CERN Superconducting Cables Connection Cryostats (ColdBoxes)

Coordinating university: Uppsala University,


Project description
The High Luminosity Large Hadron Collider (HL-LHC) at CERN is an upgrade of the LHC to achieve instantaneous luminosities a factor of five larger than the LHC nominal value. More powerful superconducting magnets are needed and their powering relies on essential and critical connections between MgB2 cable and a high temperature superconductor current lead.

These connections need to be cooled by cryogens and must be able to carry an unprecedented current capacity of up to 100 kA each. The devices where these connections are made have to be cryogenic and high current compatible as well as compact.

Uppsala University:

  • R. Santiago Kern, Research Engineer, cryogenics and vacuum

  • Roger Ruber, Researcher, cryogenics and superconductivity

  • Tord Ekelöf, Professor, project leader


  • Vittorio Parma, Research Engineer, project engineer

Core deliverables

  • Design of the different components of the cryostats

  • Manufacturing

  • Assembly

  • Qualification testing

  • All documentation pertaining to the project, such as manufacturing drawings and test reports


Total budget
EUR 2 million

Industry involvement
RFR Solutions


Procurement codes
Electrical engineering and magnets

Electronics and radio frequency

Vacuum and low temperature