The AXSIS Project: Development of THz-Driven Accelerators for Compact Electron and X-Ray Sources

by Nicholas Matlis (Ultrafast Optics & X-rays Group, Center for Free Electron Laser Science, DESY)

Wednesday 8 Mar 2023, 14:00 → 15:00 Europe/Berlin

XHQ / E1.173 (EuXFEL / Schenefeld)

Despite the growing number of X-ray free-electron-laser light sources (XFELs) becoming operational around the globe, the accessibility to these unique and powerful scientific instruments is highly limited. The aim of the AXSIS project is to pioneer a novel electron-accelerator technology driven by terahertz-frequency electromagnetic radiation (THz) which is opening new possibilities for construction of low cost alternatives to XFELs with unique capabilities. Salient benefits of the THz technology are, first, intrinsic synchronization between the electrons, the driving fields and the pump-probe lasers, and second, accessibility to high field strengths and field gradients. High-field THz waves are anticipated to enable shorter acceleration distances and strong-field manipulations of the electron beams beneficial for reducing electron bunch durations compared to conventional accelerators, and have already been demonstrated for use in a suite of accelerator-related applications from accelerating to streaking and compressing to steering and focusing. To achieve the ambitious goals set forth in the AXSIS project to demonstrate and implement these cutting-edge, THz-powered electron and X-ray sources, however, requires development of multiple layers of technology from the ground up, including lasers, THz sources, accelerator modules and X-ray sources, each requiring orders of magnitude advances over the state of the art. This talk will review the status of the AXSIS project and give some perspective on potential applications of the unique THz sources and THz-driven accelerator modules.

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