Differences between revisions 73 and 147 (spanning 74 versions)
⇤ ← Revision 73 as of 2017-06-26 14:44:16 →
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Editor: MarkBarton
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← Revision 147 as of 2017-09-20 12:31:57 → ⇥
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Editor: EnzoTapia
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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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== Coming Weeks 2017-06-26 ==
=== Facilities ===
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=== Design/Documentation/Planning ===
  
 * Design final BF/SF ballast mass assuming BF can be made to work without rebuild (Fabian).
 * Finish assembly drawing for LBB and LBB damper ring and post on JGWDoc (Hirata-san).
 * Do version of 3D CAD with test-hang arrangement of suspension and LBB damper stuff (Hirata-san).
 * Do version of 3D CAD with final-hang arrangement of suspension and LBB damper stuff (Hirata-san).		 == 2017-09-19 ==
(No work Monday 9/18)
=== Main Assembly Sequence ===
 * --(Debug BF LVDT actuation)--.
 * --(Check F0 yoke height (top of coil former should be 37.5 mm above bottom of recess in top of baseplate))-- 36mm.
 * Test all PI items:
  * Yaw stepper (tested, not clearly working).
  * --(F0 LVDT sensing)--
  * --(F0 LVDT actuation)--
  * --(Calibrate F0 LVDT.)--
  * Horizontal LVDT sensing
  * Horizontal LVDT actuation
  * --(Geophones (issues with driver, cables, descramblers))--
 * --(Lock the F0 and SF keystones and measure the resonance frequency of the BF GAS)-- 2 Measurements: f1=0.443 Hz, f2=0.454 Hz.
 * --(Lock the SF and BF keystones and measure the resonance frequency of the F0 GAS)-- 2 Measurements: f1=0.208 Hz, f2=0.210 Hz.
 * --(Double check BS pitch with OL.)--
 * --(Adjust SF damper ring to correct gap.)--
 * --(Install lock nuts on F0 GAS FR at TBD positions.)--
 * Lock BF and F0 keystones (but ''not'' SF keystone).
 * Lock RM to BS and IRM to IM.
 * Lock RM, IRM and BF (but not SF) to security structure.
 * Lock IP.
 * --(Remove F0 keystone top plate (including yaw stepper) and immobilize SF/... in yaw.)--
 * --(Attach lifting fixture.)--
 * Remove BF- and SF-level crossbars.
 * --(Remove geophones for craning.)--
 * Disconnect in-vacuum cables from feedthrough and coil neatly for craning.
 * --(Attach lifting plates.)--
=== Tank Preparation Sequence ===
 * Attach Cu segments to LBB damper ring.
 * Pass halves of LBB magnet ring into tank, join, and make sandwich for craning.
 * --(Crane tank lid off.)--
 * Crane LBB damper rings to top of tank and suspend.
 * Crane suspension out of assembly frame.
 * Attach LBB upper rods to LBB blade tips and rotate suspension 45° clockwise.
 * Crane suspension into tank and connect upper rods to LBB Cu ring.
 * Unclamp LBB ring "sandwich" so LBB Cu ring is suspended on upper rods.
 * Install LBB lower rods and hook LBB.
 * Measure required ballast for LBB.
 * Unlock suspension and readjust.
 * Move in-air cabling and feedthroughs and reconnect in-vacuum cables (through Cu O-rings).
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== BS Prism/Flag gluing ==
 * Push Hirose-san to set exact date.
 * Organize transport company for Kashiwa->Kamioka
 * Organize NAOJ vehicle for Mitaka->Kashiwa
  * Akabou Yoshihara Delivery Service (赤帽よしはら運送) yoshihara@akabou.ne.jp (吉原様)
 * Collect all items required.
  * Mirror box.
  * Prisms.
  * Stub flags.
  * Magnets: SmCo, 2 mm diameter, 3 mm long
  * Prism jigs
  * Flag jigs
 * Glue magnets to flags, 2 N, 2 S.
 * Organize clean suits.
  * Make a list of people's sizes:
   * Mark: LL, 29 cm
   * Fabian: L, 26.5 or 27 cm
   * Hirata: M, 25.5 cm
   * Enzo: ??
  * Get ones at Mitaka laundered?
  * Get Mark/Enzo to bring from Kamioka?

=== Main Assembly ===
 * Adjust pitch/yaw/vertical of dummy optic.
 * Crane tank lid on.
 * Start TFs.

=== Electronics ===
 * --(Wash extra F-F gender benders.)--
 * --(Fix broken picomotor cable.)--
 * Install new LVDT driver and set gains.
 * Document LVDT driver rebuild and other changes.
 * Debug all cabling!
 * Get pico drive screens fixed (Miyo-kun)
 * Sort out naming convention for PI LVDTs, geophones and horizontal steppers.

