1718
Comment:
|
3240
|
Deletions are marked like this. | Additions are marked like this. |
Line 1: | Line 1: |
= VIS Type B Near Term To-Do List = | = VIS Type B BS Near Term To-Do List = |
Line 3: | Line 3: |
To-Do List 2017-03-13 | [[../ToDoOldBS|Archived BS To-Do Items]] |
Line 5: | Line 5: |
== Facilities == * Vacuum and roll floor (All) * Wipe ladders (All) * Tidy tools, parts (All) * Find missing light lent to Kokeyama-san (Mark) * Mark/photograph/count peeling patches on the floor. * Mark/photograph/count pillars with bare concrete bases. |
[[../ToDoSR|SR To-Do Items]] |
Line 13: | Line 7: |
== Electronics == | [[#EveryWeek |Every Week]] |
Line 15: | Line 9: |
* Wire up BF roll/pitch picos (Enzo) * Work with Miyo-kun to get pico drivers added to BS rack and screens (Enzo, Mark) * Grab remaining cables etc per E1605111 and update document (Enzo) * Update E1503600 with DIO card for HPCDs, etc, etc. (Enzo) * Decide final length for BS OSEM cables (Enzo, Mark, Fabian) * Send list of required in-vacuum cables to Takahashi-san (Enzo, Mark) * Debug 900 Hz noise on BF LVDT output (Enzo, Mark) * Debug excess noise on TM-H3 OSEM (Enzo, Mark) |
[[#ComingWeeks |Coming Weeks]] <<Anchor(EveryWeek)>> == Every Week == === Facilities === * Vacuum and roll floor. * Wipe ladders. * Tidy tools, parts. * Get stuff from [[../WishList]] <<Anchor(ComingWeeks)>> == 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. * 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 === <<Anchor(RealBSHang)>> == 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 [[https://dcc.ligo.org/LIGO-T1100378/public|LIGO-T1100378]]). |
Line 24: | Line 79: |
* Make spreadsheet on Google Docs or the like with in-vacuum cable inventory (Hirata) == PI Prep == * Inspect PI, compare to CAD and 2D drawings (Hirata, Mark) * Identify missing PI parts (Hirata, Mark) * Find and reattach repaired LVDT coil(s) (???) == Hanging BF/IRM/IM/RM/BS == * Correct orientation of SF cap (Mark, Fabian, Perry) * Correct orientation of SF (Mark, Fabian, Perry) * Find/attach cable clamps for SF (Fabian) == Real-time and SUMCON models == * Update SUMCON model of full BS (Perry?, Okitomi?, Mark?) * Do cut-down SUMCON model of just payload hanging from fixed BS (Perry?, Okitomi?, Mark?) * Compare measured TFs to cut-down model * Create a proper DAC Monitor MEDM screen * Improve ADC Monitor MEDM screen |
* 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. |
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
2017-09-25
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.
- 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.