Differences between revisions 104 and 150 (spanning 46 versions)
⇤ ← Revision 104 as of 2017-08-07 08:20:52 →
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← Revision 150 as of 2017-09-29 08:02:05 → ⇥
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= VIS Type B Near Term To-Do List = = VIS Type B BS Near Term To-Do List =
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[[../ToDoOld|Archived To-Do Items]] [[../ToDoOldBS|Archived BS To-Do Items]]

[[../ToDoSR|SR To-Do Items]]
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[[#RealBSHang|Preparation for Real BS Hang]]

[[#SRPrepTasks|Preparation for SR Installation]]
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== 2017-08-07 ==
=== Facilities ===
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=== Design/Documentation/Planning ===
 * LBB ballast mass.
  * Research real payload.
  * Do improved mass budget.
 * Update BS Install Procedure with screenshots from new on-assembly-frame 3D CAD.		 == 2017-09-25 ==
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=== Electronics ===
 * Route new (longer) TM OSEM cables.
 * Rip out old in-air cabling.
 * Lay new in-air cabling.
 * Reinstall LVDT chassis.		 === Main Assembly Sequence ===
 * --(Move in-air cabling and feedthroughs and reconnect in-vacuum cables (through Cu O-rings).)--
 * --(Fix #1 geophone adapter cable.)--
 * Fix broken pico adapter cable?
 * Debug all electronics, starting with IRM OSEMs. (half done)
 * --(Unlock IP; use jacks and FRs to center.)--
 * Check IP yaw.
 * Recheck centering of suspension in assembly frame.
 * Measure IP period; adjust ballast mass.
 * Calibrate IP LVDT sensing against IP LVDT actuation, IP FRs.
 * LBB stuff (see below).
 *
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=== Main Assembly ===
 * Weigh filter lifting rod plus whatever other items used by Hirata-san in BF load capacity measurement.
 * Finish adjusting in/out of TM OSEMs.
 * Hang RM.
 * Remove endplate of IM, check pico centering.
 * Weigh/trim IM/RM/TM
 * Remove LBB rings.
 * Send rings for recleaning.		 === LBB Sequence ===
 * --(Unclamp LBB ring sandwich; fully suspend Cu ring.)--
 * --(Unscrew LBB from tank brackets.)--
 * --(Hook LBB.)--
 * --(Remove TBD amount of spacers from between LBB and tank brackets.)--
 * --(Set LBB blade stops to nominal height.)--
 * --(Extend foot screws on LBB to just barely support LBB.)--
 * --(Adjust height of LBB magnet ring to set proper gap (4 mm??).)--
 * --(Retract LBB foot screws.)--
 * --(Add temporary ballast to LBB until LBB blades just barely sink below stops.)--
 * --(Check distance from LBB to main beam height (or other suitable reference); adjust by screwing receptacles.)--
 * --(Set foot screws to give ≈5 mm (or TBD) movement range of LBB below nominal.)--
 * --(Set stop on LBB blades to give ≈3 mm (or TBD, less than Cu-magnet gap) of LBB above nominal.)--
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=== Time permitting === === In parallel, time permitting ===
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== Real BS Hang Tasks == == Tasks Not To Forget ==
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 * Update BS Install Procedure with screenshots from new on-assembly-frame 3D CAD.
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 * Final ballast mass production for BF and SF (Hirata-san). (have quotes)
 * Design of receptacles for rods with 8 mm heads.
 * Possible rebuild of BF and/or SF
  * Set up build/test stand for filters.
  * Get filter test weights.
  * Find spare BF blade(s).
 * Reclean stuff:
  * PI (remove Kapton tape etc, etc).
  * LLB damper stuff, especially Cu segments.
 * Calibrate PI vertical LVDT.
 * Set yoke on PI vertical LVDT (if necessary).
 * Calibrate PI horizontal LVDTs.		  * Figure out how to make PI yaw adjustment reliable.
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 * Swap out temporary ballast mass in BF, SF.
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  * 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.
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 * Check inside SF for lost ruler.
 * Tighten PI yaw return spring.
 * Get Cu O-rings for feedthroughs.
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 * Calibrate all LVDTs (Enzo, Mark).
 * 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 6 mm above top of baseplate (or to give ≈0 counts at nominal height).		  * 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).
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 * Create a proper DAC Monitor MEDM screen.
 * Improve ADC Monitor MEDM screen.

<<Anchor(SRPrepTasks)>>

== SR Prep Tasks ==
=== Design/Purchasing ===
 * Do rough mass budget for SR2/SR3/SRM.
 * Design SR assembly frame.
 * Design final SF ballast masses (Fabian).

=== Electronics ===
 * Get cables/cards for SR3:
  * 5 DSub-37 cables (tent)
  * 5 DSub-15M to DSub-9M adapter cables (tent)
  * 3 DIO cards (tent)
  * 2 DSub-9 FF gender benders (for LVDTs)
  * extra ADC card(s)?
  * extra DAC card(s)?
  * BNC-LEMO adapter (for LVDTs)
  * etc

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

2017-09-25

Main Assembly Sequence

  • Move in-air cabling and feedthroughs and reconnect in-vacuum cables (through Cu O-rings).

  • Fix #1 geophone adapter cable.

  • Fix broken pico adapter cable?
  • Debug all electronics, starting with IRM OSEMs. (half done)

  • Unlock IP; use jacks and FRs to center.

  • Check IP yaw.
  • Recheck centering of suspension in assembly frame.
  • Measure IP period; adjust ballast mass.
  • Calibrate IP LVDT sensing against IP LVDT actuation, IP FRs.
  • LBB stuff (see below).

LBB Sequence

  • Unclamp LBB ring sandwich; fully suspend Cu ring.

  • Unscrew LBB from tank brackets.

  • Hook LBB.

  • Remove TBD amount of spacers from between LBB and tank brackets.

  • Set LBB blade stops to nominal height.

  • Extend foot screws on LBB to just barely support LBB.

  • Adjust height of LBB magnet ring to set proper gap (4 mm??).

  • Retract LBB foot screws.

  • Add temporary ballast to LBB until LBB blades just barely sink below stops.

  • Check distance from LBB to main beam height (or other suitable reference); adjust by screwing receptacles.

  • Set foot screws to give ≈5 mm (or TBD) movement range of LBB below nominal.

  • Set stop on LBB blades to give ≈3 mm (or TBD, less than Cu-magnet gap) of LBB above nominal.

In parallel, time permitting

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)
  • Figure out how to make PI yaw adjustment reliable.

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.

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