Nano-modulated electron beams via electron diffraction and emittance exchange for coherent x-ray generation

Abstract

We present a new method for generation of relativistic electron beams with current modulation on the nanometer scale and below. The current modulation is produced by diffracting relativistic electrons in single crystal Si, accelerating the diffracted beam and imaging the crystal structure, then transferring the image into the temporal dimension via emittance exchange. The modulation period can be tuned by adjusting electron optics after diffraction. This tunable longitudinal modulation can have a period as short as a few angstroms, enabling production of coherent hard x-rays from a source based on inverse Compton scattering with total accelerator length of approximately ten meters. Electron beam simulations from cathode emission through diffraction, acceleration and image formation with variable magnification are presented along with estimates of the coherent x-ray output properties.

References in corpus (3)

• Compact x-ray source based on burst-mode inverse Compton scattering at 100 kHz
• Narrowband inverse Compton scattering x-ray sources at high laser intensities
• Aberration Corrected Emittance Exchange

Cited by in corpus (6)

• Control of quantum electrodynamical processes by shaping electron wavepackets
• Bunch Shaping in Electron Linear Accelerators
• Imaging nanoscale spatial modulation of a relativistic electron beam with a MeV ultrafast electron microscope
• Coherent Interactions of Free Electrons and Matter: Toward Tunable Compact X-ray Sources
• Emittance self-compensation in blow-out mode
• Transverse Confinement of Electron Beams in a 2D Optical Lattice for Compact Coherent X-Ray Sources