Differences between revisions 153 and 154
Revision 153 as of 2017-10-02 13:50:02
Size: 2841
Editor: MarkBarton
Revision 154 as of 2017-10-02 13:52:57
Size: 2764
Editor: MarkBarton
Deletions are marked like this. Additions are marked like this.
Line 24: Line 24:
=== SR2 stuff ===
 * Replace BS service port covers, or reinforce foil with tape.
 * Cling-wrap or move:
  * White plastic table
  * Writing table
  * Tall metal table

Line 33: Line 25:
 * Tidy up and cover things to prepare for SR2 crane slot work.
 * Replace BS service port covers.

VIS Type B BS Near Term To-Do List

Archived BS To-Do Items

SR To-Do Items

Every Week

Coming Weeks

Every Week


  • Vacuum and roll floor.
  • Wipe ladders.
  • Tidy tools, parts.
  • Get stuff from ../WishList


Main Assembly Sequence

  • Tidy up and cover things to prepare for SR2 crane slot work.
  • Replace BS service port covers.
  • Check for bubble level and other tools in tank.
  • Remove stickers on IP and clean with ethanol (some were missed last time).
  • Wipe rusty screws on IP LVDTs and surrounding area with ethanol-soaked wipe.
  • Check that all in-air cables are labeled.
  • Fix broken pico adapter cable?
  • If possible, reroute cable to eliminate need for with feedthrough.
  • Debug all electronics, especially actuation.
  • Check IP yaw.
  • Recheck centering of suspension in assembly frame.
  • Measure IP period; adjust ballast mass.
  • Calibrate all LVDTs (Enzo, Mark). BF, SF, PI-GAS, PI-H1, PI-H2, PI-H3

  • Calibrate IP LVDT sensing against IP LVDT actuation, IP FRs.
  • Set all EQ stops to proper clearance.
  • Get ready for full TFs.


  • Enter new IP matrices and do safe.snap.
  • Get pico drive screens fixed (Miyo-kun)
  • Update real-time model to number channels from #0.
  • Remove old OL stuff; add link to new OL stuff.
  • Remove unused screens.
  • Sort out SVN.

Tasks Not To Forget

Major Tasks

  • Update BS Install Procedure with screenshots from new on-assembly-frame 3D CAD.
  • Finish assembly drawing for LBB and LBB damper ring and post on JGWDoc (Hirata-san).
  • Figure out how to make PI yaw adjustment reliable.

Minor Tasks


  • Get clean bag laundered.
  • Put pointy-tipped screw in RM trolley for BS
  • Return/replace borrowed parts:
    • Lock washers for LBB dampers
    • Temporary ballast mass (dog clamps) in BF.
  • Swap in new F0-SF maraging rod (with 8-mm heads) and new receptacles to match.


Real-time and SUMCON models

  • Create SUMCON models for full BS and major installation milestones.
  • Create controls design description (cf LIGO-T1100378).

  • Make table of ADC/DAC assignments and check for consistency with D1503600 and k1visbs (Enzo, Mark)
  • Understand/document/debug Kokeyama-san's DIO stuff.
  • Measure LPCD and HPCD output filter response.
  • Design and install software compensation filters for LPCD and HPCD output filters.
  • Design and install GAS drift compensation filters.

KAGRA/Subgroups/VIS/TypeB/ToDoBS (last edited 2019-01-04 15:21:23 by MarkBarton)