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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 4/9 ====
 * We packed away the SRM SF and BF.
 * After several failed attempts with one secondary prism, Mark finished the SR3 prism/magnet gluing.
 * Tanioka-kun built two IRMs (less OSEMs).
 * Enzo built an RM.
 * Kozu-kun and Enzo calibrated one set of 6 IM OSEMs for SR3. (6 OSEMs for SRM remain to be done.)
 * Hirata-san aligned the assembly frame, installed the interface bars and IM ring, and installed the IM.

==== Plan for week of 4/23 ====
 * Hirata-san at Mitaka Mon-Tue, then Kamioka.
 * Tanioka-san at Kamioka Tue-Thu
 * Kozu-kun at Kamioka Wed-Fri (but working with PEM on Fri).
 * Others at Kamioka full week
 * --
 * Start SR3 Hang
  * Hang optic.
  * Hang RM.
  * Cable RM OSEMs.

==== Plan for week of 4/30 ====
 * Shoda-san at Mitaka.
 * Mark, Enzo at Kamioka Mon-Wed or TBD.
 * Others doing Golden Week stuff.
 * --
 * Observe KAGRA Phase 1 operations, assist if problems arise.
 * Do BF TFs.
 * Continue SR3 hang.

==== To-Do Lists, Schedule ====
 * [[KAGRA/Subgroups/VIS/TypeB/March2018]]
 * [[KAGRA/Subgroups/VIS/TypeB/April2018]]
 * [[KAGRA/Subgroups/VIS/TypeB/ToDoBS]]
 * [[KAGRA/Subgroups/VIS/TypeB/ToDoSR]]
 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779-v1 Type B Schedule (SR)]]

==== Vacation Info ====
 * Fabian vacation, 3/26-4/27 (then gone).

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for week of 4/9

  • We packed away the SRM SF and BF.
  • After several failed attempts with one secondary prism, Mark finished the SR3 prism/magnet gluing.
  • Tanioka-kun built two IRMs (less OSEMs).
  • Enzo built an RM.
  • Kozu-kun and Enzo calibrated one set of 6 IM OSEMs for SR3. (6 OSEMs for SRM remain to be done.)
  • Hirata-san aligned the assembly frame, installed the interface bars and IM ring, and installed the IM.

Plan for week of 4/23

  • Hirata-san at Mitaka Mon-Tue, then Kamioka.
  • Tanioka-san at Kamioka Tue-Thu
  • Kozu-kun at Kamioka Wed-Fri (but working with PEM on Fri).
  • Others at Kamioka full week
  • --
  • Start SR3 Hang
    • Hang optic.
    • Hang RM.
    • Cable RM OSEMs.

Plan for week of 4/30

  • Shoda-san at Mitaka.
  • Mark, Enzo at Kamioka Mon-Wed or TBD.
  • Others doing Golden Week stuff.
  • --
  • Observe KAGRA Phase 1 operations, assist if problems arise.
  • Do BF TFs.
  • Continue SR3 hang.

To-Do Lists, Schedule

Vacation Info

  • Fabian vacation, 3/26-4/27 (then gone).

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