Differences between revisions 136 and 188 (spanning 52 versions)
⇤ ← Revision 136 as of 2017-04-07 13:21:26 →
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Editor: MarkBarton
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← Revision 188 as of 2017-09-08 14:22:47 → ⇥
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Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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At Kamioka (Mark, Fabian, Enzo, Perry, Hirata-san):
 * We set things up again after the floor coating work.
 * We moved the PI into the second floor of the cleanbooth:
  * We cleared a path for the forklift (moving the portable cleanroom, worktable, power cables, vacuum pumps and other obstacles).
  * We got Saito-sensei to move the PI to the +Y side of the cleanbooth.
  * We washed and cling-wrapped a pallet.
  * We got Miyoki-san to disconnect the cables and curtain blocking the crane slot (and reconnect them afterwards).
  * We added some temporary crossbars in the top of the assembly frame and stored the SF cap on them to get it out of the way.
  * We craned in the pallet and set it up to bridge three floor joists.
  * We craned in the PI using Saito-san's adapter.
   * We couldn't find the original screws for the three PI transport plates so we substituted some others - fortunately there was no galling.
   * We had to connect the adapter to the crane with a sling because the ring for the hook was slightly too small).
 * We did a lot of cabling work:
  * We routed all the BF cables over the BF cap, up through the cable clamp on the SF-BF rod and up to the SF. (We had to redo a few because the Type 3 cable was at the flange end instead of the Type 1.)
  * We connected up the SF LVDT and FR stepper.
  * We started on rebalancing the BF (which had been perturbed by the weight and tension of all the cables). We got it rather better, but it needs more work.
  * We made another batch of anti-feedthrough adapters.		 At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun, Kozu-kun):
 * We characterized the remachined LBB blades, chose three and installed them in the LBB blade units in the PI.
 * We removed all sticky labels from the PI and cleaned the affected areas (and as much as possible of the rest of the surface) with ethanol.
 * We rearranged the arc weights on the PI to make space for the magic wand and installed the magic wand.
 * We rearranged the magnets on the SF damper ring to suit three Cu segments (instead of two as in the test hang).
 * We put proper vacuum-compatible tubing around all the stepper motor connections on the top of the PI (replacing cling wrap).
 * We craned out the SF temporarily and retrieved the lost PEEK cable clamp collet from the BF.
 * We closed the BF, craned the SF back in, and hooked the BF/..., this time with the hex cable clamp.
 * We routed cables from the BF via the hex cable clamp to the SF level.
 * We adjusted the BF trim mass for pitch, roll and vertical, and got the IRM hanging symmetrically around the IM.
 * We adjusted all the IRM OSEMs laterally and in/out.
 * We calibrated the SF LVDT and tested the SF FR stepper.
 * We suspended the SF/... section and weighed it but found the old 7-mm maraging rod adapter did not hold it at the center, so we had to lift it with slings and could not accurately trim it for pitch/roll.
 * Therefore we brought forward the craning in of the PI with the SF damper ring hanging from it.
 * We suspended the SF successfully from the PI and unlocked the F0 keystone to check the mass budget. We needed about 1.5 kg extra, which is about right considering the hex cable clamp and cables.
 * However we had to leave out the F0-SF hex cable clamp because of a bad thread on the inside of the cap. Hirata-san will make a new cap by enlarging the 7-mm hole in an old cap to 8 mm.
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==== Plan for coming weeks ====
For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]].		 ==== Plan for week of 9/4 ====
==== Plan for week of 9/13 ====
Mark (except Wed), Fabian (except Mon, Tue), Enzo, Ohishi-san (except Mon-Wed), Hirata-san, Yoshioka-kun (Tue, Wed, Fri), Kozu-kun
 * Reinstall F0-SF rod, this time with hex cable clamp.
 * Route cables.
 * Adjust SF trim mass, adjust tilt and vertical.
 * Adjust SF damper gap.
 * Cable and test IP LVDTs.
 * Cable and test F0 LVDT.
 * Cable and test PI steppers.
 * Cable and test geophones.
 *
  
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Week of 4/10:
 * Hirata-san does scissor lift training 4/10.
 * Perry in Tokyo 4/10.
 * Debug/fix dead OSEM channel, TM-H4.
 * Debug BF/SF LVDTs.
 * Adjust BF pitch/roll.
 * Do TF from SF LVDT actuation.
 * Install temporary ballast mass in SF.
 * Lift SF/BF/... section and check total weight and SF balance.
 * Continue swap of PI LVDT connectors (female->male)
 * Start preparing LBB spring units.
 * Install pico drivers in rack, create MEDM interface (with Miyo-kun), and undo temporary connection of picos to old controller and joystick.
Week of 4/17:
 * Crane in PI.
 * Connect SF/BF... section.
 * Temporarily remove PI and adjust SF ballast if necessary.
 		 ==== Vacation Info ====
Mark: 10/16-24

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Past week report

At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun, Kozu-kun):

  • We characterized the remachined LBB blades, chose three and installed them in the LBB blade units in the PI.
  • We removed all sticky labels from the PI and cleaned the affected areas (and as much as possible of the rest of the surface) with ethanol.
  • We rearranged the arc weights on the PI to make space for the magic wand and installed the magic wand.
  • We rearranged the magnets on the SF damper ring to suit three Cu segments (instead of two as in the test hang).
  • We put proper vacuum-compatible tubing around all the stepper motor connections on the top of the PI (replacing cling wrap).
  • We craned out the SF temporarily and retrieved the lost PEEK cable clamp collet from the BF.
  • We closed the BF, craned the SF back in, and hooked the BF/..., this time with the hex cable clamp.
  • We routed cables from the BF via the hex cable clamp to the SF level.
  • We adjusted the BF trim mass for pitch, roll and vertical, and got the IRM hanging symmetrically around the IM.
  • We adjusted all the IRM OSEMs laterally and in/out.
  • We calibrated the SF LVDT and tested the SF FR stepper.
  • We suspended the SF/... section and weighed it but found the old 7-mm maraging rod adapter did not hold it at the center, so we had to lift it with slings and could not accurately trim it for pitch/roll.
  • Therefore we brought forward the craning in of the PI with the SF damper ring hanging from it.
  • We suspended the SF successfully from the PI and unlocked the F0 keystone to check the mass budget. We needed about 1.5 kg extra, which is about right considering the hex cable clamp and cables.
  • However we had to leave out the F0-SF hex cable clamp because of a bad thread on the inside of the cap. Hirata-san will make a new cap by enlarging the 7-mm hole in an old cap to 8 mm.

Plan for week of 9/4

Plan for week of 9/13

Mark (except Wed), Fabian (except Mon, Tue), Enzo, Ohishi-san (except Mon-Wed), Hirata-san, Yoshioka-kun (Tue, Wed, Fri), Kozu-kun

  • Reinstall F0-SF rod, this time with hex cable clamp.
  • Route cables.
  • Adjust SF trim mass, adjust tilt and vertical.
  • Adjust SF damper gap.
  • Cable and test IP LVDTs.
  • Cable and test F0 LVDT.
  • Cable and test PI steppers.
  • Cable and test geophones.

Vacation Info

Mark: 10/16-24

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