Multigigahertz beam current and position monitor for relativistic electron beams.

A self-integrating magnetic-loop device having a rise time of less than 175 ps has been developed to monitor the temporal behavior of the current and position associated with an electron beam. Beam current and centroid position are measured with a 2-GHz bandwidth by combining the output of these loops with two 0°/180° hybrids. The improved monitors are essentially free of self-resonances and spurious responses at bandwidths extended to 2 GHz. The probes are economical and easy to produce in volume for a wide range of applications. [ABSTRACT FROM AUTHOR]