Differences between revisions 60 and 61
Revision 60 as of 2016-08-17 21:06:01
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Revision 61 as of 2016-09-02 13:41:50
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Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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 * Type B Past Week Summary - week of 8/8
  * Mark, Fabian and Hirata-san cleaned glue off the dummy BS, attached Akutsu-san's new SS mirror plates, reglued the flags and prisms, and removed the gluing hardware, so the dummy BS is ready for shipping. Tatsumi-san's refinements to the tooling (especially the new flag holders) worked very smoothly. We were more generous with the glue and much more careful with the alignment of the prisms to the barrel, both during rehearsal and the final gluing.
  * Mark wrote up the gluing procedure as a new document [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5505| E1605505]]. (The original plan was to do an addendum to Tatsumi-san's PR gluing procedure JGW-E1504248, but there was too much material.)
  * Hirata-san organized with Takahashi-san to get the BS payload masses shipped to Kamioka. They will go in an air-ride truck on Wed 8/17 together with a load of Type A stuff, and will arrive early on Thu 8/17.
  * Hirata-san shipped the collection of Type B fasteners to Kamioka, to arrive Mon 8/15.
  * Hirata-san measured another standard filter and cleaned various parts for people.
  * Hirata-san worked on the SR2 Inventor assembly. He spotted a problem with the orientation: given the position of the pistons in the SR2 tank (according to the assembly from Mirapro), mating the standard Type B SR chain and the chamber in the natural way puts the optic at 90° to what it needs to be. A similar problem was found in the Type B Test at Mitaka, and it was eventually worked around, but with some difficulty. Hirata-san will investigate the best way of making a correction.
  * Komori-kun, Kuwahara-kun and Akutsu-san calibrated an initial batch of 7 wide-mouthed OSEMs.
  * Fabian worked on the payload assembly procedure.
 * Type B Past Week Summary - week of 8/15
  * Hirata-san shipped the fasteners to Kamioka, and they arrived Tuesday.
  * Hirata-san shipped a large load of Type A and Type B items, which Mark and Fabian received on Thursday 8/18.
  * Akutsu-san shipped the first 7 OSEMs.
  * Hirata-san and Ikenoue-san did a successful function test of the BS winches with the new clamp parts for the thicker wires.
  * Mark, Fabian and Zhao-kun did a major cleanup and reorganization of the BS clean booth at Kamioka, putting PR2 stuff in boxes, vacuuming and wiping, and making space.
  * Mark, Fabian and Zhao-kun set the crossbeams of the assembly frame to their correct positions and installed the EQ stop ring on top, ready to receive the IM. This is the first actual installation activity for Type B.
  *
 * Type B Past Week Summary - weeks of 8/22 and 8/29
  * Fabian, Mark, Zhao-kun and Yokogawa-kun did BS installation at Kamioka:
   * Weighed the BF, SF and dummy BS (in mirror box).
   * Moved the geophones onto the optical table, clamped them down and took another time series for analysis.
   * Aligned the IM, installed the extra trim masses, tested the picos and weighed the whole assembly.
   * Placed vacuum flanges and cleaned D-Sub cables ready for routing to the rack.
   * Realigned and immobilized the optical table (which had been bumped).
   * Made safety improvements on the second floor (new safety rail, new arrangement of floor pieces, caution tape around holes)
   * Suspended the dummy BS. Currently however it is not hanging correctly, but is off in the +Y direction by several mm relative to the mirror box.
   * We set up the BS OL, using one of the wheeled chests of drawers as a base and using the OL breadboard from the PR2 assembly frame.
  * Hirata-san made a 3D assembly model for SR2 and added the optical design.
  * Hirata-san worked with Uchiyama-san to solve the 90° rotation problem. It turns out the "box" part with the pistons can be rotated, so we can build the SR2 according to the original design.
  * Hirata-san investigated the puzzle of the BF-IM maraging rods, where the 2D drawings and 3D CAD do not agree. Fortunately the actual parts seem to agree with the 3D CAD.
  * Hirata-san washed 3 OSEMs (last of initial 10 for BS) and parts for two BFs (for Type A). He moved the BF parts into the clean room and will assemble them with ATC staff from next Wednesday 9/7.
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  * Longer cables for BF->PI and SF->PI still not received, Takahashi-san to check status.   * Longer cables for BF->PI and SF->PI - RECEIVED
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  * Decide position of BS rack (in consultation with Miyakawa-san) - document in progress: [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5413| T1605413]]   * Decide position of BS rack - DONE

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

  • Type B Past Week Summary - weeks of 8/22 and 8/29
    • Fabian, Mark, Zhao-kun and Yokogawa-kun did BS installation at Kamioka:
      • Weighed the BF, SF and dummy BS (in mirror box).
      • Moved the geophones onto the optical table, clamped them down and took another time series for analysis.
      • Aligned the IM, installed the extra trim masses, tested the picos and weighed the whole assembly.
      • Placed vacuum flanges and cleaned D-Sub cables ready for routing to the rack.
      • Realigned and immobilized the optical table (which had been bumped).
      • Made safety improvements on the second floor (new safety rail, new arrangement of floor pieces, caution tape around holes)
      • Suspended the dummy BS. Currently however it is not hanging correctly, but is off in the +Y direction by several mm relative to the mirror box.
      • We set up the BS OL, using one of the wheeled chests of drawers as a base and using the OL breadboard from the PR2 assembly frame.
    • Hirata-san made a 3D assembly model for SR2 and added the optical design.
    • Hirata-san worked with Uchiyama-san to solve the 90° rotation problem. It turns out the "box" part with the pistons can be rotated, so we can build the SR2 according to the original design.
    • Hirata-san investigated the puzzle of the BF-IM maraging rods, where the 2D drawings and 3D CAD do not agree. Fortunately the actual parts seem to agree with the 3D CAD.
    • Hirata-san washed 3 OSEMs (last of initial 10 for BS) and parts for two BFs (for Type A). He moved the BF parts into the clean room and will assemble them with ATC staff from next Wednesday 9/7.
  • Type B ongoing issues
    • Longer cables for BF->PI and SF->PI - RECEIVED

  • Longer term to-do list
    • Decide position of BS rack - DONE
    • Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata) - ONGOING.
    • Write more of payload assembly procedure (Fabian) - ONGOING
    • Write more of BS Assembly Procedure E1504235, E1504235 draft (Mark) - ONGOING

    • Lower breadboard installation to be incorporated into the procedure document.
    • Work on BS simulation (Fabian)
    • 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)

KAGRA/Subgroups/VIS/TypeB/Minutes (last edited 2022-07-29 13:18:56 by fabian.arellano)