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 * Type B Past Week Summary
  * Mark (with Enzo) did initial TFs on the BF.
   * Did fixed-sine TFs on individual OSEMs at low frequency to check actuator polarity (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=2176 | 2176]] and [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=2182|2182]]).
   * Set gains in the COILOUTF block to compensate for actuator polarity.
  * Mark (with Enzo) did a free-swing measurement on the BS after earthquake of 11/22 (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=2182|2182]]).
   * Results suspicious (noted by Shoda-san): too much difference between OSEMs - horizontal showing much less motion than vertical.
   * Possible rubbing in horizontal.
   * May need a trip to Kamioka.
  * Mark (with Enzo) made corrections and improvements to many of the MEDM screens (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=2176 | 2176]] and [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=2182|2182]]).
   * Main overview screen was not generic in many places, and links to GDS_TP screens were broken.
   * ADC monitor screen referenced bad channels with LIGO-style names.
   * DAC monitor screen was not generic and did not support IM OSEMs.
   * Watchdog IM OSEM AC band limit filter screen was a copy of the TM one.
   * Watchdog TM OSEM AC band limit filter screen appears to be getting OL signals as input - needs model changes to fix.
   * The zoomed screens for IM OSEM centering were called incorrectly and did not work.
   * Various screens had LIGO-style channel names as labels.
  * Mark did a draft of D1603600-v12 reflecting the new assignment of IM OSEMs to DAQ channels (#4-9 are now V1, V2, V3, H1, H2, H3 rather than H1, H2, ...) from last Friday (the wiring was changed to reflect the model).
  * Mark worked on schedule.
  * Hirata-san
  		 === Type B (Mark) ===
==== Report for week of 5/28 ====
 * Enzo tested the LVDT driver repaired by Tanaka-san - it was fine.
 * Fujii-kun and Enzo finished assembling a batch of 4 geophones and took test data.
 * Hirata-san modified some Promec masses (drilling out the threads on 2 of 4 holes) so we could use two layers of them inside the BF.
 * Hirata-san installed maraging rod receptacles in the LBB damper rings, and in the bottom of PIs #3 and #1 (for the SF damper rings).
 * After consulting with various people, Hirata-san installed the second half of the LBB top ring in the chamber, simply omitting the pillar and screw associated with the badly threaded hole.
 * Hirata-san took delivery of the screws for the LBB blade units, made up 9 blade units and installed 6 of them on PI #3 and #1 (for SR3 and SR2).
 * Hirata-san made up a set of PI cable clamps and installed them on PI #3 (for SR3).
 * Hirata-san removed the prototype blades from PI #3 to get ready for testing the final blades.
 * We located the #355 disk and #356 poles for the next level of the security structure up to the SF and installed the poles.
 * We installed ballast mass in the BF. After some trial and error we settled on 16 Promec masses (7.1 kg) inside the BF and 5 D1808104-4 and 3 D1808104-5 masses (540 g) on the cap.
 * Enzo and Fujii-kun did several rounds of TFs on the BF/... section of the suspension and debugged a problem with dewhitening filters not being installed in the OSEMINF filter bank.
 * Enzo installed damping filters for the IM OSEMs.

==== Plan for week of 6/4 ====
 * Mark, Enzo, Hirata-san, Kozu-kun at Kamioka Tue-Fri. (Mon is NAOJ medical checkup.)
 * --
 * Cable and test BF cap picos.
 * Crane in security structure disk at SF level.
 * Crane in SF and remove cap.
 * Hook BF and adjust total ballast.
 * Route cables through SF-BF flying saucer up to bottom of SF.
 * Adjust BF trim mass.
 * Readjust payload.
 * Take TFs.
 * Characterize final F0 blades.

==== Plan for week of 6/11 ====
 * Mark Enzo, Hirata-san, Kozu-kun at Kamioka Tue-Fri (Mon is compensation day for f2f.)
 * --
 * Any unfinished SR3 SF/... stuff.
 * Add budgeted ballast mass to SF and weigh SF/... section.
 * Cable, test SF LVDT and FR.
 * Rebuild F0 #3 for SR3.
 * Park F0 #1 (for SR2) in top of SR3 assembly frame.
 * Move F0 #3 behind SR3.

==== To-Do Lists, Schedule ====
 * [[KAGRA/Subgroups/VIS/TypeB/ToDoBS]]
 * [[KAGRA/Subgroups/VIS/TypeB/ToDoSR]]
 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779-v1 Type B Schedule (SR)]]

==== Vacation Info ====

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for week of 5/28

  • Enzo tested the LVDT driver repaired by Tanaka-san - it was fine.
  • Fujii-kun and Enzo finished assembling a batch of 4 geophones and took test data.
  • Hirata-san modified some Promec masses (drilling out the threads on 2 of 4 holes) so we could use two layers of them inside the BF.
  • Hirata-san installed maraging rod receptacles in the LBB damper rings, and in the bottom of PIs #3 and #1 (for the SF damper rings).
  • After consulting with various people, Hirata-san installed the second half of the LBB top ring in the chamber, simply omitting the pillar and screw associated with the badly threaded hole.
  • Hirata-san took delivery of the screws for the LBB blade units, made up 9 blade units and installed 6 of them on PI #3 and #1 (for SR3 and SR2).
  • Hirata-san made up a set of PI cable clamps and installed them on PI #3 (for SR3).
  • Hirata-san removed the prototype blades from PI #3 to get ready for testing the final blades.
  • We located the #355 disk and #356 poles for the next level of the security structure up to the SF and installed the poles.
  • We installed ballast mass in the BF. After some trial and error we settled on 16 Promec masses (7.1 kg) inside the BF and 5 D1808104-4 and 3 D1808104-5 masses (540 g) on the cap.
  • Enzo and Fujii-kun did several rounds of TFs on the BF/... section of the suspension and debugged a problem with dewhitening filters not being installed in the OSEMINF filter bank.
  • Enzo installed damping filters for the IM OSEMs.

Plan for week of 6/4

  • Mark, Enzo, Hirata-san, Kozu-kun at Kamioka Tue-Fri. (Mon is NAOJ medical checkup.)
  • --
  • Cable and test BF cap picos.
  • Crane in security structure disk at SF level.
  • Crane in SF and remove cap.
  • Hook BF and adjust total ballast.
  • Route cables through SF-BF flying saucer up to bottom of SF.
  • Adjust BF trim mass.
  • Readjust payload.
  • Take TFs.
  • Characterize final F0 blades.

Plan for week of 6/11

  • Mark Enzo, Hirata-san, Kozu-kun at Kamioka Tue-Fri (Mon is compensation day for f2f.)
  • --
  • Any unfinished SR3 SF/... stuff.
  • Add budgeted ballast mass to SF and weigh SF/... section.
  • Cable, test SF LVDT and FR.
  • Rebuild F0 #3 for SR3.
  • Park F0 #1 (for SR2) in top of SR3 assembly frame.
  • Move F0 #3 behind SR3.

To-Do Lists, Schedule

Vacation Info

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