On the Possibility of Medium-Energy Compact X-ray Free-Electron Laser

TL;DR

This paper explores the potential for a compact, cost-effective X-ray free-electron laser using an irregular microundulator, which could operate efficiently at medium electron energies due to enhanced gain.

Contribution

It introduces a novel model of irregular microundulator that significantly increases gain, enabling the design of a cheaper, more compact X-ray free-electron laser.

Findings

Gain function is dozens of times higher than conventional undulators.

The model allows construction of a medium-energy, compact X-ray FEL.

Potential for drastically reducing costs and size of X-ray FELs.

Abstract

The problem of X-ray Free-Electron Laser operating on self-amplified spontaneous emission in irregular microundulator is considered. The case when the spectrum width of spontaneous radiation is conditioned by the spatial distribution of sources creating the undulating field is considered. In this case gain function of the stimulated radiation is dozens of times higher than that of the conventional undulators. We propose a model of irregular microundulator, which can be used to construct a drastically cheap and compact X-ray free-electron laser operating on medium energy electron bunch.