Differences between revisions 97 and 215 (spanning 118 versions)
⇤ ← Revision 97 as of 2016-12-15 14:09:09 →
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Editor: MarkBarton
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← Revision 215 as of 2018-01-12 09:07:17 → ⇥
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Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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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.		 === Type B (Mark) ===
==== Report for week of 12/25 ====
 * Hirata-san got the L-brackets machined and washed, and installed them on the IM ring bars.
 * Shoda-san recovered the BS from the power outage on 12/25.
 * Miyakawa-san fixed an issue with the SR2 RTM which had prevented it from running.
 * Shoda-san, Hirata-san and Kozu-kun weighed the IM without ballast masses, and then added the lower masses and installed the IM on the assembly frame.
 * They cleaned the assembly frame and installed new jack receptacles on the load gauge adapter.
 * They installed the winch system on the IM, and inspected the clamp pieces for possible scratches.
 * They ran cables for the SR2 steppers and OSEMs.
 * They calibrated the BF LVDT.

==== Report for week of 1/4 ====
 * Mark fixed a number of errors with the Type B screens.

==== Report for week of 1/9 ====
 * We weighed the mirror in its box (and later the empty box), and the RM.
 * Fabian worked on the SR2/SR3/SRM mass budget and did an inventory of spare ballast masses.
 * We hung the SR2 and RM.
 * We assembled the bottom section of the security structure below the RM.
 * Hirata-san gave up on waiting for a third quote for the blades and blade parts and started the ordering process.
 * Hirata-san got rod cable clamp parts from Takahashi-san and worked on drawings for the improved BS vertical and yaw adjusters.

==== Plan for week of 1/15 ====
 * Shoda-san at Mitaka making OSEMs.
 *
==== Plan for week of 1/22 ====

==== Plan for week of 1/22 ====
 * Mark, Fabian, Enzo, Shoda-san at Kamioka Tue-Fri.
 * Hang SR and RM.

==== Vacation Info ====
 * Enzo 1/30-2/19 (at Mitaka 1/29, part of 1/30)
 * Kozu-kun 1/29-2/2

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for week of 12/25

  • Hirata-san got the L-brackets machined and washed, and installed them on the IM ring bars.
  • Shoda-san recovered the BS from the power outage on 12/25.
  • Miyakawa-san fixed an issue with the SR2 RTM which had prevented it from running.
  • Shoda-san, Hirata-san and Kozu-kun weighed the IM without ballast masses, and then added the lower masses and installed the IM on the assembly frame.
  • They cleaned the assembly frame and installed new jack receptacles on the load gauge adapter.
  • They installed the winch system on the IM, and inspected the clamp pieces for possible scratches.
  • They ran cables for the SR2 steppers and OSEMs.
  • They calibrated the BF LVDT.

Report for week of 1/4

  • Mark fixed a number of errors with the Type B screens.

Report for week of 1/9

  • We weighed the mirror in its box (and later the empty box), and the RM.
  • Fabian worked on the SR2/SR3/SRM mass budget and did an inventory of spare ballast masses.
  • We hung the SR2 and RM.
  • We assembled the bottom section of the security structure below the RM.
  • Hirata-san gave up on waiting for a third quote for the blades and blade parts and started the ordering process.
  • Hirata-san got rod cable clamp parts from Takahashi-san and worked on drawings for the improved BS vertical and yaw adjusters.

Plan for week of 1/15

  • Shoda-san at Mitaka making OSEMs.

Plan for week of 1/22

Plan for week of 1/22

  • Mark, Fabian, Enzo, Shoda-san at Kamioka Tue-Fri.
  • Hang SR and RM.

Vacation Info

  • Enzo 1/30-2/19 (at Mitaka 1/29, part of 1/30)
  • Kozu-kun 1/29-2/2

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