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 * Type B Past Week Summary
  * 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.
 		  * Activity report for weeks of 12/26 and 1/2

  * Hirata-san:
   * Modified parts list and screw list for payload.
   * Sent lists to i-ject and asked for preliminary quotes.
   * Made drawings for some jigs (PR hold-down jig) and some parts for payload (PR/SR wire clamps with disposable jaw pieces - improved version with disposable pieces in both primary and secondary clamps).
   * For Type Bp:
    * Searched for PR gluing jigs.
    * Washed and assembled recoilmass base for mirror hanging jigs, and sent them to Kamioka.
    * Washed additional masses for IM and sent them to Kamioka.
   * For others:
    * Washed IMMT plate and sent them to Kamioka.
  * Fabian
   * Designed a pull down system to fix the PR IM to the EQ stop (similar to the SR one).
   * Worked on design of the SR assembly frame. As hoped, the SR version can be almost identical to the BS version.
   * Worked on design of additional trim mass (≈18 kg) for the BS BF.
   * Checked assembly PR/SR drawings. There were a few corrections/changes.
   * Checked fastener list. There were few corrections/changes.
   * Checked component list for the manufacture order. There were few corrections/changes.
   * Helped in searching for the PR gluing jigs.
  * Mark
   * Started design of SR assembly frame (but then passed it to Fabian).
   * Worked on task lists and schedule.
 * Plan for 1/10-13
  * Mark and Fabian at Kamioka:
   * Finish rebalance of IM
   * Reinstall IRM, adjust OSEMs
   * Replace broken Type 3 cable.
   * Do TFs from IRM OSEMs to IRM and IM OSEMs.
   * Cable up and test BF LVDT and fishing rod (time permitting).
   * Disconnect BF and ship back to Mitaka (time permitting).
  * Hirata-san:
   * More SR procurement.

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

  • Activity report for weeks of 12/26 and 1/2
    • Hirata-san:
      • Modified parts list and screw list for payload.
      • Sent lists to i-ject and asked for preliminary quotes.
      • Made drawings for some jigs (PR hold-down jig) and some parts for payload (PR/SR wire clamps with disposable jaw pieces - improved version with disposable pieces in both primary and secondary clamps).
      • For Type Bp:
        • Searched for PR gluing jigs.
        • Washed and assembled recoilmass base for mirror hanging jigs, and sent them to Kamioka.
        • Washed additional masses for IM and sent them to Kamioka.
      • For others:
        • Washed IMMT plate and sent them to Kamioka.
    • Fabian
      • Designed a pull down system to fix the PR IM to the EQ stop (similar to the SR one).
      • Worked on design of the SR assembly frame. As hoped, the SR version can be almost identical to the BS version.
      • Worked on design of additional trim mass (≈18 kg) for the BS BF.
      • Checked assembly PR/SR drawings. There were a few corrections/changes.
      • Checked fastener list. There were few corrections/changes.
      • Checked component list for the manufacture order. There were few corrections/changes.
      • Helped in searching for the PR gluing jigs.
    • Mark
      • Started design of SR assembly frame (but then passed it to Fabian).
      • Worked on task lists and schedule.
  • Plan for 1/10-13
    • Mark and Fabian at Kamioka:
      • Finish rebalance of IM
      • Reinstall IRM, adjust OSEMs
      • Replace broken Type 3 cable.
      • Do TFs from IRM OSEMs to IRM and IM OSEMs.
      • Cable up and test BF LVDT and fishing rod (time permitting).
      • Disconnect BF and ship back to Mitaka (time permitting).
    • Hirata-san:
      • More SR procurement.

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