The European Spallation Source

The European Spallation Source (ESS) requires 5 MW of proton beam power which is a factor of five larger in power compared to existing spallation facilities. To accommodate the high power, the ESS facility will pioneer the long pulse concept. The proton linac sourcing the neutron spallation target will be a 2 GeV superconducting linac that requires 125 MW of peak RF power at 704 MHz.