McMaster accelerator facility

The McMaster model FN tandem accelerator is useful for producing particle beams for the single event upset test facility. Ions are produced by a universal negative ion source and accelerated by potential differences toward the van de Graaff accelerator. The particles will acquire an energy equal to the potential on the high voltage terminal, where the low- and high-energy acceleration tubes are connected by an electron stripper canal. Carbon stripper foils in the canal strip the ion beam of its negative charge, producing a positive beam of particles. A gas stripper is used for heavy ions. At the end of the high energy acceleration tube, an analyzing magnet deflects the ion beam for a final mass selection. The target facility is a scattering chamber which has many benefits for single event upset operation. New additions to the target facility include a Faraday cup at the zero degree scattering chamber entrance and a multi-device automated holder that allows simultaneous installation of two devices under test (DUT), along with a surface barrier detector coaxial with the DUT. Second and third barrier detectors can be added to allow direct measurements of energy and fluence while the DUT is under bombardment. An associated facility has two evaporators used for preparing targets.