Differences between revisions 239 and 241 (spanning 2 versions)
Revision 239 as of 2018-02-19 12:56:13
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Editor: MarkBarton
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Revision 241 as of 2018-03-02 14:04:44
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Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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==== Report for week of 1/29 ====
 * Fabian and Kozu-kun tested the FR stepper, and calibrated the keystone height as a function of FR position.
 * Fabian, Hirata-san and Kozu-kun installed and adjusted the IRM, IM OSEMs and associated cables.
 * Mark derived the diagonalization matrices for SR, posted them as [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7663| T1807663]] and entered them in the on-line system.
 * Mark fixed the GASALL screen, which had some elements hardwired to BS and did not work for SR2.
 * Mark initialized the watchdog section of the SR2 model (filters, thresholds etc).
 * Mark re-entered the IM OSEM2EUL offsets and gains, which had been entered by Enzo, but had not been saved and had been lost.
 * Mark identified and fixed a bug in the SF2 whereby the watchdog trigger was derived from the AND of the error signals from the various stages instead of the OR. Thus all stages would have to overload before the watchdog tripped. All other VIS models were similarly affected, and all affected library parts have been fixed, but the other models need to be rebuilt, which should be done at the earliest opportunity, e.g., early next week after the scheduled power outage on Sun 2/18.
 * Mark fixed the indicators for the watchdog on the OVERALL screen, which also had bad logic.
 * Mark tried using Shoda-san's measurement script to do TFs. It ran successfully, but the first data set was no good because of two issues: the excitation was apparently too large (even after a reduction by 20) and the SENSALIGN matrix was not initialized.
 * Hirata-san negotiated with Kimura-san to get the SRM tank mushroom installed (this will probably happen from Tue on the week of 3/5).

==== Plan for week of 2/19 ====
 * Shoda-san at Mitaka.
 * Hirata-san at Mitaka Mon+Tue (to receive and wash parts), then Kamioka Wed-Fri.
 * Enzo back from Tuesday, at Kamioka.
 * Kozu-kun at Kamioka but limited availability (preparing poster).
 * All others at Kamioka.
 * -
 * Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw.
 * Sort out cables per Enzo's master plan.
 * 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.
==== 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.
Line 38: Line 16:
 * Enzo at Mitaka Mon 2/26.
 * '''Remove LBB temporary ballast masses from BS chamber.'''
 * Route cables up to under SF.
 * Check/adjust total mass and balance of BF/... section, especially IM OSEMs.
 * Cable and calibrate SF LVDT.
Line 39: Line 22:
 * Install cap.
Line 46: Line 30:
 * Finish recovering IM OSEM alignment.
 * Calibrate SF LVDT.
 * Weigh SF/... section.
Line 47: Line 34:
 * SR3 rack setup.  * Set up for rebuilding of two BFs.
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 * Mark at ASJ (Chiba) Fri 3/16.
 * Hirata-san vacation Mon 3/5, then Kamioka
 * 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.
Line 56: Line 47:
 * Shoda-san at Mitaka  * 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.
Line 59: Line 54:
 * Mark ????
 * Shoda-san, Fabian at Mitaka
 * Others ???
 * 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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 * Enzo 1/30-2/19.
 * Hirata-san vacation Mon 3/5
 * Fabian 3/26-4/27 vacation (then gone).
 * 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 2/26

  • Shoda-san at Mitaka.
  • -
  • Enzo at Mitaka Mon 2/26.
  • Remove LBB temporary ballast masses from BS chamber.

  • Route cables up to under SF.
  • Check/adjust total mass and balance of BF/... section, especially IM OSEMs.
  • Cable and calibrate SF LVDT.
  • Add Cu segments to SF cap.
  • Install cap.
  • Lift SF/... section and check total mass and balance.

Plan for week of 3/5

  • Shoda-san at Mitaka.
  • Hirata-san vacation Mon 3/5, then Kamioka
  • Others at Kamioka.
  • -
  • Finish recovering IM OSEM alignment.
  • Calibrate SF LVDT.
  • Weigh SF/... section.
  • 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 2022-09-02 09:11:42 by fabian.arellano)