Differences between revisions 79 and 89 (spanning 10 versions)
⇤ ← Revision 79 as of 2016-10-27 12:56:30 →
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  * Fabian, Mark and Liu-kun did BS installation at Kamioka:
   * Debugged the issue with the BF keystone being tilted enough to cause rubbing on the yoke for the magnets. It was solved by moving the yoke ≈1 mm taking advantage of the oversized holes.
   * Measured the height of the payload as a function of trim mass. The BF spring seems to have a slightly lower load capacity and a rather higher spring constant than when it was remeasured by Hirata-san.
   * Removed IM trim mass to set the average height of the keystone to the CAD value.
   * Moved IM trim mass around to set the pitch of the dummy BS.
  * Hirata-san
   * TBD.
 		   * Mark worked on task lists and schedule.
  * Mark worked on an update of the BS Electronic Items doc ([[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5111|E1505111]]) and started a SRx Electronics Items doc ([[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5886|E1605886]]).
  * Mark worked on an update of the In-Vacuum Cable doc ([[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3901|E1503901]]), including information on final lengths that Fabian and Hirata-san had decided when making adapter cables.
  * Mark considered an alternative cabling scheme for the geophones (with a different adapter cable to put the signals and power on different lines and a matching unscrambler) but ended up concluding that the existing design would probably be OK.
  * Fabian worked on a redesign of the EQ stops for the BS (2 of 4 screws under the RM are opposite large holes and there are no screws to restrain the RM front/back at either top or bottom).
  * Hirata-san worked on PR/SR mirror box modifications with Shoda-san (on-going).
  * Hirata-san partially assembled a bottom filter for use in fit tests of the PRx BF recoil mass.

  

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

  • Type B Past Week Summary
    • Mark worked on task lists and schedule.

    • Mark worked on an update of the BS Electronic Items doc (E1505111) and started a SRx Electronics Items doc (E1605886).

    • Mark worked on an update of the In-Vacuum Cable doc (E1503901), including information on final lengths that Fabian and Hirata-san had decided when making adapter cables.

    • Mark considered an alternative cabling scheme for the geophones (with a different adapter cable to put the signals and power on different lines and a matching unscrambler) but ended up concluding that the existing design would probably be OK.
    • Fabian worked on a redesign of the EQ stops for the BS (2 of 4 screws under the RM are opposite large holes and there are no screws to restrain the RM front/back at either top or bottom).
    • Hirata-san worked on PR/SR mirror box modifications with Shoda-san (on-going).
    • Hirata-san partially assembled a bottom filter for use in fit tests of the PRx BF recoil mass.

KAGRA/Subgroups/VIS/TypeB/Minutes (last edited 2022-10-28 10:02:46 by fabian.arellano)