Differences between revisions 1 and 139 (spanning 138 versions)
Revision 1 as of 2016-04-12 15:09:01
Size: 65
Editor: MarkBarton
Comment:
Revision 139 as of 2017-04-27 15:53:11
Size: 1534
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
= Scraps of text for incorporation in the Vis Meeting Minutes = = Scraps of text for incorporation in the VIS Meeting Minutes =

[[KAGRA/Subgroups/VIS/MeetingNAOJ]]

=== Type B (Mark) ===
==== Past week report ====
At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san):

 * Craned in the PI.
 * Assembled the thrust bearing holder that receives the PI-SF rod. (It originally had a burr that prevented the bearing from seating properly, and so required filing and re-cleaning.)
 * Hooked the SF and lowered the jacks under the SF to suspend the SF/... section.
 * The top filter rose when unlocked, and required about 1.8 kg to send it back down. Therefore we may be OK - the top filter seems to have about 8 kg more capacity than as measured by G&M. The hex cable clamp (≈0.25 kg) and the cables between the PI and SF still have to be added, but we can get an extra 3 kg by removing one of the three Cu damper segments (and rearranging the other two).
 * Built and installed three LBB blade units.
 * Kept debugging the SF LVDT. We repaired several broken wires, but it's still not behaving correctly.

==== Plan for coming weeks ====
For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]].

Week of 5/1:
 * No activity (Golden Week).

Week of 5/8:
 * Work from Tuesday.
 * Remove PI temporarily.
 * Add magnets to upper SF damper ring.
 * Reinstall PI with damper ring.
 * Reinstall PI-SF rod, this time with hex cable clamp.
 * Install PI yaw stepper.
 * Wire up PI yaw and vertical steppers.
 * Route cables from SF to PI (may involve removing part of Cu damper).

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Past week report

At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san):

  • Craned in the PI.
  • Assembled the thrust bearing holder that receives the PI-SF rod. (It originally had a burr that prevented the bearing from seating properly, and so required filing and re-cleaning.)
  • Hooked the SF and lowered the jacks under the SF to suspend the SF/... section.
  • The top filter rose when unlocked, and required about 1.8 kg to send it back down. Therefore we may be OK - the top filter seems to have about 8 kg more capacity than as measured by G&M. The hex cable clamp (≈0.25 kg) and the cables between the PI and SF still have to be added, but we can get an extra 3 kg by removing one of the three Cu damper segments (and rearranging the other two).

  • Built and installed three LBB blade units.
  • Kept debugging the SF LVDT. We repaired several broken wires, but it's still not behaving correctly.

Plan for coming weeks

For more detail, see KAGRA/Subgroups/VIS/TypeB/ToDo.

Week of 5/1:

  • No activity (Golden Week).

Week of 5/8:

  • Work from Tuesday.
  • Remove PI temporarily.
  • Add magnets to upper SF damper ring.
  • Reinstall PI with damper ring.
  • Reinstall PI-SF rod, this time with hex cable clamp.
  • Install PI yaw stepper.
  • Wire up PI yaw and vertical steppers.
  • Route cables from SF to PI (may involve removing part of Cu damper).

KAGRA/Subgroups/VIS/TypeB/Minutes (last edited 2022-06-24 12:23:36 by fabian.arellano)