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 * Type B Past Week Summary
  * Fabian, Mark and Liu-kun did BS installation at Kamioka:
   * They replaced the thrust bearing in the BF with a stainless version. While replacing the picomotor spring, they found several issues with screws.
   * They removed the sheet metal cable clamp on the bottom of the BF and installed a redesigned one.
   * They installed the "flying saucer" cable clamp on the maraging rod between the IM and BF, and attached the cables. There was an issue with the cables from the bottom OSEMs, which are too short by about 300 mm.
   * They suspended the IM. Relative to the mass budget, about 700 g of trim mass had to be taken off to get good balance. There was also a problem with rubbing. It turned out that the keystone and the attached central PEEK coil former for the LVDT were at an angle, and the inside of the coil former was fouling on the outside of the pole piece for the magnets. It's not yet clear why the keystone was misaligned.
  * Hirata-san:
   * Made drawings of (revised) stub flag gluing jigs.
   * Worked on BS full-assembly drawings for Saito-sensei.
   * (For other groups)
    * Made a 3D model of maraging wires.
    * Finished making drawings of PRM inner frame.
    * Worked on re-setting up PC after crash.
 * 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) ===
==== Report for week of 3/26 ====
Line 31: Line 8:
  BFs:

 * BF No. 1:
  * Fujii-san finished tuning. Optimal load: 52.15[kg]. Resonance frequency: 0.37[Hz]. Optimal height: 64.7[mm].
  * We wired the LVDT, Picomotor and Steppermotor.
  * We measured the keystone tilt at different points and the diferences are within 0.1[mm]
  * We added cable clamps to the base.

 * BF No.7:
  * Fujii-san replaced the blades corresponding to the BS and for the SR type blades.
  * The yoke position was corrected.
  * The fishing rod was assembled.
  * Compression tuning is ongoing.

SFs:

 * Hirata-san and Tanioka-san set up the frame to check the SFs.

 * SF (B2-5):
  * Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap. The optimal load changes about 250[g].
  * We measured the keystone tilt at different points, and the diferences are within 0.1[mm]

 * SF (B2-6):
  * Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap (On going?).
  * We measured the keystone tilt at different points, and the diferences are within 0.3[mm]

SR3/SRM:

 * Kozu-kun and Enzo finished the SR3 in-air cabling.

 * Enzo prepared the SR3 and SRM rack in parallel (On going).

BS:

 * Kozu-kun and Enzo helped Enomoto-san troubleshooting the BS Oplev issue (On going).


 * We finished the SR3 in-air cabling.

==== Plan for week of 4/2 ====
 * Mark at Mitaka Mon, Kamioka from Tue.
 * Shoda-san at Mitaka
 * Others at Kamioka
 * --
 * Finish BFs tasks (cabling +calibration)
 * Finish SFs tasks (cabling +calibration)
 * Add cable clamps to bases.
 * Add cable clamps and Cu segments to caps (only if they fit well).
 * Build 2xIM, 2xIRM
 * Glue SR3 mirror?

==== Plan for week of 4/9 ====
 * Shoda-san at Mitaka
 * Others at Kamioka
 * --
 * Finish IMs and IRMs
 * Build 1xRM

==== Plan for week of 4/16 ====
 * Start SR3 Hang?

==== Plan for week of 4/23 ====
 * F0 blade prototype test

==== Plan for week of 4/30 ====
  * Golden Week!

==== To-Do Lists, Schedule ====
 * [[KAGRA/Subgroups/VIS/TypeB/March2018]]
 * [[KAGRA/Subgroups/VIS/TypeB/April2018]]
 * [[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 ====
 * Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun)
 * Fabian vacation, 3/26-4/27 (then gone).

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for week of 3/26

BFs:

  • BF No. 1:
    • Fujii-san finished tuning. Optimal load: 52.15[kg]. Resonance frequency: 0.37[Hz]. Optimal height: 64.7[mm].
    • We wired the LVDT, Picomotor and Steppermotor.
    • We measured the keystone tilt at different points and the diferences are within 0.1[mm]
    • We added cable clamps to the base.
  • BF No.7:
    • Fujii-san replaced the blades corresponding to the BS and for the SR type blades.
    • The yoke position was corrected.
    • The fishing rod was assembled.
    • Compression tuning is ongoing.

SFs:

  • Hirata-san and Tanioka-san set up the frame to check the SFs.
  • SF (B2-5):
    • Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap. The optimal load changes about 250[g].
    • We measured the keystone tilt at different points, and the diferences are within 0.1[mm]
  • SF (B2-6):
    • Hirata-san, Fujii-san and Tanioka-san checked the optimal load with and without cap (On going?).
    • We measured the keystone tilt at different points, and the diferences are within 0.3[mm]

SR3/SRM:

  • Kozu-kun and Enzo finished the SR3 in-air cabling.
  • Enzo prepared the SR3 and SRM rack in parallel (On going).

BS:

  • Kozu-kun and Enzo helped Enomoto-san troubleshooting the BS Oplev issue (On going).
  • We finished the SR3 in-air cabling.

Plan for week of 4/2

  • Mark at Mitaka Mon, Kamioka from Tue.
  • Shoda-san at Mitaka
  • Others at Kamioka
  • --
  • Finish BFs tasks (cabling +calibration)
  • Finish SFs tasks (cabling +calibration)
  • Add cable clamps to bases.
  • Add cable clamps and Cu segments to caps (only if they fit well).
  • Build 2xIM, 2xIRM
  • Glue SR3 mirror?

Plan for week of 4/9

  • Shoda-san at Mitaka
  • Others at Kamioka
  • --
  • Finish IMs and IRMs
  • Build 1xRM

Plan for week of 4/16

  • Start SR3 Hang?

Plan for week of 4/23

  • F0 blade prototype test

Plan for week of 4/30

  • Golden Week!

To-Do Lists, Schedule

Vacation Info

  • Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun)
  • Fabian vacation, 3/26-4/27 (then gone).

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