mechanical design, analysis and integration of pre-alignment systems for clic
DESCRIPTION
Mechanical design, analysis and integration of pre-alignment systems for CLIC. M.Anastasopoulos / BE-ABP-SU. Contents. I. Introduction II. Mechanical Design - Typical workflow III. Completed and running projects IV. Future tasks. I . Introduction. 200 m. CLIC Pre-alignment - PowerPoint PPT PresentationTRANSCRIPT
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Mechanical design, analysis and integration of pre-alignment systems
for CLICM.Anastasopoulos / BE-ABP-SU
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Contents
I. Introduction
II. Mechanical Design - Typical workflow
III. Completed and running projects
IV. Future tasks
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CLIC Pre-alignment
• Components should be pre-aligned within a few microns over 200m• Overlapping stretched wires will provide a stable and determined alignment reference• cWPS sensors will perform measurements with respect to these wires• Actuators will re-adjust the components to their theoretical positions
I. Introduction
200 m
The metrological reference network of overlapping wires
Challenges in the Test-Modulesfor the mechanical engineer
• Simultaneous existence of various systems: vacuum, RF, stabilization, pre-alignment• Limited space for installation• Access and maintenance issues• Proper collaboration between systems designed by different people
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Concept
3D design Fabrication
Installation
Previously used system that needs
to be modified
Integration
Re-design
II. Mechanical Design - Typical workflow
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III. Completed and running projects
Support extemities of WPS and HLS sensors for CLIC Test-Module
Simulation under working load for design optimization
3D design of proposed solution
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Design, analysis & integration of additional components
Basic supporting systemcWPS sensor with fixation
Servo Inclinometer with fixation
Stretching devices - weight endStretching devices - fixed end
Optical WPS with fixation
Deformation under working load (static)
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Fabrication drawings and installation plans
Supporting block installation plan
Top plate fabrication drawing
Complete system assembly plan
Stretching devices assembly plan
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Final solution for installation ofWPS sensors, inclinometers, wire stretching devices
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Support extremities integrated at Test-Module level
• Various modifications made to the initial design• Additional systems are foreseen to be installed in the future (HLS)
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Actual installation at 169/S-039
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Adaptation of Hydrostatic Leveling System (HLS) and water network for CLIC Test-Module
HLS schematic
• Used to determine height differences
• Based on communicating vessels principle
• Air linkage between the stations for achieving the same pressure
Typical HLS Pot and a previous installation
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Support assembly plan
HLS Pot assembly PS4 Valve
HLS Network installation plan
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Proposed solution for HLS Network at Test-Module 1-0-0-4
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HLS network integrated at Test-Module level
• Fabrication of real components is in progress
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Integration of NIKHEF RasChain system
• Alternative alignment solution
• Based on optical WPS sensors (laser)
• Needs thermal insulation
NIKHEF optical alignment system (current design under modifications)
Integration of current version of the system (Laser sensors & thermal insulation)
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Integration of an alignment system in a 5 DoF Mockup
A compact solution was adopted for sensor plates and stretching devices
• Will provide an evaluation platform for a 5 DoF system, based on cam movers
Actual installation at 927-TAP
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Metrological Reference Network (MRN) Interconnecting bench
200 m
Metrological Reference Network
Overlapping stretched wire Interconnecting metrological plate
• Limited space (~ 50 cm. width allowance inbetween the module’s girders)
• Access for sensors and stretching devices maintenance
• Minimum deformation of supporting plate
• Currently proposed solution / still under evaluation
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IV. Future tasks
CLIC Test Modules
Installation of HLS system in current setup
Follow-up of NIKHEF
installation
Modelling of cables and electronics
CLEX facilityAdaptation of
currently installed systems
Design for installation of new systems
MRN bench
Finalization of proposed
design
Simulations of mechanical behaviour
Various independent
designs
WPS fixation testbench
Mechanical solution for
sensors maintenance
Presentation of total alignment
strategy
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Thanks for your attention!