Magnetic Characterization and Design of an Undulator-Based Electron Beam Diagnostic

The LOASIS Laser Wakefield Accelerator (LWFA) has achieved quasi-mono-energetic electron beams with energies up to 1 GeV [1]. These beams offer the potential for use with insertion devices such as wigglers and undulators to create tabletop XUV and x-ray free-electron laser (FEL) sources. To achieve a high quality light source producing high brightness radiation requires an electron beam with low energy spread and low emittance. Here we discuss the use of an undulator to generate XUV radiation to characterize in a single shot the electron beam energy spread and emittance with high precision.