Differences between revisions 80 and 246 (spanning 166 versions)
⇤ ← Revision 80 as of 2016-11-03 15:16:08 →
Size: 1053
Editor: MarkBarton
Comment:
← Revision 246 as of 2018-03-09 13:42:04 → ⇥
Size: 3090
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
Line 5: Line 5:
 * Type B Past Week Summary
  * Mark updated the BS circuit diagram [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3600|D1503600]]:
   * Added information on the binary IO.
   * Renamed channels to conform to Okutomi-kun's new scheme.
   * Made the ADC/DAC channel assignment consistent and more logical.
   * Updated the stepper motor sections with info about the new driver chassis.
  * Mark and Hirata-san worked on collecting parts and tools that will be needed for cabling of the BS next week. (11 special-purpose cables need to be made for the picos/steppers/OSEMs/LVDT on the RM/IRM/IM/BF and, time permitting, 2 more for the SF.)
  * Mark worked on schedule.
  * Mark updated the installation procedure with lessons learned from the last few weeks.
  * Mark downloaded Hirata-san's Inventor model of the BS in the tank and starting thinking about installation of the suspension and lower bread board.		 === Type B (Mark) ===
==== Report for week of 3/5 ====
 * Mark finished -v2 of the schedule ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779| L1807779]]).
 * We removed the non-vacuum-compatible ballast mass from the BS tank.
 * We secured all the PR2 feedthrough connections with screws.
 * We grabbed an extra empty rack for SRM and set it up next to the one for SR3 (we will add boxes next week).
 * We calibrated the SR2 SF LVDT sensing and actuation, and the FR.
 * We measured the bounce frequencies of the SF with and without the cap, and the bounce frequency of the BF.
 * We put the SF cap on and lifted and weighed the SF/... section.
 * However we were unhappy with how the cap had to be forced on and off and how it lowered the load capacity (≈-433 g) and resonance frequency (0.271 Hz-> 0.23 Hz).
 * We tried the cap left over from B2-3 used in one of the PRs, which was slightly better but still not great.
 * We measured diameter of the original cap (B2-2) and the new one (B2-3). The original cap was almost exactly 700 mm in internal diameter, and the new one was about 0.2 mm wider.
 * We moved the filter building bench and tools into the SRM area and started the rebuild of the two remaining BFs (the one from the BS Test Hang and the one with the tilted keystone).
 * Mark worked on slides for the ASJ and LVC meetings.
 * The SRM mushroom work was postponed due to other demands on the time of Sawada-san-tachi and Mirapro.

==== Plan for week of 3/12 ====
 * Shoda-san at Mitaka.
 * Mark at ASJ (Chiba) Fri, then Mitaka.
 * Others Kamioka Mon-Thu
 * F2F VIS Meeting and Farewell Party for Fabian at Mitaka on Friday.
 * --
 * Install boxes in SR3 and SRM racks.
 * Lay SR3 in-air cabling.
 * Continue rebuild of BFs.
 * Ship dummy BS to Mitaka.

==== Plan for week of 3/19 ====
 * Fujii-kun and Tanioka-kun join.
 * Mark at LVC meeting
 * Fujii-kun at Kamioka
 * All others at Mitaka
 * --
 * Put four geophones in pods.
 * Make two sets of IM OSEMs
 * Make last in-air pico adapter cable
 * Make three in-air stepper splitter cables for SR2, SR3 and SRM.
 * Set up Dummy BS prism removal.


==== Plan for week of 3/26 ====
 * Mark vacation.
 * Shoda-san at Mitaka
 * Others at Kamioka
 * --
 * SF Check
  * Check load capacity.
  * Check fit of caps.
  * Add cable clamps to bases.
  * Add cable clamps and Cu segments to caps (only if they fit well).
  * Cable LVDTs and steppers.

==== 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)
 * Hirata-san vacation, Mon 3/5.
 * 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 3/5

  • Mark finished -v2 of the schedule (L1807779).

  • We removed the non-vacuum-compatible ballast mass from the BS tank.
  • We secured all the PR2 feedthrough connections with screws.
  • We grabbed an extra empty rack for SRM and set it up next to the one for SR3 (we will add boxes next week).
  • We calibrated the SR2 SF LVDT sensing and actuation, and the FR.
  • We measured the bounce frequencies of the SF with and without the cap, and the bounce frequency of the BF.
  • We put the SF cap on and lifted and weighed the SF/... section.

  • However we were unhappy with how the cap had to be forced on and off and how it lowered the load capacity (≈-433 g) and resonance frequency (0.271 Hz-> 0.23 Hz).

  • We tried the cap left over from B2-3 used in one of the PRs, which was slightly better but still not great.
  • We measured diameter of the original cap (B2-2) and the new one (B2-3). The original cap was almost exactly 700 mm in internal diameter, and the new one was about 0.2 mm wider.
  • We moved the filter building bench and tools into the SRM area and started the rebuild of the two remaining BFs (the one from the BS Test Hang and the one with the tilted keystone).
  • Mark worked on slides for the ASJ and LVC meetings.
  • The SRM mushroom work was postponed due to other demands on the time of Sawada-san-tachi and Mirapro.

Plan for week of 3/12

  • Shoda-san at Mitaka.
  • Mark at ASJ (Chiba) Fri, then Mitaka.
  • Others Kamioka Mon-Thu
  • F2F VIS Meeting and Farewell Party for Fabian at Mitaka on Friday.
  • --
  • Install boxes in SR3 and SRM racks.
  • Lay SR3 in-air cabling.
  • Continue rebuild of BFs.
  • Ship dummy BS to Mitaka.

Plan for week of 3/19

  • Fujii-kun and Tanioka-kun join.
  • Mark at LVC meeting
  • Fujii-kun at Kamioka
  • All others at Mitaka
  • --
  • Put four geophones in pods.
  • Make two sets of IM OSEMs
  • Make last in-air pico adapter cable
  • Make three in-air stepper splitter cables for SR2, SR3 and SRM.
  • Set up Dummy BS prism removal.

Plan for week of 3/26

  • Mark vacation.
  • Shoda-san at Mitaka
  • Others at Kamioka
  • --
  • SF Check
    • Check load capacity.
    • Check fit of caps.
    • Add cable clamps to bases.
    • Add cable clamps and Cu segments to caps (only if they fit well).
    • Cable LVDTs and steppers.

To-Do Lists, Schedule

Vacation Info

  • Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun)
  • Hirata-san vacation, Mon 3/5.
  • Fabian vacation, 3/26-4/27 (then gone).

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