Differences between revisions 97 and 276 (spanning 179 versions)
⇤ ← Revision 97 as of 2016-12-15 14:09:09 →
Size: 1797
Editor: MarkBarton
Comment:
← Revision 276 as of 2018-04-13 12:54:35 → ⇥
Size: 2006
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
Line 5: Line 5:
 * 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 ====
 * Mark glued prisms and magnet/standoff assemblies on the SR3. The SR3 needed to be raised in the box by 0.7 mm to make the prisms go on at the right height, which was done using M4 washers under the PEEK feet.
 * Mark glued ferromagnetic disks on the last 5 IM flags. This completes 2 sets, for SR3 and SRM.
 * Mark configured two pico motor drivers ordered by Takahashi-san as SR3-IM and SRM-BF.
 * Enzo and Kozu-kun finished preparing and calibrating the SF and BF for SR3 and almost entirely finished with those for SRM.
 * Hirata-san built two IMs for SR3 and SRM, and tested the pitch and roll adjustment by running each mass to both limits of its range with the pico driver.
 * Shoda-san worked on the design of the metal SRM.

==== Plan for week of 4/16 ====
 * Shoda-san at Mitaka
 * Tanioka-san at Kamioka Tue-Thu
 * Others at Kamioka full week
 * --
 * Move SF and BF for SRM out of the way.
 * Check results of gluing.
 * Build 1xRM
 * Start SR3 Hang
  * Reset assembly frame crossbars to correct heights.
  * Center the optical table.
  * Align the assembly frame vertically.

==== Plan for week of 4/23 ====
 * Shoda-san at Mitaka
 * Fujii-san at Mitaka?
 * Mark, Enzo at Kamioka
 * Hirata-san at Mitaka
 * Tanioka-san at Mitaka?
 * --
 * Clean parts (cable clamp bases, etc, etc).
 * Observe KAGRA Phase 1 operations, assist if problems arise.

==== 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 ====
 * 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

  • Mark glued prisms and magnet/standoff assemblies on the SR3. The SR3 needed to be raised in the box by 0.7 mm to make the prisms go on at the right height, which was done using M4 washers under the PEEK feet.
  • Mark glued ferromagnetic disks on the last 5 IM flags. This completes 2 sets, for SR3 and SRM.
  • Mark configured two pico motor drivers ordered by Takahashi-san as SR3-IM and SRM-BF.
  • Enzo and Kozu-kun finished preparing and calibrating the SF and BF for SR3 and almost entirely finished with those for SRM.
  • Hirata-san built two IMs for SR3 and SRM, and tested the pitch and roll adjustment by running each mass to both limits of its range with the pico driver.
  • Shoda-san worked on the design of the metal SRM.

Plan for week of 4/16

  • Shoda-san at Mitaka
  • Tanioka-san at Kamioka Tue-Thu
  • Others at Kamioka full week
  • --
  • Move SF and BF for SRM out of the way.
  • Check results of gluing.
  • Build 1xRM
  • Start SR3 Hang
    • Reset assembly frame crossbars to correct heights.
    • Center the optical table.
    • Align the assembly frame vertically.

Plan for week of 4/23

  • Shoda-san at Mitaka
  • Fujii-san at Mitaka?
  • Mark, Enzo at Kamioka
  • Hirata-san at Mitaka
  • Tanioka-san at Mitaka?
  • --
  • Clean parts (cable clamp bases, etc, etc).
  • Observe KAGRA Phase 1 operations, assist if problems arise.

Plan for week of 4/30

  • Golden Week!

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)