Summary
This paper describes systematic geometrical measurement methodology and results from production of superconducting model magnets for particle accelerator applications. The authors present data acquisition and analysis procedures developed to maintain strict control and traceability of high-precision assemblies, identify sources of dimensional deviation, and quantify how assembly, thermal cycling, and operational powering affect final magnet geometry. The work provides practical experience from an ongoing large-scale manufacturing programme, with implications for quality assurance in superconducting magnet production.
UK applicability
The paper reports on production processes at CERN and associated international laboratories rather than UK-specific conditions. Its methodological contributions for precision metrology and quality control in superconducting magnet manufacturing may be relevant to UK-based precision engineering and scientific instrument manufacturers, though direct applicability is limited to specialist contexts.
Key measures
Coil geometry; dimensional deviations in component assemblies; magnet behaviour before and after cold tests (assembly, cool-down, powering effects)
Outcomes reported
The study documented systematic geometrical measurements during production of model magnets for the High Luminosity Large Hadron Collider upgrade, identifying principal factors causing dimensional deviations. Measurements were performed before and after cold tests to investigate the integrated effects of assembly, cool-down, and powering operations on magnet geometry.
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