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| Deletions are marked like this. | Additions are marked like this. |
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| == 2017-09-25 == | == ASAP == * Get picomotor drivers back on line. * Debug BS BIO connections, especially PI IP. |
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| * --(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). * |
* Necessary for phase-I★★★ * --(Modify IP LVDT damping filters to include set point.)-- * --(TFs.)-- * '''''EXCHANGE YAW/VERT FRs at F0''''' |
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| === 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.)-- |
* 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. * Re-calibrate F0 GAS LVDT * Tune the LVDT sensitivity * Measure IP period; adjust ballast mass. |
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| === In parallel, time permitting === | * 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. |
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| * Move safety bars from BS AF area to SR2 area. * Update circuit diagram. * (Time permitting) Try adding mass to IP. |
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| * Get pico drive screens fixed (Miyo-kun) | |
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| * Get clean bag laundered. | |
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| * Lock washers for LBB dampers | |
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| * Swap in new F0-SF maraging rod (with 8-mm heads) and new receptacles to match. | |
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| <<Anchor(elec)>> | |
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| * 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). |
* Update BS Circuit diagram, D1503600 * --(Note removal of LED/PD on TM OSEMs.)-- * 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.)-- |
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| * 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
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.
- Re-calibrate F0 GAS LVDT
- 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 borrowed parts:
- Temporary ballast mass (dog clamps) in BF.
Electrical
- Update BS Circuit diagram, D1503600
Note removal of LED/PD on TM OSEMs.
- 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.