Differences between revisions 191 and 205 (spanning 14 versions)
⇤ ← Revision 191 as of 2017-09-15 13:27:49 →
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Editor: MarkBarton
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← Revision 205 as of 2017-11-17 14:03:37 → ⇥
Size: 1204
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun, Kozu-kun):
 * We disconnected the SF/... section and reinstalled the F0-SF rod with the hex cable clamp attached.
 * We debugged an issue with the actuation (the real-time model needed rebooting).
 * We routed all the SF/... cables up to the bottom of the PI, and then to the feedthroughs.
 * We unlocked the F0 keystone and experimented to find the amount of mass needed on the SF (≈845 g).
 * We attached the SF trim mass, adjusting it laterally so that the SF was level in pitch and roll.
 * We corrected some errors on the MEDM screens (some broken links and Take/Restore Safe.snap buttons).
 * We cabled all the PI items through to the rack and did very basic testing.
 * We disconnected the security structure from the assembly frame and adjusted the PI till the SS was vertical.
 * We unlocked the IP and adjusted the PI jacks and FRs till the IP was centered.
 * We passed the halves of the LBB Cu damping ring (less the Cu) into the chamber and joined them.
 * We put the magnets on the LBB damper ring using the template.
 * We locked various combinations of keystones and measured the vertical resonance frequencies of the unlocked filters.
 * We spent time on getting the geophones working. The original descrambler adapters had gone missing, so Enzo created three new ones. We borrowed a cable to replace one that had broken. The geophone distributor (S1402167) failed (no power on the negative rail), and a replacement borrowed from SR3 (S1605513) kept switching off.
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==== Plan for week of 9/19 ====
No work Mon 9/18 (敬老の日)<<BR>>
Mark, Fabian, Enzo, Ohishi-san, Hirata-san, Yoshioka-kun (Tue, Wed, Thu, Fri), Kozu-kun
 * Double check BS pitch with OL.
 * Adjust SF damper ring to correct gap.
 * Install lock nuts on F0 GAS FR at TBD positions.
 * Lock BF and F0 keystones (but ''not'' SF keystone).
 * Lock RM to BS and IRM to IM.
 * Lock RM, IRM and BF (but not SF) to security structure.
 * Lock IP.
 * Remove F0 keystone top plate (including yaw stepper) and immobilize SF/... in yaw.
 * Attach lifting fixture.
 * Remove BF- and SF-level crossbars.
 * Remove geophones for craning.
 * Disconnect in-vacuum cables from feedthrough and coil neatly for craning.
 * Attach lifting plates.
 * Attach Cu segments to LBB damper ring (needs Cu segments and BUMAX countersunk screws, expected 9/20).
 * Pass halves of LBB magnet ring into tank, join, and make sandwich for craning.
 * Crane tank lid off.
 * Crane LBB damper rings to top of tank and suspend.
 * Crane suspension out of assembly frame.
 * Attach LBB upper rods to LBB blade tips and rotate suspension 45° clockwise.
 * Crane suspension into tank and connect upper rods to LBB Cu ring.
 * Unclamp LBB ring "sandwich" so LBB Cu ring is suspended on upper rods.
 * Install LBB lower rods and hook LBB.
 * Measure required ballast for LBB.
 * Unlock suspension and readjust.
 * Move in-air cabling and feedthroughs and reconnect in-vacuum cables (through Cu O-rings).		  * Mark and Fabian did a huge cleanup of the SR2 area and prepared a workspace for assembling the IM.
 * Fabian did a stocktake of the screws for the SR.
  * We have all we need for the IM, except one type that can be added after the rest of the IP is assembled.
  * We have most of what we need for the rest of the payload, and Hirata-san has ordered the others.
 * Hirata-san worked on SR procurement:
  * Suspension wire
  * SR additional parts (compensation masses, clamps etc)
  * Regular, SDC and BUMAX screws.
  * Additional machining on the BS sapphire prism jig to allow it to be used on the PR/SR mirror box.
  * LBB blade design.
 * Enzo and Kozu-kun (with help from Fujii-kun) worked on export from SUMCON to Matlab, and on filter design).
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==== Plan for week of 9/25 ====
TBD		 ==== Plan for week of 11/20 ====
 * Holiday on Thu 3/23
 * All at Mitaka.
 * SR procurement, planning (Mark, Hirata-san)
 * SR mass budget (Fabian)
 * BS modeling filter design (Enzo, Kozu-kun)
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 * Debug cabling.
 * Run TFs.
 * Install LSOL?
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==== Vacation Info ====
Mark: 10/16-24		 ==== Plan for week of 11/27 ====
 * Fabian at commissioning workshop
 *

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Past week report

  • Mark and Fabian did a huge cleanup of the SR2 area and prepared a workspace for assembling the IM.
  • Fabian did a stocktake of the screws for the SR.
    • We have all we need for the IM, except one type that can be added after the rest of the IP is assembled.
    • We have most of what we need for the rest of the payload, and Hirata-san has ordered the others.
  • Hirata-san worked on SR procurement:
    • Suspension wire
    • SR additional parts (compensation masses, clamps etc)
    • Regular, SDC and BUMAX screws.
    • Additional machining on the BS sapphire prism jig to allow it to be used on the PR/SR mirror box.
    • LBB blade design.
  • Enzo and Kozu-kun (with help from Fujii-kun) worked on export from SUMCON to Matlab, and on filter design).

Plan for week of 11/20

  • Holiday on Thu 3/23
  • All at Mitaka.
  • SR procurement, planning (Mark, Hirata-san)
  • SR mass budget (Fabian)
  • BS modeling filter design (Enzo, Kozu-kun)

Plan for week of 11/27

  • Fabian at commissioning workshop

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