A Fast Cyclotron Beam Emittance Measuring Device

A fast emittance and beam profile measuring device for charged particle beams of energies up to about 30 MeV protons is described. It makes use of digitally driven compact beam deflection magnets which deliver sufficiently deflecting triangular wave fields up to frequencies of 1 kHz. Two-dimensional emittances or beam profiles can be produced with 16 frames per second on an oscilloscope. Alternatively, the data can be transferred to a PDP-11 computer with 0.3 frames per second.