Differences between revisions 97 and 104 (spanning 7 versions)

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Activity report for week of 12/19
- Mark and Fabian checked Hirata-san's drawings and parts/fastener lists for the SRM/PRM order.
BF issue
- Aso-san and Mark decided to have the BS bottom filter

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

-  ⇤ ← Revision 97 as of 2016-12-15 14:09:09 → 
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+   ← Revision 104 as of 2016-12-21 10:09:34 → ⇥
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  Editor: MarkBarton
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- * Mark, Fabian and Enzo continued BS Test Hang work:
  * We installed the BF fishing rod stepper motor adaptor cable.
  * We tried to install the BF LVDT cable but first we encountered trouble routing it, and then several wires broke at the D-Sub end.
  * We laid 6 in-air cables from the tank to the PR2 rank for BF and SF picos, steppers and LVDTs.
  * We lifted the BF/IRM/IM/RM/BS section to weigh it and check its balance. 
   * It was 195.6 kg, which is 18 kg(!) less than the capacity of the SF.
   * There was a major imbalance in roll: with all four built-in trim masses moved up the +Y end, it still needed 270 g of extra trim mass to be level.
  * Unfortunately when we put the payload, the IM was slightly yawed and ended up on the horizontal EQ stop screws. This let the IM-BF maraging rod go slack, which disturbed the leveling of the IM (because every time it is picked up the maraging rod settles in a different place, giving a different suspension point). We may have to partly disassemble the IRM and rearrange the time mass on the the IM.
  * We shipped BS mirror box parts to Shoda-san and components for a new LVDT cable to Hirata-san.
  * We posed for pictures of the BS by a team from National Geographic.
 * Hirata-san 
  * Did parts and fastener lists for the SR payload.
  * Did a 3D model with the SR suspension on the BS assembly frame (to help Mark make adjustments to the frame design).
  * Did 2D drawings of Fabian's concept for BS EQ stop parts.
  * Did a 3D model of a wire clamp with replaceable jaw parts (to avoid having to reuse parts with scars from pressure).
  * Did 2D drawings of a new wire clamps for on top of the BS and SR RMs.
+ * Activity report for week of 12/19
  * Mark and Fabian checked Hirata-san's drawings and parts/fastener lists for the SRM/PRM order.
 * [[KAGRA/Subgroups/VIS/VISMinutes/20161216|BF issue]]
  * Aso-san and Mark decided to have the BS bottom filter