAGRA center area
      • Check when it will be available and until when it is available (Takahashi)
    • ATC ?: Ask Raffaele (Takahashi)
  • Start of the installation of Type-A will be delayed to January because of the delay in the clean booth construction.
  • EQ stop order
    • Need to order in August (as early as possible)
    • Call for bidding is necessary
    • Prepare 3D model by the end of July (Ishizaki)
    • Produce 2D drawings by the end of the 2nd week of August (Ishizaki, Sato)
    • Start talking to the company now (together with Type-Bp team) (Ishizaki, Shoda)
    • Start talking to the ICRR administration now (Ishizaki)
  • Dummy payload
    • Make a conceptual design by July 12 (Okutomi)
  • Transportation of items to the end and 2F
    • Need to take out the PI from the crate: careful planning is necessary
    • Coordinate with CRY for passing the CRY clean booth

Type-B (Mark)

  • Type B Past Week Summary
    • Mark did a Type B schedule presentation at the Extended Chiefs Meeting. It was decided to order a second assembly frame so that the BS/SR2/SR3/SRM installations can overlap more.
    • Mark and Hirata-san helped Mirapro construct the assembly frame (photos).

    • Mark and Hirata-san took the jacks and adapter plates off the frame, and cleaned them to remove as much of the original grease as possible. Takahashi-san re-greased them with vacuum grease.
    • Mark and Hirata-san wiped down the assembly frame and put the clean bag on it.
    • Saito-san, Ohishi-san and several people from Mirapro adjusted the position of the BS chamber.
    • Mark plugged the geophones back into the PR2 rack and checked that the repaired cable was working.
    • Fabian did more pre-assembly of the RM/IM/IRM.
    • Fabian designed modifications for the brackets on the security structure for immobilizing the IM, and Hirata-san did 2D drawings from them.
    • Takahashi-san ordered 10 mm diameter x 10 mm long magnets for the IM flags.
    • Mark inspected the SR2 section of the clean booth to see where SR2 assembly could be done. The slot in the ceiling for the crane runs in the ±X direction (at right angles to that for the BS), and there are suitable space on both the +X and the -X sides of the SR2 tank.
    • Hasegawa-san (of Hirose-san's lab) took delivery of the cup for removing the prisms on the dummy BS. It fits well.
    • Tatsumi-san ordered modifications to the BS gluing jig to make it easier to remove the pieces holding the flags after the flags are attached. The parts are expected Fri 7/8. He also ordered more EP30, but this won't arrive until the week of 7/18.

    • Hirata-san measured another filter and cleaned parts for Fabian
  • Type B ongoing issues
    • OSEMs
      • Akutsu-san is working to get wide-mouth OSEMs
    • Longer cables for BF->PI and SF->PI.

      • Connectors RECEIVED, cables being made.
    • 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)
      • Nail-head parts - RECEIVED.
    • Documents
  • To-do list during Mark's vacation
    • Apply grease to jacks for assembly frame (Takahashi)
    • Finish assembly of BS IM, RM and IRM (Fabian).
    • Weigh IM/RM/IRM (Fabian, Hirata)
    • Pack/ship IM/RM/IRM to Kamioka (Hirata/Fabian).
    • Analyze geophone data (Mark, Shoda)
    • Remove glue from dummy BS face (Fabian)
    • Remove prism from dummy BS (Hirose, Fabian?)
    • Reglue flags and prisms (Tatsumi, Fabian)
    • Buy wire for BS and RM (Hirata)
    • Clean wire for BS and RM (Hirata)
    • 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)
    • 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)

  • Type-Bp modification 3D Drawings
    • Saito-san implemented the Virgo design into the Type-Bp design. (I asked him a little more updates.)
    • We have some questions about F7 LVDTs.
      • Coil specification
      • Its design (Slits on the coils. The place where the wires suppose to come out.)


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  • Next meeting will be on 14th from 4PM


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  • [A/I] Structual analysis

  • Installation related issue
    • Technical document is written by Shoda.
    • Does the Type-B team use the hanging frame for iKAGRA PR2?
    • [A/I] Shoda will decide the meeting date will Mirapro.

IMMT (Ohishi)

  • Schedule
    • Finally succeeded in installing Windows and Microsoft Project.
    • Asking a company to make a quotation for writing 3D CAD drawing of IMMT suspensions from 2D parts plans.
  • BS chamber was relocated (6th and 7th July).
    • Measurement with tape measure shows that now the chamber center is (x, y) = (0mm, +2mm) based on the floor points.


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  • Rotation: CCW 0.15deg.


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Watchdog system (Tanaka)

  • Changes the scale of the vertical axis(for PhotoMos Relay).PDF

Safety

  • Any issue ?

Discussion

  • Inertial Sensors for Type-B (Mark, Fujii)
    • Take the geophone data again remotely on Monday (Fabian)
    • Find old calibration factors (Fabian)
    • Make the three-sensor correlation calculation to deduce the sensor noise (Fabain with Shoda)
  • What to do with the SR preparation
    • Call for shifts ?

Site work plan for the next week

  • Mon: Takahshi (witness/supervise the installation of a cross-tube)
  • Tue:
  • Wed:
  • Thu:
  • Fri:

Travel Plans

  • Travel (Week of 7/11):
    • Takahashi:11 (Cross tube installation)

    • Shoda:
    • Mark:
    • Fabian:
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Sato:
    • Ohishi:
  • Travel (Week of 7/18):
    • Takahashi:
    • Shoda:
    • Mark:
    • Fabian:
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Sato:
    • Ohishi:

Mark is away: July 8-20

Next meeting

2016/7/15(Fri) 13:30 - (Aso will be absent)

KAGRA/Subgroups/VIS/VISMinutes20160708 (last edited 2016-07-08 21:13:44 by YoichiAso)