Differences between revisions 166 and 204 (spanning 38 versions)
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==== Past week report ====
At Kamioka (Mark, Enzo, Yoshioka-kun):
 * We experimented with rearranging the arc weights to accommodate the magic wands and came up with a suitable scheme.
 * We used spare arc weights as extra ballast on the LBB to get it to float, and measured the height for a known load.
 * We put the blocks back under the LBB and unhooked it.
 * We moved the suspension from the tank back to the assembly frame.
 * We craned the LBB rings down onto the LBB but did not remove them yet. (This however is the last crane work in the tank until reinstallation, so the lid does not have to come off again and the pallet can be used for the PI.)
 * We put the crossbars back in the assembly frame underneath the SF and BF (and corrected an error in the height of the BF ones).
 * We checked the centering of the security frame in the assembly frame and disconnected it from the PI. One M12x35 screw galled after a few turns and will need attention.
 * Enzo started setting up the SR3 rack (with help from Yamamoto-san).
 * We received the real BS optic and gluing tools, and glued the disks and rods into the modified magnet jigs. We also tried the re-made secondary prisms in the gluing jigs and made shims to hold them more securely.		 ==== Past two weeks report ====
Kamioka (Mark, Enzo, Kozu-kun):
 * Supported IA team.
 * Replaced LPCDs for IM OSEMs with HPCDs for increased pitch/yaw range.
 * Re-zeroed OL after significant change of beam position during IA.
 * Re-laid-out OL to improve focus of lens to LEN QPD.
 * Offloaded the pitch/yaw actuation at the IM OSEMs using the IM pitch/yaw picos.
 * Enzo worked on design of control loops using the OL.
 * Kozu-kun worked on diagonalizing the OL.
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At Mitaka (Fabian and Hirata-san):
 * Hirata-san shipped the optic and gluing tools to Kamioka.
 * Hirata-san did drawings and RFQs for IM/BF/SF ballast masses
 * Fabian worked on the SRx assembly frame.		 Mitaka (Fabian, Hirata-san):
 * Fabian did mechanical design:
  * F0 FR
  * Cable clamps for the SR IP base.
  * New SR recoil ballast masses.
  * LBB ballast.
  * Update of BS 3D CAD with the as-built ballast.
 * Hirata-san
  * made and updated inventory list for SR.
  * made order list and asked some quotes.
  * Ordered some parts.
  * Talked with mirapro about SRM optical bench.
  * Made some drawings for SR preparation.
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==== Plan for week of 7/18 ====
Full team at Kamioka from Tue-Fri, except Hirata-san (Tue-Wed only).
 * Glue prisms/magnets on BS.
 * Dismantle suspension.
 * Finish setting up filter service area (mostly already done by Mirapro).
 * Move BF to filter service area, start rebuild.		 ==== Plan for week of 11/13 ====
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==== Plan for week of 7/24 ====
Full team at Kamioka from Mon-Fri, except Hirata-san (Tue-Fri) and Enzo (vacation).
 * Finish BF rebuild.
 * Recheck alignment of assembly frame and centering of optical table.
 * Install IM, suspend BS and RM. 		Enzo and Kozu-kun at Mitaka
 * Servos
 * Diagonalization of OL
 * TFs of BF
 * Documentation
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Vacation Info:
Hirata-san: Thu 7/20 through Mon 7/24
Enzo: Sat 7/22 through Sun 8/6
Fabian: Fri 8/4 through Mon 8/21
Mark: TBD Mid-Oct		 Mark and Fabian at Kamioka.
 * Mark attends commissioning workshop at U Toyama.
 * Support BF characterization work.
 * Prepare for mirror gluing.
 * Prepare for IM assembly.

Hirata-san at Mitaka
 * SR procurement.
 * Get BS prism-gluing jigs reworked for use with PR/SR mirror box.

==== Plan for week of 11/20 ====
 * Holiday on Thu 3/23
 * Fabian at commissioning workshop
 *

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Past two weeks report

Kamioka (Mark, Enzo, Kozu-kun):

  • Supported IA team.
  • Replaced LPCDs for IM OSEMs with HPCDs for increased pitch/yaw range.
  • Re-zeroed OL after significant change of beam position during IA.
  • Re-laid-out OL to improve focus of lens to LEN QPD.
  • Offloaded the pitch/yaw actuation at the IM OSEMs using the IM pitch/yaw picos.
  • Enzo worked on design of control loops using the OL.
  • Kozu-kun worked on diagonalizing the OL.

Mitaka (Fabian, Hirata-san):

  • Fabian did mechanical design:
    • F0 FR
    • Cable clamps for the SR IP base.
    • New SR recoil ballast masses.
    • LBB ballast.
    • Update of BS 3D CAD with the as-built ballast.
  • Hirata-san
    • made and updated inventory list for SR.
    • made order list and asked some quotes.
    • Ordered some parts.
    • Talked with mirapro about SRM optical bench.
    • Made some drawings for SR preparation.

Plan for week of 11/13

Enzo and Kozu-kun at Mitaka

  • Servos
  • Diagonalization of OL
  • TFs of BF
  • Documentation

Mark and Fabian at Kamioka.

  • Mark attends commissioning workshop at U Toyama.
  • Support BF characterization work.
  • Prepare for mirror gluing.
  • Prepare for IM assembly.

Hirata-san at Mitaka

  • SR procurement.
  • Get BS prism-gluing jigs reworked for use with PR/SR mirror box.

Plan for week of 11/20

  • Holiday on Thu 3/23
  • Fabian at commissioning workshop

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