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 * Type B Past Week Summary
  * There were multiple issues with the dummy BS flag/prism gluing [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=1830 |klog]]. The sapphire prisms will need to be removed and reapplied. Hirose-san is going to organize this. He wants to try the cup that had been made for the PR2 on the actual PR2 and then see if a new cup is needed for the BS (considering the different radius).
  * Hirata-san added the optical layout information to the BS Inventor assembly. He requested tank information from Mirapro so he can continue to do SR2/3/M.
  * Fabian finished the IM assembly and started on the IRM and RM. Some of the IRM panels had been improperly wrapped and really should be re-cleaned. The MPC (multi-purpose cube) on the RM will need some rework.
  * Mark scheduled a review for Thursday 6/16.
 * Type B ongoing issues
  * Wires
   * Need to decide RM wire thickness and order BS and RM wires. Lead time is a few days from Nilaco.
  * OSEMs
  * Feedthrough Adapters
   * Need large quantity of male and female D-Sub 9, IDC ribbon connectors - Takahashi-san is getting a quote.
  * Can we make SR wire breakers bigger?
   * Fukushima-san will start on machining test soon (as of 5/27).
  * Not enough crane height problem (Hirata, Saito) - no action since last week
  * Installation stuff
   * Crane scale - quote received
   * Work platforms - RECEIVED
  * Ballast masses for payload
   * Initial batch received - ordered extra smaller ones to allow for adjustments.
  * Lower breadboard stuff
   * Installation to be incorporated into the procedure document. Mark/Takahashi to discuss.
   * Breadboard springs (in manufacture, expected end of July)
   * Nail-head parts: quote from Mirapro received, not urgent, will be combined with assembly frame order.
  * Clean bag - RECEIVED.
  * Documents
   * BS Assembly Procedure [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235| E1504235]], [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|E1504235 draft]]		 === Type B (Mark) ===
==== Past week report ====

 * Mark analyzed the QPD data from Friday 12/1 and derived matrices to diagonalize the QPD, and calibrate output in µrad. In the process an error in the IM OSEM diagonalization was discovered: the P and Y gains were low by a factor 2.
 * Mark re-zeroed the QPD after noting the micrometer readings so we can do TFs over the weekend.
 * We prepared for the SR2 gluing:
  * We aligned the SR2 in the box with the wedge on the correct side.
  * We checked that the remachined BS prism holders fit on the PR2 mirror box.
  * We checked that with Tatsumi-san's support ring, the prisms would go on at the right height.
  * We checked the new magnet jigs.
 * We glued ferromagnetic disks in a large number of IM flag tips and flag bases, and in the SR magnet jigs.
 * We also glued SR magnets in the magnet bases.

==== Plan for week of 12/11
 * Mark, Fabian, Enzo, Kozu-kun (Mon-Thu only), Hirata-san, Shoda-san at Kamioka.
 * Mirror gluing.
 * IM assembly and pico test.
 * Assembly frame alignment and optical table centering.
 * Move trolley system from SR3.
 * OL setup.

==== Plan for week of 12/18 ====
 * Shoda-san vacation
 * Mark, Fabian, Enzo, Kozu-kun at Kamioka Mon-Wed.

==== Vacation Info ====
 * Mark 12/22-1/3
 * Enzo, 12/21-12/27 (but ''not'' 12/28)
 * Fabian 12/22-1/5
 * Hirata-san 12/21-22 (conference)
 * Shoda-san 12/18-21
  

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Past week report

  • Mark analyzed the QPD data from Friday 12/1 and derived matrices to diagonalize the QPD, and calibrate output in µrad. In the process an error in the IM OSEM diagonalization was discovered: the P and Y gains were low by a factor 2.
  • Mark re-zeroed the QPD after noting the micrometer readings so we can do TFs over the weekend.
  • We prepared for the SR2 gluing:
    • We aligned the SR2 in the box with the wedge on the correct side.
    • We checked that the remachined BS prism holders fit on the PR2 mirror box.
    • We checked that with Tatsumi-san's support ring, the prisms would go on at the right height.
    • We checked the new magnet jigs.
  • We glued ferromagnetic disks in a large number of IM flag tips and flag bases, and in the SR magnet jigs.
  • We also glued SR magnets in the magnet bases.

==== Plan for week of 12/11

  • Mark, Fabian, Enzo, Kozu-kun (Mon-Thu only), Hirata-san, Shoda-san at Kamioka.
  • Mirror gluing.
  • IM assembly and pico test.
  • Assembly frame alignment and optical table centering.
  • Move trolley system from SR3.
  • OL setup.

Plan for week of 12/18

  • Shoda-san vacation
  • Mark, Fabian, Enzo, Kozu-kun at Kamioka Mon-Wed.

Vacation Info

  • Mark 12/22-1/3

  • Enzo, 12/21-12/27 (but not 12/28)

  • Fabian 12/22-1/5
  • Hirata-san 12/21-22 (conference)
  • Shoda-san 12/18-21

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