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Revision 75 as of 2017-06-27 11:16:15
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BS PI Geo #0 ~ #2
BS PI LVDT #0 ~ #2
BS PI Geo #0 ~ #2 ;
BS PI LVDT #0 ~ #2 ;

VIS Type B Near Term To-Do List

Archived To-Do Items

Every Week

Coming Weeks

Preparation for Real BS Hang

Preparation for SR Installation

Every Week

Facilities

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

Coming Weeks 2017-06-26

Facilities

Design/Documentation/Planning

  • Design final BF/SF ballast mass assuming BF can be made to work without rebuild (Fabian).
  • Finish assembly drawing for LBB and LBB damper ring and post on JGWDoc (Hirata-san).
  • Do version of 3D CAD with test-hang arrangement of suspension and LBB damper stuff (Hirata-san).
  • Do version of 3D CAD with final-hang arrangement of suspension and LBB damper stuff (Hirata-san).

BS Prism/Flag gluing

  • Push Hirose-san to set exact date.
  • Organize transport company for Kashiwa->Kamioka

  • Organize NAOJ vehicle for Mitaka->Kashiwa

  • Collect all items required.
    • Mirror box.
    • Prisms.
    • Stub flags.
    • Magnets: SmCo, 2 mm diameter, 3 mm long

    • Prism jigs
    • Flag jigs
  • Glue magnets to flags, 2 N, 2 S.
  • Organize clean suits.
    • Make a list of people's sizes:
      • Mark: LL, 29 cm
      • Fabian: L, 26.5 or 27 cm
      • Hirata: M, 25.5 cm
      • Enzo: L, 27 or 28 cm
    • Get ones at Mitaka laundered?
    • Get Mark/Enzo to bring from Kamioka?

Main Assembly

  • Adjust pitch/yaw/vertical of dummy optic.
  • Crane tank lid on.
  • Start TFs.

Electronics

  • Wash extra F-F gender benders.

  • Fix broken picomotor cable.

  • Install new LVDT driver and set gains.
  • Document LVDT driver rebuild and other changes.
  • Debug all cabling!
  • Get pico drive screens fixed (Miyo-kun)
  • Sort out naming convention for PI LVDTs, geophones and horizontal steppers.

BS PI Geo #0 ~ #2 ; BS PI LVDT #0 ~ #2 ; BS PI Stepper #0 ~ #2

LSOL

  • Assist Simon with hardware installation of LSOL.
  • Assist Simon with modifications to realtime model for LSOL.

Real-time and SUMCON models

  • Derive and install PI LVDT matrices.
  • Check LSOL section of k1visbs model.

Real BS Hang Tasks

Major Tasks

  • Final ballast mass design/production for BF and SF (Fabian, Hirata-san).
  • Get final OSEM cables (six of 1.7 m, two of 2.2 m, two of 2.4 m; Sato-san).
  • Possible rebuild of BF and/or SF
    • Set up build/test stand for filters.
    • Get filter test weights.
    • Find spare BF blade(s).
  • Prepare real BS:
    • Coordinate with Hirose-san.
    • Book transport of mirror (Kashiwa to KAGRA)
    • Gather mirror box, gluing supplies, prisms, magnets, new flags, new flag jigs.
    • Solve problem of lack of scribe line on one side of BS (Mark, Hirata-san).
    • Organize cleanroom gear for Kashiwa trip(s).
    • Put magnets in flags.
    • Glue flags/prisms at Kashiwa.
  • Reclean stuff:
    • PI (remove Kapton tape etc, etc).
    • LLB damper stuff, especially Cu segments.
  • Try rearranging arc weights to make room for magic wand (3D CAD or actual weights; Fabian or Hirata).
  • If needed based on previous, order longer threaded rods for arc weights on PI (Hirata).
  • Calibrate PI vertical LVDT.
  • Set yoke on PI vertical LVDT (if necessary).
  • Calibrate PI horizontal LVDTs.
  • Unlock BF keystone and try running BF fishing rod to fix sag problem.

Minor Tasks

Mechanical

  • Get clean bag laundered.
  • Swap out temporary ballast mass in BF, SF.
  • Return/replace borrowed parts:
    • Lock washers for LBB dampers
    • Temporary ballast mass (dog clamps) in BF.
    • Wide-mouth OSEMs from RM to Akutsu-san
  • Adjust height of crossbars below BF.
  • If possible, fix galled pole in BF level of EQ stop.
  • Swap in new F0-SF maraging rod (with 8-mm heads) and new receptacles to match.
  • Check inside SF for lost ruler.
  • Tighten PI yaw return spring.
  • Get Cu O-rings for feedthroughs.

Electrical

  • Decide final in-vacuum and in-air cable routing (Enzo).
  • Calibrate all LVDTs (Enzo, Mark).
  • Remove cling wrap in BF and install vacuum-compatible heat shrink.
  • Remove cling wrap on connections for PI vertical stepper and install vacuum-compatible heat shrink (needs wider diameter heat shrink or smaller pins).
  • Rewire PI horizontal steppers with vacuum-compatible cable.
  • Adjust yoke on BF to put top of secondary at 6 mm above top of baseplate (or to give ≈0 counts at nominal height).

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.
  • Create a proper DAC Monitor MEDM screen.
  • Improve ADC Monitor MEDM screen.

SR Prep Tasks

Design/Purchasing

  • Do rough mass budget for SR2/SR3/SRM.
  • Design SR assembly frame.
  • Design final SF ballast masses (Fabian).

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