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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 | [[../ToDoOldBS|Archived BS To-Do Items]] [[../ToDoSR|SR To-Do Items]] [[#EveryWeek |Every Week]] [[#ComingWeeks |Coming Weeks]] <<Anchor(EveryWeek)>> |
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* Get stuff from [[../WishList]] | |
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== 2017-05-15 == | == December 2018 vent == * Install new yaw pico mechanism (if available). * Add more mass to IP to get a lower frequency. * Tune LBB (adjust table height, damper height). * Service geophones (one has high noise, one has DC offset). * Re-calibrate F0 GAS LVDT. |
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== Facilities == * --(Clear spaces for PR2 bellows work and SR2 ladder installation on 5/15.)-- * --(Fix safety bar on -X side of assembly frame (move to other side of pillars and attach more securely).)-- |
<<Anchor(ComingWeeks)>> |
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== Design/Purchasing == * Order longer threaded rods for arc weights on PI. * Design, order modifications to LBB blade springs. * --(Get more UHV foil.)-- * Get more cable ties. * Get more duckboards. |
== ASAP == * --(Get picomotor drivers back on line.)-- * --(Debug BS BIO connections, especially PI IP.)-- |
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=== Main Assembly === * --(Secure arc weights with M8 nuts.)-- * --(Remove PI.)-- * --(Unjam PI-SF rod.)-- * --(Remove SF cap.)-- * --(Remove blades from LBB blade units and send off for rework.)-- * --(Install remaining cable clamps on PI.)-- * --(Remove one Cu damper segment from SF cap and reconfigure remaining two to be symmetrical.)-- * --(Decide pattern of SF damper ring magnets (72 pieces in 2/3 of the original ring).)-- * --(Install magnets on SF damper ring.)-- * Lift PI and hang LBB damper ring. * Crane PI back in. * Install rod, this time with hex cable clamp. * Re-hook SF/... section. * Install geophones. |
=== Main Assembly Sequence === * Necessary for phase-I★★★ * --(Modify IP LVDT damping filters to include set point.)-- * --(TFs.)-- * '''''EXCHANGE YAW/VERT FRs at F0''''' |
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=== Electronics === * Debug and calibrate SF LVDT. * Debug stepper motors. * Put connector on PI vertical LVDT wires per E1503600-v13 Sheet 5. * --(Make PI vertical/yaw stepper in-air adapter cable per E1503600-v13 Sheet 7.)-- * Make (in-air) geophone unscrambler cables per E1503600-v13 Sheet 8. * Complete cabling of PI stuff (steppers, LVDTs, geophones) through to rack and test. * Review cable spreadsheet; send to Sato-san. |
* Necessary for phase-II★★ * Debug BS geophones. * Flip circuit boards in BS geophones to make them the same as SRx. * Calibrate IP LVDT actuation against IP LVDT sensing. (Klog 3553? http://klog.icrr.u-tokyo.ac.jp/osl/?r=3553) * Design PI Sensor blending filter. * Tune the LVDT sensitivity * Measure IP period; adjust ballast mass. * At some point (remotely)★ * Improve OL offloading. * Improve GAS offloading. * Spectral analysis of Oplev. * Design, install angular lock servo using OL. (Almost done for phase-I) * Adjust gains and debug damping for IM OSEMs and GAS LVDTs. (Almost done for phase-I) * Subtract DC level of Geophones. * Spectra analysis of PI sensors (PI LVDTs and Geophones). * Calibrate IP LVDT sensing against IP LVDT actuation, IP FRs. * Set all EQ stops to TBD clearance. * Modify the model for IP coil driver control === Documentation and Operation Manual === * Add useful info from Enzo's notebook to BSData. <<Anchor(RealBSHang)>> == Tasks Not To Forget == === Major Tasks === * --(Move safety bars from BS AF area to SR2 area.)-- * Update circuit diagram. * (Time permitting) Try adding mass to IP. * 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). * Figure out how to make PI yaw adjustment reliable. === Minor Tasks === ==== Mechanical ==== * Put pointy-tipped screw in RM trolley for BS * --(Return/replace temporary ballast mass (dog clamps).)