Differences between revisions 161 and 196 (spanning 35 versions)
⇤ ← Revision 161 as of 2017-06-30 13:37:39 →
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Editor: MarkBarton
Comment:
← Revision 196 as of 2017-10-05 12:52:28 → ⇥
Size: 1574
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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At Kamioka (Mark, Enzo, Simon, Type Bp team):
 * Mark remade the BF pico adapter cable which was poorly made and had also been damaged.
 * The Type Bp team tided up the BS rack and made new labels for many cables (thanks!).
 * Enzo connected up the in-air cables for the picos and steppers.
 * Mark and Enzo renumbered the PI LVDTs, geophones and LVDTs to make a consistent scheme working anticlockwise.
 * Enzo and Mark debugged all the cables. The only problem we couldn't solve was that the actuator coil for PI LVDT #0 is open-circuit at the connector on the LVDT. (It has been intermittent but worked before the craning.) We may have to redo the connector or replace the LVDT. Limited TFs will be possible in the next week.
 * Simon set up the LSOL and was easily able to get a return beam from the mirror on the dummy BS.
 * Shoda-san copied over the LSOL section of the PR3 real-time model into the BS model and made other improvements (thanks!).
 * Mark brought home		 At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun):
 * We moved or covered stuff in the BS cleanbooth to prepare for the SR2 crane slot cutting and BS-> SR2 assembly frame move.
 * We put the service port covers back on at the BF level of the BS tank.
 * We used the PI jacks to center the bottom of the security structure around the RM.
 * We debugged a mechanical issue where the #2 IP LVDT had too narrow a gap between the moving and fixed parts, so that there was interference with only a very small clockwise yaw of the IP. We fixed it by moving the bottom baseplate (taking advantage of the fact that it was held by screws in oversize holes for this purpose).
 * We used the IP FRs to center the IP.
 * We set the gains on the IP LVDT driver.
 
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At Mitaka (Fabian, Hirata-san):
 * Fabian finished designing final trim masses for IM/BF/SF for the final hang of the BS and passed it to Hirata-san to make drawings and get quotes.
 * Hirata-san requested quotes for the replaceable-jaw version of the BS wire clamps.
 * Fabian and Hirata-san gathered needed items for the BS prism/flag gluing.
 * Hirata-san designed receptacles for the new rods with 8 mm heads and requested quotes.		 ==== Plan for week of 10/2 ====
Kamioka: Mark, Enzo (Tue-Fri), Ohishi-san, Kozu-kun.
 * Finish preparation for SR2 work.
 * Debug electronics, especially actuation.
 * Tune IP, do LVDT/stepper calibration.
 * Remove First Contact, try OL.
Mitaka: Fabian, Hirata-san
 * Design ballast for LBB.
 * Design improved PI yaw adjustment.
 * SR procurement.
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==== Plan for week of 7/3 ====
 * Do prism/flag gluing on real BS at Kashiwa (whole team).
 * Do new 3D CAD (Hirata-san):
  * SR2 on BS assembly frame. (Adjust jack positions if possible, or leave for Fabian/Mark to do.)
  * Final BS build, SS/PI/SF as for Test Hang but with BF/IRM/IM/BS/RM down rotated back to original direction.
   * On-assembly-frame version. (Adjust jack positions if possible, or leave for Mark to do.)
   * In-tank version.
 * Solve arc weight versus magic wand problem.
 * Do mass budget for LBB - design ballast masses (Fabian)
 * Run TFs, make improvements to real-time model (Mark, Enzo).
==== Plan for week of 7/10 ====
 Mark and Enzo at Kamioka:
 * Fix broken LVDT actuator coil.
 * Test picos and steppers more fully.		 ==== Plan for week of 10/10 ====
Holiday Mon 10/9, Open Day prep Fri 10/13.<<BR>>
 * TFs, final preparation for alignment in week of 10/16.

==== Plan for week of 10/16 ====
Kamioka: all but Mark
 * Work with alignment team.

==== Vacation Info ====
Mark: 10/16-24

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Past week report

At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun):

  • We moved or covered stuff in the BS cleanbooth to prepare for the SR2 crane slot cutting and BS-> SR2 assembly frame move.

  • We put the service port covers back on at the BF level of the BS tank.
  • We used the PI jacks to center the bottom of the security structure around the RM.
  • We debugged a mechanical issue where the #2 IP LVDT had too narrow a gap between the moving and fixed parts, so that there was interference with only a very small clockwise yaw of the IP. We fixed it by moving the bottom baseplate (taking advantage of the fact that it was held by screws in oversize holes for this purpose).
  • We used the IP FRs to center the IP.
  • We set the gains on the IP LVDT driver.

Plan for week of 10/2

Kamioka: Mark, Enzo (Tue-Fri), Ohishi-san, Kozu-kun.

  • Finish preparation for SR2 work.
  • Debug electronics, especially actuation.
  • Tune IP, do LVDT/stepper calibration.
  • Remove First Contact, try OL.

Mitaka: Fabian, Hirata-san

  • Design ballast for LBB.
  • Design improved PI yaw adjustment.
  • SR procurement.

Plan for week of 10/10

Holiday Mon 10/9, Open Day prep Fri 10/13.

  • TFs, final preparation for alignment in week of 10/16.

Plan for week of 10/16

Kamioka: all but Mark

  • Work with alignment team.

Vacation Info

Mark: 10/16-24

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