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==== Past week report ====
At Kamioka (Mark, Fabian, Enzo, Hirata-san):
 * We disconnected the in-vacuum and in-air cabling from the feedthroughs.
 * We removed crossbars below BF and SF.
 * We set the SF damper to 4 mm clearance.
 * We adjusted the jacks to nominal height.
 * We removed the geophones and PI yaw stepper for craning.
 * We craned the suspension into the tank, and hooked the LBB Cu ring.
 * We replaced the geophones etc.
 * We unlocked all but the IP and adjusted the jacks until the pendulum was centered in the security structure.
 * We unlocked the IP and adjusted to to center with the jacks and fishing rods.
 * We craned the vacuum tank lid+ring back on, and then removed just the lid (only).
 * We unclamped the LBB damper rings and removed the spacers.
 * We removed the blocks and shims supporting the LBB, inserted the long screw feet and hooked the LBB to the Cu damper ring.
 * We added 2*31.5 kg of ballast to the LBB, which got the blades to the point where firm pressure would depress the tips.
 * We reconnected the in-vacuum cabling. In ≈15 places we opted to omit the Type 1 cable and use a F-F gender bender.
 * We reconnected all but four of the in-air cables.		 ==== Past two weeks report ====
Kamioka (Mark, Enzo, Kozu-kun):
 * Supported IA team.
 * Replaced LPCDs for IM OSEMs with HPCDs for increased pitch/yaw range.
 * Re-zeroed OL after significant change of beam position during IA.
 * Re-laid-out OL to improve focus of lens to LEN QPD.
 * Offloaded the pitch/yaw actuation at the IM OSEMs using the IM pitch/yaw picos.
 * Enzo worked on design of control loops using the OL.
 * Kozu-kun worked on diagonalizing the OL.
Line 24: Line 16:
==== Plan for week of 6/26 ====
Mark and Enzo at Kamioka:
 * Double-check where gender-benders were used.
 * Finish connecting in-air cabling.
 * Debug all cabling.
 * Work with Simon to set up LSOL.
Fabian at Mitaka:
 * Design final ballast masses for IM, BF and SF assuming no BF rebuild (needs to be adaptable).
 * Check all items for BS flag/prism gluing are available (prisms, flags, jigs, mirror box, glue, scale, mixing tools etc).
Hirata-san at Mitaka:
 * Do new 3D CAD:
  * BS Test Hang build, with top of tank, full suspension, and LBB damper all reversed.
  * Final BS build, as above, but with everything BF down rotated back to original.
   * In-tank version.
   * On-assembly-frame version. (Adjust jack positions if possible, or leave for Mark to do.)
  * SR2 on BS assembly frame. (Adjust jack positions if possible, or leave for Mark to do.)		 Mitaka (Fabian, Hirata-san):
 * Fabian did mechanical design:
  * F0 FR
  * Cable clamps for the SR IP base.
  * New SR recoil ballast masses.
  * LBB ballast.
  * Update of BS 3D CAD with the as-built ballast.
 * Hirata-san
  * made and updated inventory list for SR.
  * made order list and asked some quotes.
  * Ordered some parts.
  * Talked with mirapro about SRM optical bench.
  * Made some drawings for SR preparation.

==== Plan for week of 11/13 ====

Enzo and Kozu-kun at Mitaka
 * Servos
 * Diagonalization of OL
 * TFs of BF
 * Documentation

Mark and Fabian at Kamioka.
 * Mark attends commissioning workshop at U Toyama.
 * Support BF characterization work.
 * Prepare for mirror gluing.
 * Prepare for IM assembly.

Hirata-san at Mitaka
 * SR procurement.
 * Get BS prism-gluing jigs reworked for use with PR/SR mirror box.

==== Plan for week of 11/20 ====
 * Holiday on Thu 3/23
 * Fabian at commissioning workshop
 *

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Past two weeks report

Kamioka (Mark, Enzo, Kozu-kun):

  • Supported IA team.
  • Replaced LPCDs for IM OSEMs with HPCDs for increased pitch/yaw range.
  • Re-zeroed OL after significant change of beam position during IA.
  • Re-laid-out OL to improve focus of lens to LEN QPD.
  • Offloaded the pitch/yaw actuation at the IM OSEMs using the IM pitch/yaw picos.
  • Enzo worked on design of control loops using the OL.
  • Kozu-kun worked on diagonalizing the OL.

Mitaka (Fabian, Hirata-san):

  • Fabian did mechanical design:
    • F0 FR
    • Cable clamps for the SR IP base.
    • New SR recoil ballast masses.
    • LBB ballast.
    • Update of BS 3D CAD with the as-built ballast.
  • Hirata-san
    • made and updated inventory list for SR.
    • made order list and asked some quotes.
    • Ordered some parts.
    • Talked with mirapro about SRM optical bench.
    • Made some drawings for SR preparation.

Plan for week of 11/13

Enzo and Kozu-kun at Mitaka

  • Servos
  • Diagonalization of OL
  • TFs of BF
  • Documentation

Mark and Fabian at Kamioka.

  • Mark attends commissioning workshop at U Toyama.
  • Support BF characterization work.
  • Prepare for mirror gluing.
  • Prepare for IM assembly.

Hirata-san at Mitaka

  • SR procurement.
  • Get BS prism-gluing jigs reworked for use with PR/SR mirror box.

Plan for week of 11/20

  • Holiday on Thu 3/23
  • Fabian at commissioning workshop

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