Swiss researchers from 12 institutes representing all universities are active in CERN experiments, primarily in the fields of particle physics (neutrinos, LHC, matter/antimatter), medicine and technological research (electronics, materials). Great importance is also attached to technology transfers to Swiss industry. Swiss universities are heavily involved in the development and expansion of the CERN infrastructure, including the construction of the large detectors ATLAS, CMS and LHCb for the LHC. This has called for an important financial and scientific commitment, particularly from the universities of Basel, Bern, Geneva, Lausanne and Zurich as well as the Federal Institutes of Technology (ETH) in Zurich and Lausanne.
CERN employs around 200 Swiss researchers, engineers, technicians and business people, trainees and students at its facilities. CERN is also an attractive economic partner for Switzerland: until three times the amount of Switzerland's annual contribution to CERN is recouped in the form of contracts for the Swiss industrial and services sectors.
Switzerland generally finances just over 4% of CERN’s annual overall budget of over CHF 1 billion. Responsibility for Switzerland’s contribution to CERN rests with SERI.