Differences between revisions 121 and 203 (spanning 82 versions)
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 * Hirata-san:
  * Made BS disposable wire clamp 3Dmodel and drawings.
  * Made ballast mass drawings for BS Bottomfilter and Standardfilter.
  * Made parts list and screw list for disposable wire clamp and ballast mass.
  * Sent drawings and lists to i-ject for quotation.
  * Start to make drawings for SR big parts (optical bench,damper rings,sus wires,cable clamps) - ongoing.
 * Mark, Fabian and Enzo (at Kamioka):
  * Realized that some of the imbalance in the BF was from the fishing rod and calculated a new set of blade offsets to center the rod but leave the torque from the FR to be cancelled by the trim mass for now.
  * Applied the blade offsets and checked that the BF hung as expected.
  * Found that the yoke was rubbing again and corrected it by putting it at an angle matching the keystone.
  * Found that the cables were adding too much stiffness and friction and rerouted them.
  * Found that the GAS was unstable and reduced the compression symmetrically to get 0.37 Hz.
  * Rebalanced the IM to set the right pitch, yaw and height.
  * Tested the IM picos. Unfortunately the pitch pico stuck near or at one end of its range and we will need to take the end plate off the IM to find out what is wrong.		 === Type B (Mark) ===
==== Past two weeks report ====
At 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):
 * Hirata-san published his inventory of SR parts on Dropbox.

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

Kamioka: Mark
 * Attend commissioning workshop at U Toyama.
 * Be person-on-site for BF work.
 * Set up for mirror gluing.

Mitaka: Fabian and Hirata-san
 * SR procurement.
 * New PI GAS FR design.
 * BS LBB ballast mass design.
 * SR cable lamp design.

Mitaka: Enzo and Kozu-kun (Wed, Thu)
 * Servos
 * TFs of BF
 * Documentation

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Past two weeks report

At 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):

  • Hirata-san published his inventory of SR parts on Dropbox.

Plan for week of 11/13

Kamioka: Mark

  • Attend commissioning workshop at U Toyama.
  • Be person-on-site for BF work.
  • Set up for mirror gluing.

Mitaka: Fabian and Hirata-san

  • SR procurement.
  • New PI GAS FR design.
  • BS LBB ballast mass design.
  • SR cable lamp design.

Mitaka: Enzo and Kozu-kun (Wed, Thu)

  • Servos
  • TFs of BF
  • Documentation

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