Differences between revisions 66 and 67
Revision 66 as of 2017-06-21 11:43:49
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Editor: MarkBarton
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Revision 67 as of 2017-06-21 11:44:43
Size: 5760
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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 * Unlock BF keystone and try running BF fishing rod to fix sag problem (Enzo, Mark).
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 * Unlock BF keystone and try running BF fishing rod to fix sag problem.

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 (2017-06-19, 2017-06-26)

Facilities

  • Remove cling wrap from stuff.

  • Plug stuff back in (charging station, KOACH filters, OL etc).

  • Power up rack.

Design/Documentation

  • 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).

Main Assembly

  • Remove crossbars below BF and SF.

  • Set SF damper to 4 mm clearance.

  • Find wrenches for vacuum tank jacks (41 mm and possibly 75 mm).
  • Adjust jacks to nominal height.

  • Do up all EQ stops etc (except SF).

  • Remove geophones (temporarily, for craning).

  • Crane suspension into tank.

  • Hook LBB Cu ring.

  • Hook LBB.
  • Crane vacuum tank lid+ring back on.
  • Remove vacuum tank lid (only) and store on pallet.
  • Add ballast to LBB.
  • Replace geophones.
  • Unlock all but IP and check pendulum is centered in security structure. Adjust with jacks.
  • Unlock IP and adjust to center with jacks.
  • Unlock BF keystone and try running BF fishing rod to fix sag problem.
  • Adjust pitch/yaw/vertical of dummy optic.
  • Start TFs.

Electronics

  • Get pico drive screens fixed (Miyo-kun)
  • Order final OSEM cables (six of 1.7 m, two of 2.2 m, two of 2.4 m; Sato-san).
  • Disconnect in-vacuum and in-air cabling from feedthroughs (label in-vacuum ones).

  • Remove port covers where feedthroughs will go, move feedthroughs from assembly frame and install on vacuum tank ring.
  • Reconnect in-vacuum cabling.
  • Adjust in-air cabling to match 135° rotation of BS.
  • Reconnect in-air cables.
  • Calibrate PI vertical LVDT.
  • Set yoke on PI vertical LVDT (if necessary).
  • Calibrate PI horizontal LVDTs.

LSOL

  • Assist Simon with hardware installation of LSOL (week of 6/26?).
  • Assist Simon with modifications to realtime model for LSOL (week of 6/26?).

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).

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)