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==== Past week report ====
At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san):		 ==== 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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 * We craned in the PI.
 * We assembled the thrust bearing holder that receives the PI-SF rod. (The recess for the bearing was very slightly too small and had a burr near a retaining screw hole that prevented the bearing from seating properly, and so it required filing and re-cleaning.)
 * We hooked the SF and lowered the jacks under the SF to suspend the SF/... section.
 * The top filter rose when unlocked, and required about 1.8 kg to send it back down. Therefore we may be OK - the top filter seems to have about 8 kg more capacity than as measured by G&M. The hex cable clamp (≈0.25 kg) and the cables between the PI and SF still have to be added, but we can get an extra 3 kg by removing one of the three Cu damper segments (and rearranging the other two).
 * Hirata-san built and installed three LBB blade units.
 * Enzo kept debugging the SF LVDT. We repaired several broken wires, but it's still not behaving correctly. We suspect the ordering of the three coils (input output and excitation) may not be right. If so, we should be able to fix it with an adapter cable without removing the SF cap.		 ==== 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, Wed (to receive and wash parts).
 * 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.
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==== Plan for coming weeks ====
For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]].		 ==== Plan for week of 2/19 ====
 * Enzo back from Tuesday.
 * Shoda-san at Mitaka
 * 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.
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Week of 5/1:
 * No activity (Golden Week).		 ==== Plan for week of 2/26 ====
 * Add Cu segments to SF cap.
 * Lift SF/... section and check total mass and balance.
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Week of 5/8:
 * Commence work Tuesday 5/9.
 * Remove PI temporarily.
 * Continue debugging SF LVDT (removing cap if necessary).
 * Investigate possible mis-alignment between the tips of the LBB blades and the holes for the rods going down to the damper ring.
 * Add magnets to upper SF damper ring.
 * Reinstall PI, this time with rods and damper ring.
 * Reinstall PI-SF rod, this time with hex cable clamp.
 * Install PI yaw stepper.
 * Wire up PI yaw stepper and vertical fishing-rod steppers.
 * Route cables from SF to PI (may involve removing part of Cu damper).

Week of 5/15:
 * Enzo from Tuesday 5/16 (driving test), rest of team from Monday.
 * Prepare for PR2 bellows removal on 5/15 (move table with tools).
 * Wire up PI horizontal LVDTs and steppers.
 * Install geophones.
 * Unlock IP, re-level PI to center PI, add arc weights as required.
 		 ==== 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, Wed (to receive and wash parts).
  • 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
  • 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

  • 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)