Differences between revisions 186 and 187
Revision 186 as of 2017-09-08 12:31:36
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Revision 187 as of 2017-09-08 13:41:35
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Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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 *  * We craned out the SF temporarily and retrieved the lost PEEK cable clamp collet from the BF.
 * We installed the BF.
 * 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 chad to lift it with slings and could not accurately trim it for pitch/roll.
 * We craned in 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.
 * 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.

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 craned out the SF temporarily and retrieved the lost PEEK cable clamp collet from the BF.
  • We installed the BF.
  • 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 chad to lift it with slings and could not accurately trim it for pitch/roll.
  • We craned in 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.
  • 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

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

  • Retrieve PEEK piece from BF.
  • Crane SF back in.
  • Suspend BF/IRM/IM/RM/BS.
  • Test SF FR.
  • Calibrate SF LVDT.
  • Install SF cap; route cables.
  • Lift and weigh SF/BF/IRM/IM/RM/BS.
  • Adjust SF ballast.

Plan for week of 9/13

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

  • Prepare magnet ring.
  • Bring in PI.
  • Route cables.
  • Suspend SF/..., adjust tilt of SF and total mass.
  • Adjust damper gap.

Vacation Info

Mark: 10/16-24

KAGRA/Subgroups/VIS/TypeB/Minutes (last edited 2022-04-22 13:34:51 by fabian.arellano)