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At Kamioka (Mark, Fabian, Enzo, Hirata-san):
 * We improvised a solution for ballast mass on the BF, using some heavy dog clamps meant for pedestals, washed and wrapped in foil. We we use them for the duration of the BS Test Hang and then swap them out for custom masses.
 * We put back the original BF jacks (replacing the cantilevered jacks that had been borrowed from the SF level to allow access to the BF blade screws).
 * We rearranged the BS rack, closing the gaps between boxes (per request of Miyakawa-san. We also renumbered some boxes, connectors and cables so as to use zero-based numbering (#0, #1, #2,...) throughout.
 * We routed the OSEM cables into the external cable rack (rather than through the PR2 area).
 * We connected up the BF LVDT, and BF fishing rod stepper motor.
 * We installed a signal generator for the LVDT.
 * We connected the super motor driver box to the Internet and attempted to set it up, but with no success so far.
 * We found the final picomotor driver (we have been using the one from TAMA in the clean booth).
 * We found many items that we will need soon, including the copper ring for the SF.
 * We found issues with the digital system (the computer driving the rack had been changed from k1pr2 to k1bs, which causes problems) and worked with DGS to fix them. It now mostly works but the real-time model crashes from time to time.
 
==== Plan for coming weeks ====
Next week:
 * Everyone (Mark, Fabian, Enzo, Hirata-san) at Kamioka, Monday-Thursday.
 * Work on electronics, possibly suspend and weigh BF.
Week after next:
 * Everyone (Mark, Fabian, Enzo, Hirata-san) at Kamioka, Monday-Friday.
 * Add SF and suspend BF.		 At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun, Kozu-kun):
 * We disconnected the SF/... section and reinstalled the F0-SF rod with the hex cable clamp attached.
 * We debugged an issue with the actuation (the real-time model needed rebooting).
 * We routed all the SF/... cables up to the bottom of the PI, and then to the feedthroughs.
 * We unlocked the F0 keystone and experimented to find the amount of mass needed on the SF (≈845 g).
 * We attached the SF trim mass, adjusting it laterally so that the SF was level in pitch and roll.
 * We corrected some errors on the MEDM screens (some broken links and Take/Restore Safe.snap buttons).
 * We cabled all the PI items through to the rack and did very basic testing.
 * We disconnected the security structure from the assembly frame and adjusted the PI till the SS was vertical.
 * We unlocked the IP and adjusted the PI jacks and FRs till the IP was centered.
 * We passed the halves of the LBB Cu damping ring (less the Cu) into the chamber and joined them.
 * We put the magnets on the LBB damper ring using the template.
 * We locked various combinations of keystones and measured the vertical resonance frequencies of the unlocked filters.
 * We spent time on getting the geophones working. The original descrambler adapters had gone missing, so Enzo created three new ones. We borrowed a cable to replace one that had broken. The geophone distributor (S1402167) failed (no power on the negative rail), and a replacement borrowed from SR3 (S1605513) kept switching off.

==== Plan for week of 9/13 ====
==== Plan for week of 9/19 ====
No work Mon 9/18 (敬老の日)<<BR>>
Mark, Fabian, Enzo, Ohishi-san, Hirata-san, Yoshioka-kun (Tue, Wed, Thu, Fri), Kozu-kun
 * Install LBB damper magnet rings in tank.
 * Remove tank lid.
 *
 * Install suspension.

==== 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 disconnected the SF/... section and reinstalled the F0-SF rod with the hex cable clamp attached.
  • We debugged an issue with the actuation (the real-time model needed rebooting).
  • We routed all the SF/... cables up to the bottom of the PI, and then to the feedthroughs.
  • We unlocked the F0 keystone and experimented to find the amount of mass needed on the SF (≈845 g).
  • We attached the SF trim mass, adjusting it laterally so that the SF was level in pitch and roll.
  • We corrected some errors on the MEDM screens (some broken links and Take/Restore Safe.snap buttons).
  • We cabled all the PI items through to the rack and did very basic testing.
  • We disconnected the security structure from the assembly frame and adjusted the PI till the SS was vertical.
  • We unlocked the IP and adjusted the PI jacks and FRs till the IP was centered.
  • We passed the halves of the LBB Cu damping ring (less the Cu) into the chamber and joined them.
  • We put the magnets on the LBB damper ring using the template.
  • We locked various combinations of keystones and measured the vertical resonance frequencies of the unlocked filters.
  • We spent time on getting the geophones working. The original descrambler adapters had gone missing, so Enzo created three new ones. We borrowed a cable to replace one that had broken. The geophone distributor (S1402167) failed (no power on the negative rail), and a replacement borrowed from SR3 (S1605513) kept switching off.

Plan for week of 9/13

Plan for week of 9/19

No work Mon 9/18 (敬老の日)
Mark, Fabian, Enzo, Ohishi-san, Hirata-san, Yoshioka-kun (Tue, Wed, Thu, Fri), Kozu-kun

  • Install LBB damper magnet rings in tank.
  • Remove tank lid.
  • Install suspension.

Vacation Info

Mark: 10/16-24

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