PSI

PSI (the Paul Scherrer Institut), in Villigen, Switzerland, boasts an unparalleled assemblage of scientific instruments for the study of matter, including an isochronous cyclotron with the world's highest intensity 500 MeV proton beam, which produces the world's highest flux CW muon beams, a reactor, a spallation neutron source, a synchrotron light source and a free electron X-ray laser (SwissFEL).