VIS Type B BS Near Term To-Do List

Archived BS To-Do Items

SR To-Do Items

Every Week

Coming Weeks

Every Week

Facilities

• Vacuum and roll floor.
• Wipe ladders.
• Tidy tools, parts.

• Get stuff from ../WishList

2017-09-04

Main Assembly Sequence

• Crane out SF.
• Raise BF cap and retrieve lost hex cable clamp PEEK piece.
• Crane in SF.
• Install SF-BF rod with hex cable clamp.
• Route cables via hex cable clamp up to below SF.
• Adjust BF ballast mass for total weight and pitch/roll.
• Look for missing screw from SF damper Cu segment in washed screws bag and reinstall.
• Calibrate SF LVDT.
• Install SF main ballast mass.
• Cable and test SF fishing rod stepper.
• Add SF cap.
• Lift and weigh SF/... section.

In parallel, time permitting

• Rearrange arc weights on PI to allow installation of magic wand.
• Check that we still have all LBB parts (there was an issue with borrowed lock nuts).
• Rearrange magnets on SF damper magnet ring for full three Cu segments.
• Find Ni-plated rods for SF damper magnet ring and do fit check.
• Find PI-SF rod with 8 mm heads and matching receptacles and do fit check.
• Lay more new in-air cabling.
• Wipe LLB damper parts with ethanol.
• Get Cu O-rings for feedthroughs.
• Figure out how to tighten PI yaw return spring.

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).
• Get pico drive screens fixed (Miyo-kun)
• Calibrate PI vertical LVDT.
• Set yoke on PI vertical LVDT (if necessary).
• Calibrate PI horizontal LVDTs.

Minor Tasks

Mechanical

• 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.

  • 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.

Electrical

• Decide final in-vacuum and in-air cable routing (Enzo).

• Calibrate all LVDTs (Enzo, Mark). BF, SF, PI-GAS, PI-H1, PI-H2, PI-H3

• 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 3.5 mm above top of baseplate (or to give ≈0 counts at nominal height).

• Adjust yoke on SF to put top of secondary at 6 mm above top of baseplate (or to give ≈0 counts at nominal height).
• Adjust yoke on PI to put top of secondary at TBD 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.