=== LSOL ===
 * Assist Simon with hardware installation of LSOL.
 * Assist Simon with modifications to realtime model for LSOL.

=== Real-time and SUMCON models ===
 * Derive and install PI LVDT matrices.
 * Check LSOL section of k1visbs model.		 === In parallel, time permitting ===
 * --(Fix issue with geophone distributor.)--
 * Fix #1 geophone adapter cable (and replace borrowed one).
 * Fix broken pico adapter cable.
 * Figure out how to tighten PI yaw return spring or otherwise make yaw adjustment reliable.
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== Real BS Hang Tasks == == Tasks Not To Forget ==
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 * Final ballast mass design/production for BF and SF (Fabian, Hirata-san).
 * Get final OSEM cables (six of 1.7 m, two of 2.2 m, two of 2.4 m; Sato-san).
 * Possible rebuild of BF and/or SF
  * Set up build/test stand for filters.
  * Get filter test weights.
  * Find spare BF blade(s).
 * Prepare real BS:
  * Coordinate with Hirose-san.
  * Book transport of mirror (Kashiwa to KAGRA)
  * Gather mirror box, gluing supplies, prisms, magnets, new flags, new flag jigs.
  * Solve problem of lack of scribe line on one side of BS (Mark, Hirata-san).
  * Organize cleanroom gear for Kashiwa trip(s).
  * Put magnets in flags.
  * Glue flags/prisms at Kashiwa.
 * Reclean stuff:
  * PI (remove Kapton tape etc, etc).
  * LLB damper stuff, especially Cu segments.
 * Try rearranging arc weights to make room for magic wand (3D CAD or actual weights; Fabian or Hirata).
 * If needed based on previous, order longer threaded rods for arc weights on PI (Hirata).
 * Calibrate PI vertical LVDT.
 * Set yoke on PI vertical LVDT (if necessary).
 * Calibrate PI horizontal LVDTs.
 * Unlock BF keystone and try running BF fishing rod to fix sag problem.		  * 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)
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 * Swap out temporary ballast mass in BF, SF.  * Put pointy-tipped screw in RM trolley for BS
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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).

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

2017-09-19

(No work Monday 9/18)

Main Assembly Sequence

  • Debug BF LVDT actuation.

  • Check F0 yoke height (top of coil former should be 37.5 mm above bottom of recess in top of baseplate) 36mm.

  • Test all PI items:
    • Yaw stepper (tested, not clearly working).

    • F0 LVDT sensing

    • F0 LVDT actuation

    • Calibrate F0 LVDT.

    • Horizontal LVDT sensing
    • Horizontal LVDT actuation

    • Geophones (issues with driver, cables, descramblers)

  • Lock the F0 and SF keystones and measure the resonance frequency of the BF GAS 2 Measurements: f1=0.443 Hz, f2=0.454 Hz.

  • Lock the SF and BF keystones and measure the resonance frequency of the F0 GAS 2 Measurements: f1=0.208 Hz, f2=0.210 Hz.

  • Double check BS pitch with OL.

  • Adjust SF damper ring to correct gap.

  • Install lock nuts on F0 GAS FR at TBD positions.

  • Lock BF and F0 keystones (but not SF keystone).

  • Lock RM to BS and IRM to IM.
  • Lock RM, IRM and BF (but not SF) to security structure.
  • Lock IP.

  • Remove F0 keystone top plate (including yaw stepper) and immobilize SF/... in yaw.

  • Attach lifting fixture.

  • Remove BF- and SF-level crossbars.

  • Remove geophones for craning.

  • Disconnect in-vacuum cables from feedthrough and coil neatly for craning.

  • Attach lifting plates.

Tank Preparation Sequence

  • Attach Cu segments to LBB damper ring.
  • Pass halves of LBB magnet ring into tank, join, and make sandwich for craning.

  • Crane tank lid off.

  • Crane LBB damper rings to top of tank and suspend.
  • Crane suspension out of assembly frame.
  • Attach LBB upper rods to LBB blade tips and rotate suspension 45° clockwise.
  • Crane suspension into tank and connect upper rods to LBB Cu ring.
  • Unclamp LBB ring "sandwich" so LBB Cu ring is suspended on upper rods.
  • Install LBB lower rods and hook LBB.
  • Measure required ballast for LBB.
  • Unlock suspension and readjust.
  • Move in-air cabling and feedthroughs and reconnect in-vacuum cables (through Cu O-rings).

In parallel, time permitting

  • Fix issue with geophone distributor.

  • Fix #1 geophone adapter cable (and replace borrowed one).
  • Fix broken pico adapter cable.
  • Figure out how to tighten PI yaw return spring or otherwise make yaw adjustment reliable.

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)

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)