Differences between revisions 89 and 90
Revision 89 as of 2017-07-10 10:26:30
Size: 4773
Editor: MarkBarton
Comment:
Revision 90 as of 2017-07-10 22:23:11
Size: 4941
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
Line 27: Line 27:
 * Search for prisms (Mark/Enzo).
Line 32: Line 33:
 * Organize new OL for setting BS pitch.
 * Solve magic wand problem.
   * Try rearranging arc weights to make room for magic wand (3D CAD or actual weights; Fabian or Hirata-san).
   * If needed based on previous, order longer threaded rods for arc weights on PI (Hirata-san).
   * Alternatively, have magic wand cut down (Hirata-san).
 * Try cut-down prisms with gluing jig (Mark/Enzo).
 * Organize new OL for setting BS pitch (Fabian).
 * Order longer threaded rods for arc weights on PI (Hirata-san).
Line 51: Line 50:
  * Measure total load capacity (see Main Assembly section).   * --(Measure total load capacity (see Main Assembly section))--.
Line 55: Line 54:
 * Document LVDT driver rebuild and other changes.  * --(Document LVDT driver rebuild and other changes.)--
Line 58: Line 57:
 * Experiment with rearranging arc weights to accommodate magic wand.
 *
Remove arc weights; load onto LBB; measure total load capacity.
 *
Unload arc weights and store.
 * Search for wire (Mark/Enzo).
 * --(
Experiment with rearranging arc weights to accommodate magic wand.)--
 * --(
Remove arc weights; load onto LBB; measure total load capacity.)--
 * --(
Unload arc weights and store.)--
 * --(Disconnect cables (Mark/Enzo).)--
 * --(Connect tank lid to tank ring (Mark/Enzo).)--
Line 62: Line 64:
  * Remove screw feet.
  * Replace blocks.
  * --(Remove screw feet.)--
  * --(Replace blocks.)--
Line 67: Line 69:
 * Crane out suspension.
 * Crane down rings.
 * Remove rings.
 * Send rings for recleaning.
 * Reinstall AF crossbars and jacks.

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 2017-07-10

Facilities

BS Prism/Flag gluing

  • Search for prisms (Mark/Enzo).
  • Clean magnet jigs, prisms (Hirata).
  • Assemble (with glue) magnet jigs. (Mark)
  • Glue flags/prisms.

Design/Documentation/Planning

  • Try cut-down prisms with gluing jig (Mark/Enzo).
  • Organize new OL for setting BS pitch (Fabian).
  • Order longer threaded rods for arc weights on PI (Hirata-san).
  • Final ballast mass design for BF and SF.
    • Do revised drawings (Hirata-san).
    • Decide final numbers.
    • Get quote.
    • Place order.
  • Final ballast mass for IM.
    • Final design (Fabian).
    • Drawings (Hirata-san).
    • Get quotes (Hirata-san)
    • Place order (Hirata-san).
  • Do version of 3D CAD with final-hang arrangement of suspension and LBB damper stuff (Hirata-san).
  • Finish assembly drawing for LBB and LBB damper ring and post on JGWDoc (Hirata-san).
  • LBB ballast mass.
    • Research real payload.
    • Measure total load capacity (see Main Assembly section).

    • Do improved mass budget.

Electronics

  • Document LVDT driver rebuild and other changes.

Main Assembly

  • Search for wire (Mark/Enzo).
  • Experiment with rearranging arc weights to accommodate magic wand.

  • Remove arc weights; load onto LBB; measure total load capacity.

  • Unload arc weights and store.

  • Disconnect cables (Mark/Enzo).

  • Connect tank lid to tank ring (Mark/Enzo).

  • Dismantle LBB and rings.
    • Remove screw feet.

    • Replace blocks.

    • Unhook.
  • Reinstall spacers and clamps on LBB damper rings.
  • Unhook rods supporting LBB intermediate ring.
  • Crane out suspension.
  • Crane down rings.
  • Remove rings.
  • Send rings for recleaning.
  • Reinstall AF crossbars and jacks.

Real BS Hang Tasks

Major Tasks

  • Get pico drive screens fixed (Miyo-kun)
  • Final ballast mass production for BF and SF (Hirata-san). (have quotes)
  • Design of receptacles for rods with 8 mm heads.
  • Possible rebuild of BF and/or SF
    • Set up build/test stand for filters.
    • Get filter test weights.
    • Find spare BF blade(s).
  • Reclean stuff:
    • PI (remove Kapton tape etc, etc).
    • LLB damper stuff, especially Cu segments.
  • 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.
  • Put pointy-tipped screw in RM trolley for BS
  • 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)