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= Scraps of text for incorporation in the Vis Meeting Minutes = = Scraps of text for incorporation in the VIS Meeting Minutes =

[[KAGRA/Subgroups/VIS/MeetingNAOJ]]

 * Type B Past Week Summary
  * Flags and metal prisms ordered; expected 5/31.
  * New assembly drawing [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5179| D1605179]] focussing on items not part of main chain (and associated screws):
   * Crane adapter
   * Lower breadboard blade module (with cable clamps)
   * IM-RM safety bar ([[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5127| D1605127]] from last week now obsolete)
  * 3D assembly changed to have geophones instead of accelerometers (but SRx will probably be per original design - need to revisit circuit diagram)
  * Concept for load gauge adapter decided (reuse crane adapter plate and jacks from below PI; add Misumi crossbars, cleanroom-compatible chain hoist: [[attachment: Crane Frame.pdf]])
  * Concept for second floor of clean booth decided (remove all floor panels; add bridge panels at right angles: [[attachment:BS Cleanbooth.pdf]])
  * Modified drawings for main assembly frame and drawings for most small parts (jack adapters etc) received from Mirapro.
  * Wire sizes decided: 300 µm piano wire and 500 µm tungsten (will revisit this later).
  * Lots of work on [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4817| E1604817]] (Fabian; [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!191&authkey=!AMe0pdcd9GDm1H0&ithint=folder%2cwebloc|Draft on OneDrive]]) and [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235| E1504235]] (Mark; [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder%2cwebloc|Draft on OneDrive]])

 * Type B Past Week Summary
  * Fabian did inventory of parts/fasteners for dummy BS, RM, IM and IRM - almost all at Mitaka. A handful (picos, pico drivers) will be brought back from Kamioka.
  * Fabian continued work on Mathematica and Matlab models of the BS and control system. He now gets much better agreement after correcting discrepancies between the parameter sets.
  * Hirata-san worked on organizing:
   * Work platforms
   * Load gauge adapter and associated parts
   * Possible fall-back plans for the rods connecting the security structure to the PI.

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

  • Type B Past Week Summary
    • Flags and metal prisms ordered; expected 5/31.
    • New assembly drawing D1605179 focussing on items not part of main chain (and associated screws):

      • Crane adapter
      • Lower breadboard blade module (with cable clamps)
      • IM-RM safety bar (D1605127 from last week now obsolete)

    • 3D assembly changed to have geophones instead of accelerometers (but SRx will probably be per original design - need to revisit circuit diagram)
    • Concept for load gauge adapter decided (reuse crane adapter plate and jacks from below PI; add Misumi crossbars, cleanroom-compatible chain hoist: Crane Frame.pdf)

    • Concept for second floor of clean booth decided (remove all floor panels; add bridge panels at right angles: BS Cleanbooth.pdf)

    • Modified drawings for main assembly frame and drawings for most small parts (jack adapters etc) received from Mirapro.
    • Wire sizes decided: 300 µm piano wire and 500 µm tungsten (will revisit this later).
    • Lots of work on E1604817 (Fabian; Draft on OneDrive) and E1504235 (Mark; Draft on OneDrive)

  • Type B Past Week Summary
    • Fabian did inventory of parts/fasteners for dummy BS, RM, IM and IRM - almost all at Mitaka. A handful (picos, pico drivers) will be brought back from Kamioka.
    • Fabian continued work on Mathematica and Matlab models of the BS and control system. He now gets much better agreement after correcting discrepancies between the parameter sets.
    • Hirata-san worked on organizing:
      • Work platforms
      • Load gauge adapter and associated parts
      • Possible fall-back plans for the rods connecting the security structure to the PI.

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