Differences between revisions 157 and 208 (spanning 51 versions)
⇤ ← Revision 157 as of 2017-06-15 16:21:47 →
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At Kamioka (Mark, Fabian, Enzo, Hirata-san):
 * Hirata-san and Sekine-san moved the tank lid and service port ring to the pallet with the crane and covered the open tank with the spare clean bag.
 * Hirata-san and Mark got the LBB damper rings assembled and installed. A joint part for the Cu ring needed to have holes enlarged because the hole pattern did not quite match that on the half-ring. The magnet ring is hanging in the chamber and the Cu ring is attached below it with clamps, ready to receive the rods that will hang down from the PI.
 * Hirata-san recounted all the unused cables.
 * Hirata-san installed the outrigger parts on the LBB, which will receive the rods coming down from the damper ring.
 * Enzo and Mark tested all the stepper motors.
 * Enzo and Mark debugged the PI horizontal LVDTs. One LVDT had a flaky connection and one card in the LVDT driver had three dead channels. Enzo created a fully working driver using parts from another driver that also had a faulty card.
 * Fabian adjusted the ballast mass on the SF to get good pitch/roll/vertical adjustment and attached it with screws.
 * Fabian set up the optical lever again (the PR2 team had repossessed the breadboard we had been using but Akutsu-san supplied another one).
 *
==== Plan for coming weeks ====
For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]].
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Week of 6/12:
 * Cabling:
  * Debug/fix PI vertical LVDTs #0 and #2.
  * Calibrate PI vertical LVDT.
  * Debug/fix geophone #1.
  * Set yoke on PI vertical LVDT (if necessary).
  * Cable and test PI yaw stepper.
  * Cable and test PI vertical stepper.
  * Cable and test PI horizontal steppers.
  * Cable and test PI horizontal LVDTs.
  * Calibrate PI horizontal LVDTs.
 * Prepare LBB.
  * Attach LBB outriggers and rod receptacles.
 * Prepare LBB Cu ring.
  * Remove from tank, fix incompletely threaded holes, reinstall in tank.
  * Lay down spacers to protect magnets (in next step).
 * Prepare LBB magnet ring.
  * Disassemble.
  * Pass pieces into tank.
  * Reassemble on top of Cu ring.
 * Install LBB damper.
  * Bind LBB damper rings together with slings.
  * Remove vacuum tank lid and ring.
  * Crane rings up to install height, hook LBB magnet ring and support LBB Cu ring by TBD method.
 * Crane suspension into tank.
 * Hook LBB Cu ring.
 * Hook LBB.
 * Crane vacuum tank lid+ring black on.
 * Remove vacuum tank lid (only).
 * Remove port covers where feedthroughs will go, move feedthroughs from assembly frame and install on vacuum tank ring.
 * Reconnect in-air cables.		  * Mark worked on SR2 planning.
 * Mark thought through what would be required to swap an optic (e.g., SRM) in situ (JGW-T1707436).
 * Hirata-san tried removing disks from IM flags (so we could reuse them in flag bases and make a complete set for SR2) but only got 1 of 4 out.
 * Hirata-san ordered more disks for IM flags.
 * Hirata-san asked for quotes on SF LBB blades.
 * Hirata-san got a reduced quote for the LBB damper rings.
 * Hirata-san received and cleaned suspension wires for the SR.
 * Fabian worked on the SR mass budget.
 * Fabian worked out the COM of the SR2 optic, and Mark used it to derive the proper prism positions.
 * Enzo and Kozu-kun worked on control filter design and installation.

==== Plan for week of 11/27 ====
 * Fabian at commissioning workshop
 * Hirata-san at Kamioka Tue-Fri to work with Mirapro on SRM LBB installation.
 * All others (Mark, Enzo, Shoda-san, Kozu-kun) at Kamioka to start SR2 assembly.
  * Mark from Mon lunchtime.
  * Kozu-kun from Mon lunchtime through Wed.
  * Mirror gluing.
  * SR2 rack setup.

==== Plan for week of 12/4 ====
 * All at Kamioka
  * IM assembly and pico test.
  * Assembly frame alignment and optical table centering.
  * OL setup.

==== Vacation Info ====
 * Mark 12/22-1/3
 * Enzo TBD, probably 12/22-1/3
 * Fabian 12/22-1/5
 * Hirata-san 12/21-22 (conference)
  

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Past week report

  • Mark worked on SR2 planning.
  • Mark thought through what would be required to swap an optic (e.g., SRM) in situ (JGW-T1707436).
  • Hirata-san tried removing disks from IM flags (so we could reuse them in flag bases and make a complete set for SR2) but only got 1 of 4 out.
  • Hirata-san ordered more disks for IM flags.
  • Hirata-san asked for quotes on SF LBB blades.
  • Hirata-san got a reduced quote for the LBB damper rings.
  • Hirata-san received and cleaned suspension wires for the SR.
  • Fabian worked on the SR mass budget.
  • Fabian worked out the COM of the SR2 optic, and Mark used it to derive the proper prism positions.
  • Enzo and Kozu-kun worked on control filter design and installation.

Plan for week of 11/27

  • Fabian at commissioning workshop
  • Hirata-san at Kamioka Tue-Fri to work with Mirapro on SRM LBB installation.
  • All others (Mark, Enzo, Shoda-san, Kozu-kun) at Kamioka to start SR2 assembly.
    • Mark from Mon lunchtime.
    • Kozu-kun from Mon lunchtime through Wed.
    • Mirror gluing.
    • SR2 rack setup.

Plan for week of 12/4

  • All at Kamioka
    • IM assembly and pico test.
    • Assembly frame alignment and optical table centering.
    • OL setup.

Vacation Info

  • Mark 12/22-1/3
  • Enzo TBD, probably 12/22-1/3
  • Fabian 12/22-1/5
  • Hirata-san 12/21-22 (conference)

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