Arc Welding

Reliable welding for extreme conditions

Bringing together a wide range of processes TIG, MIG/MAG, and Plasma

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Precision arc welding for reliable assemblies across CERN’s accelerators

At CERN, arc welding is used join materials from stainless steel and aluminium to copper and special alloys. In the main workshop, our qualified welders deliver reliable, high-quality assemblies across scales from small precision parts to metre-sized structures.

Welding Operations on Accelerator Magnets

Welding complex magnet assemblies, where limited accessibility and demanding requirements call for precision and expertise.

Glovebox welding for Superconducting Radio Frequency

Arc welding titanium components inside a glovebox to prevent oxidation and ensure ultra-clean, high-quality joints.

Automatic Welding of Large Pressure Equipment

Automatic welding of metre-scale components, ensuring precision and consistency for large accelerator structures

Precision Welding of Targets for High Energy Physics

TIG welding of cooling circuits and target components, built to withstand demanding beamline environments.

TIG Welding of Thin-Wall Aluminium for Demanding Vacuum Applications

Joining delicate aluminium chambers with flawless welds, meeting the extreme demands of UHV applications.

Welding Operations on Accelerator Magnets

Welding complex magnet assemblies, where limited accessibility and demanding requirements call for precision and expertise.

Glovebox welding for Superconducting Radio Frequency

Arc welding titanium components inside a glovebox to prevent oxidation and ensure ultra-clean, high-quality joints.

On site interventions

Beyond the workshop, interventions in experimental areas and tunnels call for the same level of skill under challenging conditions, where versatility, safety, and access are key. This combination of experience, innovation, and attention to demanding requirements such as ultra-high vacuum or cryogenics makes our on-site activities unique.

Precision Welding for Cryogenic Giants

The WA104 cryostat demanded over a kilometre of defect-free welds. Using both MIG and TIG techniques, CERN welders joined thick aluminium panels with millimetre-scale accuracy, ensuring leak-tightness and stability for liquid-argon operation.

Reliable Connections with Orbital Welding

Orbital TIG welding provides reproducible, high-quality joints for accelerator magnet interconnections, ensuring leak-tightness and mechanical integrity under cryogenic and ultra-high-vacuum conditions.

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