Generation of Multi-Color Attosecond X-Ray Radiation Through Modulation Compression

TL;DR

This paper introduces a novel scheme to produce tunable multi-color attosecond X-ray pulses using energy-chirped electron beams, laser modulators, and bunch compressors, enabling high-power coherent radiation for advanced light sources.

Contribution

It presents a new method combining energy chirping, laser modulation, and compression to generate multi-color attosecond X-ray pulses from a relatively low current electron beam.

Findings

Generated two attosecond pulses at 2.2 nm and 3 nm wavelengths.

Achieved peak power over 200 MW for the X-ray pulses.

Demonstrated feasibility with a 30 A, 200 nm laser seeded electron beam.

Abstract

In this paper, we propose a scheme to generate tunable multi-color attosecond coherent X-ray radiation for future light source applications. This scheme uses an energy chirped electron beam, a laser modulators, a laser chirper and two bunch compressors to generate a multi-spike prebunched kilo-Ampere current electron beam from a few tens Ampere electron beam out of a linac. Such an electron beam transports through a series of undulator radiators and bunch compressors to generate multi-color coherent X-ray radiation. As an illustration, we present an example to generate two attosecond pulses with $2.2$ nm and $3$ nm coherent X-ray radiation wavelength and more than $200$ MW peak power using a $30$ Ampere $200$ nm laser seeded electron beam.