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 * Type B Past Week Summary, weeks of 9/19 and 9/26
  * Fabian, Mark and Kuwahara-kun did BS installation at Kamioka:
   * The BS clean booth was modified 9/20-21 to allow crane access. The area was fairly clean when Fabian inspected it on 9/26, but there were lots of metal flakes stuck to tape holding foil over the slit in the top of the clean bag.
   * Mark created a new Type B rtcds model and MEDM screens for the BS, adapting the TypeBb/PR3.
   * Mark and Kokeyama-san debugged the new model, fixing several issues.
   * Kuwahara-kun derived OSEM2EUL and EUL2OSEM matrices.
   * Mark set up OSEMINF filters using measured OSEM calibration data to return outputs in µm.
   * Mark took free-swing data on the TM stage to get the pendulum mode frequencies for comparison to the SUMCON model.
   * Mark and Fabian debugged the coil output to the OSEMs. (At first the coil drive was not giving output because it did not have BIO inputs and so was reading the test input, not the main input. And for a while output failed because of a loose cable to the sat amp.)
   * Mark took fixed-sine TFs to check the polarity of the coil-magnet combinations.
   * Mark installed a BIO card in the PR2 rack and added cables from the TM voltage and current monitors to as-yet unused IM OSEM inputs to check the calibration.
   * Fabian wrapped the assembly frame in cling wrap to see if it helped with wind during TFs.
  * Hirata-san:
   * Finished 3D CAD of SRM in tanks (but some work was lost due to a hard disk crash).
   * Did 3D and 2D for new maraging rods, stub flags for PR/SR (ditto re hard disk).
   * Measured/tested Type A BF #8 and started assembling #9.
 * Longer term to-do list
  * Do Inventor assembly for SRx in chamber and on assembly frame (Hirata) - SR2/SR3 DONE, SRM ongoing.
   * Part "disk security" top has to be modified - screw positions do not match.
  * Write more of payload assembly procedure (Fabian) - ONGOING
  * Write more of 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]] (Mark) - ONGOING
  * Lower breadboard installation to be incorporated into the procedure document.
  * Work on BS simulation (Fabian)
  * Do BS Simulink model (Mark, Kokeyama) - TM/IM/BF level DONE
  * Do 2D drawings of SR2 parts (Hirata)
  * Redesign SRx IM wire clamps for larger prisms, remachined RMs
  * Order SRM/PRM parts (Hirata/Shoda)
  * Order SRx fasteners (Hirata)		 === Type B (Mark) ===
==== Past week report ====
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).

==== Plan for week of 9/25 ====
TBD

 * Debug cabling.
 * Run TFs.
 * Install LSOL?

==== 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, 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.

Plan for week of 9/19

No work Mon 9/18 (敬老の日)
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).

Plan for week of 9/25

TBD

  • Debug cabling.
  • Run TFs.
  • Install LSOL?

Vacation Info

Mark: 10/16-24

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