Differences between revisions 120 and 229 (spanning 109 versions)
⇤ ← Revision 120 as of 2017-01-27 13:28:23 →
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Editor: MarkBarton
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← Revision 229 as of 2018-02-09 08:25:19 → ⇥
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Editor: MarkBarton
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Deletions are marked like this. Additions are marked like this.
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 * Hirata-san:
  * Received many parts from i-ject for BFRM (took pictures and took them into ATC cleanroom).
  * got quotes for PRM/SRM payload from i-ject.
  * Checked quotes and asked for some modifications.)
  * Washed parts (parts for type-A, small hexagons, screws, etc\)
  * Wiped 9 piano wires and sent to Kamioka for PR.
  * pdated Fabian's EQstop parts for BS recoilmass and updated EQstop assy drawings.
 * Fabian
  * Worked out geometry for blade adjustment.
  * Designed additional ballast masses for BS BF (and SR).
 * Mark and Enzo (at Kamioka)
  * Did two rounds of adjustment of the blades with help from Takahashi-san (one for position, one for frequency)
  * Surveyed the position of the rod using the vertical mode of the bubble level.
  * Got apparent improvement as judged at the IRM-IM EQ stops (but still not perfect).
  * Did one more round of blade adjustments (without Takahashi-san)
  * Got good agreement with IRM-IM EQ stops, so put BF cap on and raised the whole system to check for balance.
  * Found balance still fairly bad: about the same on the -X,+Y diagonal and about half on the +X,+Y diagonal (70 and 30 mm worth of motion of a single trim mass respectively; previous a bit over 70 mm each).
  * From the imbalance torques, calculated the offset of rod as 2.3 mm in the direction 22 degrees to the +X side of -Y.
  * Calculated the blade adjustments required: {-0.325194, -1.79175, 2.11695} mm
  * Prepared to apply adjustments (removed cap etc).		 === Type B (Mark) ===
==== Report for week of 1/29 ====
 * Mark made two sets of in-air pico splitter cables (each with a triple for IM and a double for BF) for SR2 and SR3.
 * Fabian, Hirata-san and Kozu-kun worked on cabling and testing the IM pitch/roll/yaw picos, the BF FR and the BF LVDT. The LVDT connections were initially unreliable and Hirata-san had to redo the pins on the coil wires.
 * Fabian installed ballast masses in the BF.
 * Mark worked on schedule.
 * Mark did inventory of the stepper motor drivers (many were not accounted for on the wiki and/or JGWDoc and one is missing) and reserved two for SR3.

==== Plan for week of 2/13 ====
 * No work Monday (建国記念の日の振替休日)
 * Enzo on vacation
 * Hirata-san at Mitaka Tue, Wed (to receive and wash parts).
 * Shoda-san at Mitaka
 * All others at Kamioka.
 * -
 * Build IRM around IM.
 * Cable/test/adjust IM OSEMs.
 * Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw.

==== Plan for week of 2/19 ====
 * Enzo back from Tuesday.
 * Shoda-san at Mitaka
 * All others at Kamioka.
 * -
 * 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.

==== Plan for week of 2/26 ====
 * Add Cu segments to SF cap.
 * Lift SF/... section and check total mass and balance.

==== Vacation Info ====
 * Enzo 1/30-2/19.
 * Fabian 4/2-4/27 vacation (then gone).

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for week of 1/29

  • Mark made two sets of in-air pico splitter cables (each with a triple for IM and a double for BF) for SR2 and SR3.
  • Fabian, Hirata-san and Kozu-kun worked on cabling and testing the IM pitch/roll/yaw picos, the BF FR and the BF LVDT. The LVDT connections were initially unreliable and Hirata-san had to redo the pins on the coil wires.
  • Fabian installed ballast masses in the BF.
  • Mark worked on schedule.
  • Mark did inventory of the stepper motor drivers (many were not accounted for on the wiki and/or JGWDoc and one is missing) and reserved two for SR3.

Plan for week of 2/13

  • No work Monday (建国記念の日の振替休日)
  • Enzo on vacation
  • Hirata-san at Mitaka Tue, Wed (to receive and wash parts).
  • Shoda-san at Mitaka
  • All others at Kamioka.
  • -
  • Build IRM around IM.
  • Cable/test/adjust IM OSEMs.
  • Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw.

Plan for week of 2/19

  • Enzo back from Tuesday.
  • Shoda-san at Mitaka
  • All others at Kamioka.
  • -
  • 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.

Plan for week of 2/26

  • Add Cu segments to SF cap.
  • Lift SF/... section and check total mass and balance.

Vacation Info

  • Enzo 1/30-2/19.
  • Fabian 4/2-4/27 vacation (then gone).

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