Differences between revisions 159 and 230 (spanning 71 versions)
⇤ ← Revision 159 as of 2017-06-23 20:28:14 →
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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.		 ==== Report for week of 1/29 ====
 * Mark made two sets of in-air pico splitter cables (each with a triple for IM and a double for BF) for SR2 and SR3.
 * Fabian, Hirata-san and Kozu-kun worked on cabling and testing the IM pitch/roll/yaw picos, the BF FR and the BF LVDT. The LVDT connections were initially unreliable and Hirata-san had to redo the pins on the coil wires.
 * Fabian installed ballast masses in the BF.
 * Mark worked on schedule.
 * Mark did inventory of the stepper motor drivers (many were not accounted for on the wiki and/or JGWDoc and one is missing) and reserved two for SR3.
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==== 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.)		 ==== Plan for week of 2/13 ====
 * No work Monday (建国記念の日の振替休日)
 * Enzo on vacation
 * Hirata-san at Mitaka Tue (self-evaluation interview).
 * Shoda-san at Mitaka.
 * All others at Kamioka.
 * -
 * Build IRM around IM.
 * Cable/test/adjust IM OSEMs.
 * Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw.

==== Plan for week of 2/19 ====
 * Enzo back from Tuesday.
 * Shoda-san at Mitaka.
 * Hirata-san at Mitaka Tue+Wed (to receive and wash parts; hope to change to Mon+Tue).
 * All others at Kamioka.
 * -
 * Lift BF/... section and check total mass and balance.
 * Cable and test BF picos.
 * Add section of SS up to SF ring.
 * Bring in SF.
 * Hook BF/... section.
 * Route cables up to under SF.
 * Check/adjust total mass of BF/... section.

==== Plan for week of 2/26 ====
 * Shoda-san at Mitaka.
 * -
 * Add Cu segments to SF cap.
 * Lift SF/... section and check total mass and balance.

==== Vacation Info ====
 * Enzo 1/30-2/19.
 * Fabian 4/2-4/27 vacation (then gone).

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for week of 1/29

  • Mark made two sets of in-air pico splitter cables (each with a triple for IM and a double for BF) for SR2 and SR3.
  • Fabian, Hirata-san and Kozu-kun worked on cabling and testing the IM pitch/roll/yaw picos, the BF FR and the BF LVDT. The LVDT connections were initially unreliable and Hirata-san had to redo the pins on the coil wires.
  • Fabian installed ballast masses in the BF.
  • Mark worked on schedule.
  • Mark did inventory of the stepper motor drivers (many were not accounted for on the wiki and/or JGWDoc and one is missing) and reserved two for SR3.

Plan for week of 2/13

  • No work Monday (建国記念の日の振替休日)
  • Enzo on vacation
  • Hirata-san at Mitaka Tue (self-evaluation interview).
  • Shoda-san at Mitaka.
  • All others at Kamioka.
  • -
  • Build IRM around IM.
  • Cable/test/adjust IM OSEMs.
  • Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw.

Plan for week of 2/19

  • Enzo back from Tuesday.
  • Shoda-san at Mitaka.
  • Hirata-san at Mitaka Tue+Wed (to receive and wash parts; hope to change to Mon+Tue).
  • All others at Kamioka.
  • -
  • Lift BF/... section and check total mass and balance.
  • Cable and test BF picos.
  • Add section of SS up to SF ring.
  • Bring in SF.
  • Hook BF/... section.
  • Route cables up to under SF.
  • Check/adjust total mass of BF/... section.

Plan for week of 2/26

  • Shoda-san at Mitaka.
  • -
  • Add Cu segments to SF cap.
  • Lift SF/... section and check total mass and balance.

Vacation Info

  • Enzo 1/30-2/19.
  • Fabian 4/2-4/27 vacation (then gone).

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