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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 is trying the cup that had been made for the PR2 on the dummy BS. Despite not having the ideal radius of curvature, it works to confine the acetone, and we will see shortly how much soaking is required to get a prism off.
  * Akutsu-san provided stainless steel mirror panels for the dummy BS made by ATC.
  * 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.
  * Hirata-san worked on the crane height problem with Saito-sensei. They concluded that craning in the suspension is possible but will require not just the vacuum tank lid but the ≈30 cm section of tank below it to be removed.
  * Hirata-san liaised with Nakamura-san of Mirapro. Mirapro could start assembling the frame in the first week of July.
  * Hirata-san cleaned more parts and measured another filter.
  * Fabian finished the IM assembly and started on the IRM and RM. Some of the IRM panels had been improperly wrapped and will be re-cleaned. The MPC (multi-purpose cube) on the RM will need some rework.
  * Mark did a top level schedule. The BS can probably be finished roughly when promised to Ando-san earlier, but the SRs will probably take rather longer because of all the prep work that still needs to be done. It may save time overall to delay the start of the BS installation a few weeks and concentrate on parts for SR.
  * Mark released a draft (about half-finished) of [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235| JGW-E1504235 - BS Installation Procedure]].
  * Mark updated [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3600| JGW-D1503600 - BS Suspension Cabling]] with a better arrangement for the IM and BF pico motor cables, as well as various other minor fixes.
  * Mark organized 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
   * Akutsu-san is working to get wide-mouth OSEMs
  * Longer cables for BF->PI and SF->PI.
   * Takahashi-san has ordered extra connectors (due any day) and will get a company to make the cables.
  * 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) - SOLVED
  * Installation stuff
   * Crane scale - quote 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.
  * 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) ===
==== Report for the week of 3/25 ====
 * Mark and Fabian helped Fujii-kun with PR2. The problem turned out to be two broken flags. Hirata-san drew up a design for a jig to help reglue the flags in situ.
 * Fabian documented the height budget for the Type B suspension in the wiki ([[KAGRA/Subgroups/VIS/OpsManual/TypeB/SR3Data]] etc).
 * Terrence wrote up the final version of his OL diagonalization scheme.
 * Terrence worked on L2P decoupling for the TM.
 * Terrence and Mark edited the Type B Guardian to put turning on the payload damping later in the sequence, to help ensure that the OSEMs are not touching by the time they're needed (which can happen if the BF is buoyancy compensated for vacuum but the suspension is vented).
 * Mark started on a big tidy-up of the cleanbooth.
==== Plan for week of 3/25 ====
 * Mark, Fabian at Kamioka Mon-Fri.
 * Assist with PR2.
 * Work on Type B paper.
 * Tidy up.
  * Throw out foil and other garbage.
  * Gather and clean tools.
  * Gather and organize unused parts and fasteners.
  * Return all unused cables to tent.
  * Tidy up cables in rear of SR2 rack.

==== Vacation/Travel Info ====
 * Enzo's last day 3/29.
 * Terrence's last day for now, 3/29.
 * Mark compensation day for 3/21: 3/29. (He is not really typing these minutes, and anyone who sounds like him in the meeting is an impostor!)
 * Type B going-away party for Terrence/Enzo, 3/29 in Tokyo.
 * Terrence's next visit from 4/18.
 * Fabian's vacation 4/26 to 5/10.
 * Mark's vacation from about 5/22 to 6/11 (TBD).
 * Mark's final day 6/28.

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for the week of 3/25

  • Mark and Fabian helped Fujii-kun with PR2. The problem turned out to be two broken flags. Hirata-san drew up a design for a jig to help reglue the flags in situ.

  • Fabian documented the height budget for the Type B suspension in the wiki (KAGRA/Subgroups/VIS/OpsManual/TypeB/SR3Data etc).

  • Terrence wrote up the final version of his OL diagonalization scheme.
  • Terrence worked on L2P decoupling for the TM.
  • Terrence and Mark edited the Type B Guardian to put turning on the payload damping later in the sequence, to help ensure that the OSEMs are not touching by the time they're needed (which can happen if the BF is buoyancy compensated for vacuum but the suspension is vented).
  • Mark started on a big tidy-up of the cleanbooth.

Plan for week of 3/25

  • Mark, Fabian at Kamioka Mon-Fri.
  • Assist with PR2.
  • Work on Type B paper.
  • Tidy up.
    • Throw out foil and other garbage.
    • Gather and clean tools.
    • Gather and organize unused parts and fasteners.
    • Return all unused cables to tent.
    • Tidy up cables in rear of SR2 rack.

Vacation/Travel Info

  • Enzo's last day 3/29.
  • Terrence's last day for now, 3/29.
  • Mark compensation day for 3/21: 3/29. (He is not really typing these minutes, and anyone who sounds like him in the meeting is an impostor!)
  • Type B going-away party for Terrence/Enzo, 3/29 in Tokyo.
  • Terrence's next visit from 4/18.
  • Fabian's vacation 4/26 to 5/10.
  • Mark's vacation from about 5/22 to 6/11 (TBD).
  • Mark's final day 6/28.

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