Differences between revisions 121 and 123 (spanning 2 versions)
Revision 121 as of 2018-11-08 12:32:01
Size: 3280
Editor: MarkBarton
Revision 123 as of 2018-11-11 18:41:11
Size: 2205
Editor: MarkBarton
Deletions are marked like this. Additions are marked like this.
Line 22: Line 22:
=== 2018-11-05 ===
==== SRM (top priority) ====
 * Etc
  * --(Solder more cables.)--
  * --(Ultrasonically clean more cables.)--
  * --(Work out optimum LPCD output resistance; get one box modified.)--
  * Work out how to change LPCD watchdog threshold; get one box modified.
=== 2018-11-12 ===
==== SRM ====
Line 30: Line 25:
  * --(Lay out LBB damper ring pieces near tank.)--
  * Put magnets on LBB magnet ring.
  * Move KOACH filters
  * Put LBB damper rings in tank.
  * Crane LBB ring sandwich to top of tank.
Line 36: Line 28:
  * --(Run DC power and network to SRM_IP stepper driver.)--
  * --(Add all steppers and picos to driver list and MEDM screens.)--
  * --(Prepare SF magnet ring.)--
  * --(Install #353 poles)--
  * --(Move NB-03 jacks down; disassemble top of AF.)--
  * --(Crane PI into AF.)--
  * --(Install F0-SF rod (#331) and flying saucer.)--
  * --(Route SF/... cables up to underside of F0.)--
  * --(Install weaker CuBe spring.)--
  * --(Add SF trim mass to leave 1.2 kg margin.)--
  * --(Tweak BF trim mass to compensate for new cables.)--
  * --(Measure bounce frequencies.)--
Line 49: Line 29:
   ==== SR2 (low priority) ====
 * --(Unclamp LBB ring sandwich.)--
 * --(Set LBB receptacles to CAD positions.)--
 * --(Remove spacers; get LBB hanging.)--
 * Set up OL.

=== 2018-11-12 ===
==== SRM ====
 * Main sequence
Line 67: Line 37:
==== SR2 (low priority) ====
 * Set up OL pillar and shelf (with Akutsu-san).
 * Set up OL cabling.
 * Set up OL.
Line 84: Line 58:
 * Set up SR2 Guardian.

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



  • LBB
    • Crane LBB ring sandwich to top of tank.
    • Set tank jacks to nominal height.
  • Main sequence
    • Do vertical height budget.
    • Cable/test IP LVDTs.
    • Cable/test IP FRs.
    • Unlock IP and center roughly.
    • Calibrate IP LVDTs.
    • Check/adjust alignment of SS.
    • Add arc weights and geophones (or extra mass equivalent to geophones).
    • Cable/test geophones.
    • Improve centering/tuning of IP and SS alignment.

SR2 (low priority)

  • Set up OL pillar and shelf (with Akutsu-san).
  • Set up OL cabling.
  • Set up OL.

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)