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[[#RealBSHang|Preparation for Real BS Hang]] |
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== 2017-08-21 == === Design/Documentation/Planning === * Update BS Install Procedure with screenshots from new on-assembly-frame 3D CAD. |
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=== Main Assembly === * --(Wrap new IM bottom ballast masses (Mozumi).)-- * --(Install new IM masses.)-- * --(Set up optical level.)-- * --(Adjust IM ballast mass to give desired roll/pitch/vertical.)-- * --(Level BF.)-- * --(Cable BF LVDT, test and calibrate.)-- * --(Adjust top of IRM to level.)-- * --(Install IRM side panels.)-- * --(Install IRM OSEMs.)-- * --(Cable IRM OSEMs)-- and test. * --(Adjust IRM and IRM OSEMs to get good alignment of IRM OSEMs and IM-IRM stops.)-- * Add extra ballast mass to BF. * Add BF cap but don't anchor cables. * Cable and test BF cap picos. * Lift BF/IRM/IM/RM/BS and weigh. * Adjust BF ballast if necessary. * Crane in SF. * Hook up BF/IRM/IM/RM/BS. * Route cables up to SF. * Adjust BF ballast if necessary. |
== 2017-10-30 == |
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=== Time permitting === * Lay more new in-air cabling. |
=== Main Assembly Sequence === * Realign OL. * Design, install angular lock servo using OL. * Calibrate IP LVDT actuation against IP LVDT sensing. * Adjust gains and debug damping for IM OSEMs and GAS LVDTs. * Modify IP LVDT damping filters to include set point. * Set all EQ stops to TBD clearance. * Measure IP period; adjust ballast mass. * Calibrate IP LVDT sensing against IP LVDT actuation, IP FRs. * TFs. === Etc === * Move stuff out of PR2 area. * Tidy/label parts. * Move safety bars from BS AF area to SR2 area. * Put up safety bars in SR3 area. * Close hole in floor above BS AF area. === Software === * Update real-time model to number channels from #0. * Remove old OL stuff; add link to new OL stuff. * Remove unused screens. * Sort out SVN. * Add support for comments to SUMCON. * Create SUMCON model with values commented. * Publish matrices for IP FRs. === Design === * Finalize redesign of IP yaw adjuster. * Design better F0 FR adjuster. |
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== Real BS Hang Tasks == | == Tasks Not To Forget == |
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* Wipe any rust from around IP LVDTs. * Update circuit diagram. * (Time permitting) Try adding mass to IP. * Update BS Install Procedure with screenshots from new on-assembly-frame 3D CAD. |
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* Get pico drive screens fixed (Miyo-kun) * --(Final ballast mass production for BF and SF (Hirata-san). )-- * --(Design of receptacles for rods with 8 mm heads.)-- * --(Possible rebuild of BF)-- * --(Set up build/test stand for filters.)-- * --(Get filter test weights.)-- * --(Find spare BF blade(s).)-- * Reclean stuff: * PI (remove Kapton tape etc, etc). * LLB damper stuff, especially Cu segments. * Calibrate SF LVDT. * Calibrate PI vertical LVDT. * Set yoke on PI vertical LVDT (if necessary). * Calibrate PI horizontal LVDTs. |
* Figure out how to make PI yaw adjustment reliable. |
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* Get clean bag laundered. | |
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* --(Swap out temporary ballast mass in BF)--, SF. | |
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* Lock washers for LBB dampers | |
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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.)-- * Swap in new F0-SF maraging rod (with 8-mm heads) and new receptacles to match. * --(Check inside SF for lost ruler.)-- * Tighten PI yaw return spring. * Get Cu O-rings for feedthroughs. |
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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 * --(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 3.5 mm above top of baseplate (or to give ≈0 counts at nominal height). * Adjust yoke on SF to put top of secondary at 6 mm above top of baseplate (or to give ≈0 counts at nominal height). * 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. |
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
2017-10-30
Main Assembly Sequence
- Realign OL.
- Design, install angular lock servo using OL.
- Calibrate IP LVDT actuation against IP LVDT sensing.
- Adjust gains and debug damping for IM OSEMs and GAS LVDTs.
- Modify IP LVDT damping filters to include set point.
- Set all EQ stops to TBD clearance.
- Measure IP period; adjust ballast mass.
- Calibrate IP LVDT sensing against IP LVDT actuation, IP FRs.
- TFs.
Etc
- Move stuff out of PR2 area.
- Tidy/label parts.
- Move safety bars from BS AF area to SR2 area.
- Put up safety bars in SR3 area.
- Close hole in floor above BS AF area.
Software
- Update real-time model to number channels from #0.
- Remove old OL stuff; add link to new OL stuff.
- Remove unused screens.
- Sort out SVN.
- Add support for comments to SUMCON.
- Create SUMCON model with values commented.
- Publish matrices for IP FRs.
Design
- Finalize redesign of IP yaw adjuster.
- Design better F0 FR adjuster.
Tasks Not To Forget
Major Tasks
- Wipe any rust from around IP LVDTs.
- 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
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.