LHC BWS Electro-Mechanical Consolidation - Project Meeting February 4th 2020 - CERN Indico
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LHC BWS Electro-Mechanical
Consolidation
Project Meeting
February 4th 2020
Dmitry Gudkov, BE-BI-ML 1
Content
• Status of Prototypes
• Project Schedule
• Spares
• Future Work
• Discussion
Dmitry Gudkov, BE-BI-ML 2
Status of Prototypes
• Prototype #1
• Assembly done in December 2019
• Electromechanical tests done in December 2019 – January 2020 (see Jonathan’s presentation)
• Vacuum acceptance test has been agreed with TE-VSC, planned for February 2020
• Prototype #2
• Components have been ordered for Prototype #1 and #2
• Assembly is under way (readiness 95%) – Morad, Jean
• Vacuum acceptance tests will be done after Prototype #1 (if necessary)
• Cabling to be done
Do we install one or two beam wire scanners in the LHC in 2020?
Dmitry Gudkov, BE-BI-ML 3
Status of Prototypes: now in the BI Assembly Hall
Thanks to Morad, Jonathan, Guillaume, Jean!
Guides Bellows
Front Plate Back Plate
ConFlat Flange
Wire
Motor
Hub
Ball Screw
Position
measurement
device
Dmitry Gudkov, BE-BI-ML 4
Project Schedule
• No changes since last meeting
• On schedule
• Next steps are
• Finalize second prototype
• Adjust fork position to avoid clash with vacuum chamber
• Perform vacuum acceptance test (1 or 2 instruments)
• Install the instrument(s) in the LHC
Dmitry Gudkov, BE-BI-ML 5
Spares
• We have 5 vacuum chambers, ready for installation
• + One complete spare (old design) in 867
• Bellows state is unknown
• Vacuum chamber can be replaced
• This one can be prepared for installation
• + Two complete sets of parts for 2 more spares (old design)
• some commercial components need to be ordered (bearings, guides)
• 2 more spares can be prepared for installation
• + One or Two BWS currently installed (to be removed from the LHC)
• Bellows state is known
• To be seen whether they need replacement
• 1 or 2 more spares can be prepared
• Total: 4 or 5 spares (old design) can be prepared
• In case we need one more prototype (new design), a new set of parts should be ordered
• ~ 5000 CHF
Dmitry Gudkov, BE-BI-ML 6
Future Work
• We have all-metal bellows-less prototype for fast linear scanners from UHVD
• Test results (identical system in UHVD):
• Total N of cycles: 350,000
• Shaft speed (rev/sec): 50 (corresponding to 1000 mm/sec with 20 mm ballscrew lead)
• End position repeatability within 0.03 mm
• Good support for the next BWS Upgrade:
Front Plate Magnetically-coupled
Back Plate
actuator
ConFlat Flange
Wire
Motor
Hub
Position
measurement Ball Screw
device
Dmitry Gudkov, BE-BI-ML 7
Thank you!
…discussion…
Dmitry Gudkov, BE-BI-ML 8
Extra slides
Backup material
Dmitry Gudkov, BE-BI-ML 9
1
Detailed Electromechanical Design 8
1. Electric Motor Kollmorgen AKM23F-ACC2R-00 – ordered, arrival in July 12
2. Ballscrew Bosch Rexroth D16x16 T5 C3 (Preloaded) - received
3. Vacuum chamber with bellows – will be reused
4. Linear Guides – will be reused
3
5. Supports – will be reused 10
6. Power Connector HARTING : 09 62 816 0301
5 4 2
7. Connector BURNDY : UTO0-16-19S-21T (x2)
8. Potentiometer for linear position measurements – will be reused
9. Linear Bushing Bosch Rexroth : R1083 612 20 (x2) - received 11
9
10. Supporting plates – to be produced
11. Hub – to be produced 10
12. Installation guides – will be reused
6
Dmitry Gudkov, BE-BI-ML 10Project Status
• Without supporting frame modification only the replacement of horizontally installed BWS is possible
• It was decided not to modify the supporting frame (Meeting 28.05.2019)
LHC-RA43 / C05L4 LHC-RA46 / C05R4
Dmitry Gudkov, BE-BI-ML 11Change Proposal – Interferometry Positioning
Sensor
Sensors’ supplier – Attocube (DE)
M12/C7.6
Necessary mechanical changes:
1. Design and manufacturing of sensor
head interface plate
2. Design and manufacturing of mirror
1 2 interface part
3. Modification of the hub (2 tapped
holes)
Questions:
1. Sensor head
1. Are we interested in integrating this
2. Mirror (5 mm/9 mm)
sensor with prototypes?
2. Interfaces with control electronics?
Other electronics, cables, optical
fibers in the tunnel?
3. Budget
Dmitry Gudkov, BE-BI-ML 12Dmitry Gudkov, BE-BI-ML 13
Future Linear BWS Alternatives and Study
Bellows/Ballscrew/Rot. motor Magnetically-coupled/Ballscrew/Rot. motor Magnetically-coupled/Lin. motor
Guides Bellows Front Plate Magnetically-coupled
Back Plate
actuator
Front Plate Back Plate
ConFlat Flange ConFlat Flange
Wire Wire
Motor Motor
Hub
Hub
Ball Screw
Position Bellows/Lin. motor
Position measurement Ball Screw
measurement device
device
Direct Drive/Lin. Motor/thin wall vac. chamber
Dmitry Gudkov, BE-BI-ML 14home.cern
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