Performance of an RF Beam Monitor on the NBS-Los Alamos Racetrack Microtron

A prototype rf beam-position, current, and phase monitor has been used on the 100-keV injector beamline of the racetrack microtron (RTM) where performance was measured with the chopped and bunched beam. This monitor works with both a pulsed beam and a cw beam. The pulsed beam consists of beam pulses with a FWHM of 40 ns. The rf beam monitor was tested with beam currents from ~50 to 600 μA. The rf beam monitor will be described and its performance will be reported.