Differences between revisions 87 and 88
Revision 87 as of 2018-07-18 13:28:16
Size: 3560
Editor: MarkBarton
Revision 88 as of 2018-07-18 13:38:19
Size: 3560
Editor: MarkBarton
Deletions are marked like this. Additions are marked like this.
Line 29: Line 29:
 * Calibrate F0 LVDT actuation and FR.
Line 52: Line 53:
 * Calibrate F0 LVDT actuation and FR.

VIS Type B SR Near Term To-Do List

Archived To-Do Items

Every Week

Coming Weeks

Preparation for SR Installation

Every Week


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

Coming Weeks


Main Sequence

  • Find LBB damper rods and associated parts.

  • Check/restore verticality of security structure.

  • Set SF damper magnet ring height.

  • Check/correct IP LVDT polarities.

  • Calibrate IP FR sensing.

  • Calibrate F0 LVDT actuation and FR.
  • Set safety screw and safety nut on F0 keystone; remove Kapton tape.
  • Set up optical lever.
  • Check/restore alignment of payload, especially optic pitch.
  • Do token TFs (time permitting).
  • Reset all PI FRs to midrange.
  • Lock F0 keystone.
  • Lock suspension laterally except for SF level.
  • Add IM-RM safety bar?
  • Disconnect all cables at inside of feedthroughs.
  • Remove top of tank (including service ring).
  • Set tank jacks to nominal height (50 mm).
  • Lift suspension.
  • Install LBB damper rods.
  • Crane suspension into tank.
  • Hook LBB damper rods.
  • Replace tank lid and service ring.
  • Remove tank lid leaving service ring.
  • Move feedthroughs.
  • Move cables over.
  • Remove safety bar and unlock suspension.
  • Remove First Contact?
  • Restore payload alignment, especially pitch.
  • Cable geophones.
  • Calibrate IP LVDT and FR actuation.
  • TFs!

F0/LBB/Tank Stuff

  • Add LBB ballast masses.
  • Help Sato-san with swapping IP in PI #2.
  • Crane IP to second floor.
  • Rebuild PI #2 F0.

Software Etc

SR Prep Tasks - To Be Scheduled


  • Retrieve BNC-Lemo cable from Nakano-kun.
  • Get at least one BIO Converter chassis fully connected (CONTEC BIO card, WD and stepper motor chassis) for implementation and test of stepper motor reset function.
  • Install, cable SR3 PI yaw stepper.
  • Correct flipped connections in SR2 PI LVDTs.
  • Correct flipped connections in SRM PI LVDTs.
  • Grab and configure a picomotor driver as SR2_BF
  • Get independent power supply for SR3 so SR2 can be powered back up.
  • Check SR2, SR3 TM coil gains for magnet polarity compensation.
  • Calibrate last six IM OSEMs.
  • Rebuild filter in PI #1.
  • Install clamps on PI #1.
  • Install geophone plates on PI #3.
  • Install geophone plates on PI #1.
  • Install correct IP in PI #2.
  • Rebuild filter in PI #2.
  • Install clamps on PI #2.
  • Install LBB blade units on PI #2.
  • Install geophone plates on PI #2.
  • Replace chipped magnets (12x12x12 mm) in SR3 IP, H1 and H2.

Mitaka or remotely

  • Write generic Type B Guardian; make BS and SR3 inherit from it; make analog WD optional for now (all suspensions will get them eventually).
  • Create software stepper drivers for SR3 and SRM and link to them from STEP_MASTER.adl screen.
  • Make three in-air stepper splitter cables for SR2, SR3 and SRM. [done?]
  • (Continue to) soak the sapphire prisms off the dummy BS for reuse on the SRM metal mass.
  • Set up SR2 Guardian.
  • Install damping filters for SR2.
  • Review DAC channel requests.
  • Set up SR2 Guardian.
  • Install damping filters for SR2.
  • Split SRx real-time models?


See ../WishList .

KAGRA/Subgroups/VIS/TypeB/ToDoSR (last edited 2019-01-04 15:25:56 by MarkBarton)