Differences between revisions 125 and 126
Revision 125 as of 2017-09-03 21:29:41
Size: 3308
Editor: MarkBarton
Comment:
Revision 126 as of 2017-09-05 16:26:06
Size: 3478
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
Line 24: Line 24:
 * 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.
 *
Adjust yoke on SF to put top of secondary at 6 mm above top of baseplate (or to give ≈0 counts at nominal height).
 * --(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.)--
 * --(
Adjust yoke on SF to put top of secondary at 6 mm above top of baseplate (or to give ≈0 counts at nominal height).)--
Line 34: Line 34:
 * Cable and test SF fishing rod stepper.  * --(Cable and test SF fishing rod stepper.)--
Line 40: Line 40:
 * Rearrange arc weights on PI to allow installation of magic wand.  * --(Rearrange arc weights on PI to allow installation of magic wand.)--
 * Install magic wand on PI.
Line 43: Line 44:
 * 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.
 * --(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.)--
Line 49: Line 50:
 * --(Recalibrate remachined LBB springs and choose best three.)--

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.

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

  • 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.

  • Install magic wand on PI.
  • 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.
  • Recalibrate remachined LBB springs and choose best three.

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.
  • 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

  • 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.

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