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

E. A. Nanni, William Graves, D. E. Moncton

Research output: Contribution to journalArticle

3 Scopus citations

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.

Original languageEnglish (US)
Article number014401
JournalPhysical Review Accelerators and Beams
Volume21
Issue number1
DOIs
StatePublished - Jan 19 2018

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)
  • Surfaces and Interfaces

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