Parametric X-ray radiation as a beam size monitor

We propose two new approaches, referred to as the local and remote methods, for measuring electron beam sizes using parametric X-ray radiation. Using the local method, we have carried out a proof-of-principle experiment, and good agreement was obtained with the results of a standard method using a fluorescent screen. For the remote method, we have proposed a scheme to measure beam sizes using a Fresnel zone plate as an X-ray lens. These methods may prove useful for measuring the sizes of electron beams with small emittances or short bunch lengths in recent advanced accelerators. -- Highlights: ► We propose new methods for measuring beam sizes using parametric X-ray radiation. ► Using the local method, we have carried out a proof-of-principle experiment. ► We have also proposed a scheme to measure beam profiles using a Fresnel zone plate. ► The proposed methods may be useful for beam monitors in recent advanced accelerators.