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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]] |
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[[#RealBSHang|Preparation for Real BS Hang]] | [[../ToDoSR|SR To-Do Items]] |
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[[#SRPrepTasks|Preparation for SR Installation]] | [[#EveryWeek |Every Week]] [[#ComingWeeks |Coming Weeks]] <<Anchor(EveryWeek)>> |
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* Get stuff from [[../WishList]] | |
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== Coming Week (2017-06-19) == === Facilities === * Remove cling wrap from stuff. * Plug stuff back in (charging station, KOACH filters, OL etc). * Power up rack. |
<<Anchor(ComingWeeks)>> |
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=== Main Assembly === * Unlock BF keystone and try running BF fishing rod to fix sag problem. * Do up all EQ stops etc (except SF). * Remove geophones. * Crane suspension into tank. * Hook LBB Cu ring. * Hook LBB. * Crane vacuum tank lid+ring black on. * Remove vacuum tank lid (only). |
== 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)-- * 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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=== Electronics === * Calibrate PI vertical LVDT. * Set yoke on PI vertical LVDT (if necessary). * Calibrate PI horizontal LVDTs. * Remove port covers where feedthroughs will go, move feedthroughs from assembly frame and install on vacuum tank ring. * Reconnect in-air cables. === 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 filter build/test stand. * 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. |
* 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. | * Get clean bag laundered. * 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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* Get pico drive screens fixed (Miyo-kun) | |
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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. * Get another D-Sub breakout (Hirata). * Design final SF ballast masses (Fabian). * Finish/post assembly drawing for LBB and LBB damper ring (Hirata). * 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). |
VIS Type B BS Near Term To-Do List
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
- 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.