Generation of intense, fully coherent radiation with wide spectral coverage has been a long-
standing challenge for laser technologies. Several techniques have been developed in …

Modern electron linear accelerators are often designed to produce smooth bunch
distributions characterized by their macroscopic ensemble-average moments. However, an …

X-ray free-electron lasers (XFELs) provide femtosecond X-ray pulses with a narrow energy
bandwidth and unprecedented brightness. Ultrafast physical and chemical dynamics …

In the field of beam physics, two frontier topics have taken center stage due to their potential
to enable new approaches to discovery in a wide swath of science. These areas are …

We demonstrate a novel multistage amplification scheme for self-amplified spontaneous-
emission free electron lasers for the production of few femtosecond pulses with very high …

Electron beam energy chirp is an important parameter that affects the bandwidth and
performance of a linac-based, free-electron laser. In this paper we study the wakefields …

High quality electron beams with flat distributions in both energy and current are critical for
many accelerator-based scientific facilities such as free-electron lasers and MeV ultrafast …

Significant progress has been made at Argonne National Laboratory in the development of a
compact wakefield accelerator based on a cylindrical corrugated waveguide with a 2-mm ID …

Microwave pulse compressors based on a single resonant cavity operating at polarized
modes can be super compact, and corrugated structures can transmit high-power, high …

The parallel operation of multiple undulator lines with a wide spectral range is an important
way to increase the usability of x-ray free electron laser (XFEL) facilities, especially for …