Development of a machine protection system for the Superconducting Beam\n Test Facility at Fermilab

Fermilab's Superconducting RF Beam Test Facility currently under construction\nwill produce electron beams capable of damaging the acceleration structures and\nthe beam line vacuum chambers in the event of an aberrant accelerator pulse.\nThe accelerator is being designed with the capability to operate with up to\n3000 bunches per macro-pulse, 5Hz repetition rate and 1.5 GeV beam energy. It\nwill be able to sustain an average beam power of 72 KW at the bunch charge of\n3.2 nC. Operation at full intensity will deposit enough energy in niobium\nmaterial to approach the melting point of 2500 {\\deg}C. In the early phase with\nonly 3 cryomodules installed the facility will be capable of generating\nelectron beam energies of 810 MeV and an average beam power that approaches 40\nKW. In either case a robust Machine Protection System (MPS) is required to\nmitigate effects due to such large damage potentials. This paper will describe\nthe MPS system being developed, the system requirements and the controls issues\nunder consideration.\n