-- * Characterize replacement F0. * --(Wipe/clean arc weights that were rained on.)-- <<Anchor(elec)>> ==== Electrical ==== * Update BS Circuit diagram, D1503600 * --(Note removal of LED/PD on TM OSEMs.)-- * Organize stepper reset system and watchdog BIO. * Include information on assignment of channels to feedthrough positions. * Reflect gender-changers and non-flipping feedthrough adapters. * Reflect actual cable lengths. * Include LVDT pin size (1 mm). * Include Stepper pin size (1.6 mm). * --(Undo renumbering of IP items.)-- * --(Page 10: "DIO Card # 0" should be "DIO Card # 1")-- * --(Include OutConfigBoards on OL page (Sheet 18).)-- * --(Update HPCD section to reflect:)-- * --(All three GAS channels are on HPCD #1 and DIO Card #2, CNB cables, Sheet 13.)-- * --(Three IP channels are on HPCD #0 and DIO Card #2, CNA cables, Sheet 15.)-- ==== 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]]). |
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== Real-time and SUMCON models == |
|
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* Design and install GAS drift compensation filters. * Create a proper DAC Monitor MEDM screen. * Improve ADC Monitor MEDM screen. |
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
December 2018 vent
- Install new yaw pico mechanism (if available).
- Add more mass to IP to get a lower frequency.
- Tune LBB (adjust table height, damper height).
- Service geophones (one has high noise, one has DC offset).
- Re-calibrate F0 GAS LVDT.
ASAP
Get picomotor drivers back on line.
Debug BS BIO connections, especially PI IP.
Main Assembly Sequence
- Necessary for phase-I★★★
Modify IP LVDT damping filters to include set point.
TFs.
EXCHANGE YAW/VERT FRs at F0
- Necessary for phase-II★★
- Debug BS geophones.
- Flip circuit boards in BS geophones to make them the same as SRx.
Calibrate IP LVDT actuation against IP LVDT sensing. (Klog 3553? http://klog.icrr.u-tokyo.ac.jp/osl/?r=3553)
- Design PI Sensor blending filter.
- Tune the LVDT sensitivity
- Measure IP period; adjust ballast mass.
- At some point (remotely)★
- Improve OL offloading.
- Improve GAS offloading.
- Spectral analysis of Oplev.
- Design, install angular lock servo using OL. (Almost done for phase-I)
- Adjust gains and debug damping for IM OSEMs and GAS LVDTs. (Almost done for phase-I)
- Subtract DC level of Geophones.
- Spectra analysis of PI sensors (PI LVDTs and Geophones).
- Calibrate IP LVDT sensing against IP LVDT actuation, IP FRs.
- Set all EQ stops to TBD clearance.
- Modify the model for IP coil driver control
Documentation and Operation Manual
- Add useful info from Enzo's notebook to BSData.
Tasks Not To Forget
Major Tasks
Move safety bars from BS AF area to SR2 area.
- Update circuit diagram.
- (Time permitting) Try adding mass to IP.
- 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).
- Figure out how to make PI yaw adjustment reliable.
Minor Tasks
Mechanical
- Put pointy-tipped screw in RM trolley for BS
Return/replace temporary ballast mass (dog clamps).
- Characterize replacement F0.
Wipe/clean arc weights that were rained on.
Electrical
- Update BS Circuit diagram, D1503600
Note removal of LED/PD on TM OSEMs.
- Organize stepper reset system and watchdog BIO.
- Include information on assignment of channels to feedthrough positions.
- Reflect gender-changers and non-flipping feedthrough adapters.
- Reflect actual cable lengths.
- Include LVDT pin size (1 mm).
- Include Stepper pin size (1.6 mm).
Undo renumbering of IP items.
Page 10: "DIO Card # 0" should be "DIO Card # 1"
Include OutConfigBoards on OL page (Sheet 18).
Update HPCD section to reflect:
All three GAS channels are on HPCD #1 and DIO Card #2, CNB cables, Sheet 13.
Three IP channels are on HPCD #0 and DIO Card #2, CNA cables, Sheet 15.
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.