THz STREAK CAMERA FOR FEL TEMPORAL DIAGNOSTICS: CONCEPTS AND CONSIDERATIONS

The accurate measurement of the arrival time of a hard x-ray free electron laser (FEL) pulse with respect to a laser is of utmost importance for pump-probe experiments proposed or carried out at FEL facilities around the world. This paper presents the latest device to meet this challenge, a THz streak camera, and discusses the challenges in its design, use, and analysis of results.