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Editor: EnzoTapia
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 * Mark, Fabian and Enzo continued BS Test Hang work:
  * 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.
  * 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. This can probably be made up easily by designing the 18 kg of extra mass appropriately.
  * 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 removed the end panels of the IRM to get access to the IM and rearranged the trim mass on the the IM to get it balance to bubble-level precision. (We still need to do fine pitch adjustment with the OL so that the BS is at the right angle, secure the trim mass properly and replace the IRM panels and OSEMs.)
 * Miyakawa-san and Yamamoto-san redid the cabling from the computer room to the PR2 rack and expected to finish by lunchtime on Friday.
 * 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 3/19 ====
 * Fujii-kun successfully assembled and tested a geophone pod (klogs 4492, 4508).
 * Hirata-san set up the dummy BS to soak off the sapphire prisms. (In process)
 * Shoda-san, Hirata-san and Enzo finished the assembly of 12 OSEMs. We still need to measure the maximum output (In process)
 * We will send the OSEMs to Kamioka today.
 * Enzo made 2 In-air picomotor cable.



==== Plan for week of 3/26 ====
 * Tanioka-kun joins.
 * Mark vacation.
 * Shoda-san at Mitaka
 * Others at Kamioka
 * --
 * Lay SR3 in-air cabling (Enzo++).
 * Finish tuning of BFs (Hirata-san++).
 * SF check (Hirata-san++).
  * Check load capacity.
  * Check fit of caps.
  * Add cable clamps to bases.
  * Add cable clamps and Cu segments to caps (only if they fit well).
  * Cable LVDTs and steppers.

==== Plan for week of 4/2 ====
 * Mark at Mitaka Mon, Kamioka from Tue.
 * Shoda-san at Mitaka
 * Others at Kamioka
 * --
 * Glue SR3 (if available)
 * Build 2xIM, 2xIRM (if parts available - due 3/30)

==== Plan for week of 4/9 ====
 * Shoda-san at Mitaka
 * Others at Kamioka
 * --
 * Finish IMs and IRMs
 * Build 1xRM

==== Plan for week of 4/16 ====
 * Start SR3 Hang?

==== Plan for week of 4/23 ====
 * F0 blade prototype test

==== Plan for week of 4/30 ====
  * Golden Week!

==== 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 ====
 * Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun)
 * 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 3/19

  • Fujii-kun successfully assembled and tested a geophone pod (klogs 4492, 4508).
  • Hirata-san set up the dummy BS to soak off the sapphire prisms. (In process)
  • Shoda-san, Hirata-san and Enzo finished the assembly of 12 OSEMs. We still need to measure the maximum output (In process)
  • We will send the OSEMs to Kamioka today.
  • Enzo made 2 In-air picomotor cable.

Plan for week of 3/26

  • Tanioka-kun joins.
  • Mark vacation.
  • Shoda-san at Mitaka
  • Others at Kamioka
  • --
  • Lay SR3 in-air cabling (Enzo++).
  • Finish tuning of BFs (Hirata-san++).
  • SF check (Hirata-san++).
    • Check load capacity.
    • Check fit of caps.
    • Add cable clamps to bases.
    • Add cable clamps and Cu segments to caps (only if they fit well).
    • Cable LVDTs and steppers.

Plan for week of 4/2

  • Mark at Mitaka Mon, Kamioka from Tue.
  • Shoda-san at Mitaka
  • Others at Kamioka
  • --
  • Glue SR3 (if available)
  • Build 2xIM, 2xIRM (if parts available - due 3/30)

Plan for week of 4/9

  • Shoda-san at Mitaka
  • Others at Kamioka
  • --
  • Finish IMs and IRMs
  • Build 1xRM

Plan for week of 4/16

  • Start SR3 Hang?

Plan for week of 4/23

  • F0 blade prototype test

Plan for week of 4/30

  • Golden Week!

To-Do Lists, Schedule

Vacation Info

  • Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun)
  • Fabian vacation, 3/26-4/27 (then gone).

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