Differences between revisions 125 and 126
Revision 125 as of 2018-11-17 17:29:23
Size: 2865
Editor: MarkBarton
Revision 126 as of 2018-11-20 16:16:33
Size: 2963
Editor: MarkBarton
Deletions are marked like this. Additions are marked like this.
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 * Disconnect SS from AF.
 * Raise PI on jacks.
 * Remove any remaining cable ties from SRM IP

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



  • Characterize geophones.
  • Go/no-go test of all electronics items, especially SF/... section.
  • Do vertical height budget.
  • Disconnect SS from AF.
  • Raise PI on jacks.
  • Remove any remaining cable ties from SRM IP
  • Unlock IP and center roughly.
  • Check/adjust alignment of SS.
  • Calibrate IP LVDTs.
  • Add arc weights and geophones.
  • Test geophones.
  • Improve centering/tuning of IP and SS alignment.
  • Disconnect cables.
  • Crane into tank.

SR2 (low priority)

  • Set up OL pillar, shelf and viewports (with Akutsu-san, Tue evening, 11/20).
  • Set up OL cabling.
  • Set up OL.
  • Assist MIF team with pico cables, LBB ballast.



  • Make new geophones.
  • Cable/test geophones.
  • Disconnect cables.
  • Remove crossbars.
  • Crane suspension into tank.

SR2 (not so low priority)

  • Set up OL pillar and shelf (with Akutsu-san).
  • Set up OL cabling.
  • Set up OL.
  • Add more arc weights and tweak IP centering.
  • Replace two borrowed geophones.
  • Remove tape, writing etc on PI and PI items.
  • Add new feedthrough to lower part of tank (with Izumi-san-tachi).
  • Install cable for MIF pico on LBB (with Izumi-san-tachi).
  • Add ballast mass to LBB.
  • Install manual yaw adjuster.
  • Get top plate reduced?

SR Prep Tasks - To Be Scheduled


  • Check which LVDT cards are in which boxes.
  • 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 PI yaw steppers.
  • Correct flipped connections in SRM PI LVDTs.
  • Check SR2, SR3 TM coil gains for magnet polarity compensation.
  • 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.
  • 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)