Novel high-intensity and gamma-rays sources using crystals

Recent advancements in gamma-ray light sources have catalyzed the exploration of novel methods alternative to the traditional Free-Electron Lasers (FELs) and Inverse Compton Scattering techniques. The TECHNO-CLS project, under the European Innovation Council’s PATHFINDER initiative, investigates the use of crystalline light sources (CLSs) employing linear, bent, and periodically bent crystals. By leveraging the intrinsic electrostatic fields within these crystals, akin to magnetic undulators, sub-millimeter oscillation periods are achieved, allowing GeV electron beams to generate high-intensity, monochromatic X- and gamma-rays up to tens ofMeV. We ouline the foundational techniques for creating crystalline undulators and the channeling phenomena in various crystal configurations, along with preliminary simulation results. These insights are crucial for the development of the next generation of gamma-ray sources.