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[[#RealBSHang|Preparation for Real BS Hang]] |
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* Crane out SF. * Raise BF cap and retrieve lost hex cable clamp PEEK piece. * Crane in SF. * Install SF-BF rod with hex cable clamp. * Route cables via hex cable clamp up to below SF. * Adjust BF ballast mass for total weight and pitch/roll. * Look for missing screw from SF damper Cu segment in washed screws bag and reinstall. |
* --(Crane out SF.)-- * --(Raise BF cap and retrieve lost hex cable clamp PEEK piece.)-- * --(Crane in SF.)-- * --(Install SF-BF rod with hex cable clamp.)-- * --(Route cables via hex cable clamp up to below SF.)-- * --(Adjust BF ballast mass for total weight and pitch/roll.)-- * --(Look for missing screw from SF damper Cu segment in washed screws bag and reinstall.)-- * --(Adjust yoke on SF to put top of secondary at 6 mm above top of baseplate (or to give ≈0 counts at nominal height).)-- |
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* Cable and test SF fishing rod stepper. | * --(Cable and test SF fishing rod stepper.)-- |
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* Rearrange arc weights on PI to allow installation of magic wand. | * --(Rearrange arc weights on PI to allow installation of magic wand.)-- * Install magic wand on PI. |
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* Find Ni-plated rods for SF damper magnet ring and do fit check. * Find PI-SF rod with 8 mm heads and matching receptacles and do fit check. |
* --(Find Ni-plated rods for SF damper magnet ring and do fit check.)-- * --(Find PI-SF rod with 8 mm heads and matching receptacles and do fit check.)-- |
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* --(Recalibrate remachined LBB springs and choose best three.)-- == Dates == * Repaired LBB half ring is returned: 9/11 (Mon, lunchtime) * BUMAX countersunk screws for LBB Cu * SDC screws for LBB half rings: 9/15 (Fri) * LBB Cu segments: 9/19-20 |
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== Real BS Hang Tasks == | == Tasks Not To Forget == |
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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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* --(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). |
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
2017-09-04
Main Assembly Sequence
Crane out SF.
Raise BF cap and retrieve lost hex cable clamp PEEK piece.
Crane in SF.
Install SF-BF rod with hex cable clamp.
Route cables via hex cable clamp up to below SF.
Adjust BF ballast mass for total weight and pitch/roll.
Look for missing screw from SF damper Cu segment in washed screws bag and reinstall.
Adjust yoke on SF to put top of secondary at 6 mm above top of baseplate (or to give ≈0 counts at nominal height).
- Calibrate SF LVDT.
- Install SF main ballast mass.
Cable and test SF fishing rod stepper.
- Add SF cap.
- Lift and weigh SF/... section.
In parallel, time permitting
Rearrange arc weights on PI to allow installation of magic wand.
- Install magic wand on PI.
- Check that we still have all LBB parts (there was an issue with borrowed lock nuts).
- Rearrange magnets on SF damper magnet ring for full three Cu segments.
Find Ni-plated rods for SF damper magnet ring and do fit check.
Find PI-SF rod with 8 mm heads and matching receptacles and do fit check.
- Lay more new in-air cabling.
- Wipe LLB damper parts with ethanol.
- Get Cu O-rings for feedthroughs.
- Figure out how to tighten PI yaw return spring.
Recalibrate remachined LBB springs and choose best three.
Dates
- Repaired LBB half ring is returned: 9/11 (Mon, lunchtime)
- BUMAX countersunk screws for LBB Cu
- SDC screws for LBB half rings: 9/15 (Fri)
- LBB Cu segments: 9/19-20
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)
- Calibrate PI vertical LVDT.
- Set yoke on PI vertical LVDT (if necessary).
- Calibrate PI horizontal LVDTs.
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.
Create a proper DAC Monitor MEDM screen.
Improve ADC Monitor MEDM screen.