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==== Past week report ====
At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san):		 ==== Report for week of 2/26 ====
 * We routed all the cables from the BF level up via the flying saucer to the SF.
 * Hirata-san tried filing the SF cap to improve the fit, but without much success.
 * Hirata-san installed the Cu segments and cable clamps on the SF cap and the SF LVDT and FR cables.
 * We cabled and tested the BF cap picos and the SF LVDT and FR. (The LVDT still needs a full calibration.)
 * We worked on recovering the IM OSEM alignment.
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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 3/5 ====
 * Shoda-san at Mitaka.
 * Hirata-san vacation Mon 3/5, then Kamioka
 * Fabian Mitaka Mon-Tue (COMSOL training), Kamioka Wed-Fri.
 * Others at Kamioka.
 * -
 * '''Remove LBB temporary ballast masses from BS chamber.'''
 * Finish recovering IM OSEM alignment.
 * Calibrate SF LVDT.
 * Lift SF/... section and check total mass and balance.
 * Get SRM tank mushroom section installed (Hirata-san, Kimura-san)
 * Set up for rebuilding of two BFs.
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==== Plan for coming weeks ====
For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]].		 ==== Plan for week of 3/12 ====
 * Shoda-san at Mitaka.
 * Mark at ASJ (Chiba) Fri, then Mitaka.
 * Hirata-san vacation Mon 3/5; Kamioka Tue-Thu; Mitaka Fri
 * Others Kamioka Mon-Thu
 * Install boxes in SR3 and SRM racks.
 * Lay SR3 in-air cabling.
 * Continue rebuild of BFs.
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Week of 5/1:
 * No activity (Golden Week).		 ==== Plan for week of 3/19 ====
 * Mark at LVC meeting
 * All others at Mitaka
 * Make two sets of IM OSEMs
 * Make last in-air pico adapter cable
 * Make three in-air stepper splitter cables for SR2, SR3 and SRM.
 * Set up Dummy BS prism removal.
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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).		 ==== Plan for week of 3/26 ====
 * Mark vacation.
 * Shoda-san at Mitaka
 * Others at Kamioka
 * --
 * F0 Prototype Blade Test
  * Characterize blades.
  * Choose best set of three.
  * Remove cracked blades from filter in SRM area.
  * Set up test weights in SRM area, first floor.
  * Remove floor panel in SRM area, second floor.
  * Install chosen blades.
  * Measure load capacity.
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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.
 		 ==== 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 ====
 * Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun)
 * Hirata-san vacation, Mon 3/5.
 * 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 2/26

  • We routed all the cables from the BF level up via the flying saucer to the SF.
  • Hirata-san tried filing the SF cap to improve the fit, but without much success.
  • Hirata-san installed the Cu segments and cable clamps on the SF cap and the SF LVDT and FR cables.
  • We cabled and tested the BF cap picos and the SF LVDT and FR. (The LVDT still needs a full calibration.)
  • We worked on recovering the IM OSEM alignment.

Plan for week of 3/5

  • Shoda-san at Mitaka.
  • Hirata-san vacation Mon 3/5, then Kamioka
  • Fabian Mitaka Mon-Tue (COMSOL training), Kamioka Wed-Fri.
  • Others at Kamioka.
  • -

  • Remove LBB temporary ballast masses from BS chamber.

  • Finish recovering IM OSEM alignment.
  • Calibrate SF LVDT.
  • Lift SF/... section and check total mass and balance.
  • Get SRM tank mushroom section installed (Hirata-san, Kimura-san)
  • Set up for rebuilding of two BFs.

Plan for week of 3/12

  • Shoda-san at Mitaka.
  • Mark at ASJ (Chiba) Fri, then Mitaka.
  • Hirata-san vacation Mon 3/5; Kamioka Tue-Thu; Mitaka Fri
  • Others Kamioka Mon-Thu
  • Install boxes in SR3 and SRM racks.
  • Lay SR3 in-air cabling.
  • Continue rebuild of BFs.

Plan for week of 3/19

  • Mark at LVC meeting
  • All others at Mitaka
  • Make two sets of IM OSEMs
  • Make last in-air pico adapter cable
  • Make three in-air stepper splitter cables for SR2, SR3 and SRM.
  • Set up Dummy BS prism removal.

Plan for week of 3/26

  • Mark vacation.
  • Shoda-san at Mitaka
  • Others at Kamioka
  • --
  • F0 Prototype Blade Test
    • Characterize blades.
    • Choose best set of three.
    • Remove cracked blades from filter in SRM area.
    • Set up test weights in SRM area, first floor.
    • Remove floor panel in SRM area, second floor.
    • Install chosen blades.
    • Measure load capacity.

To-Do Lists, Schedule

Vacation Info

  • Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun)
  • Hirata-san vacation, Mon 3/5.
  • Fabian vacation, 3/26-4/27 (then gone).

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