Demonstration of Two-Color X-ray Free-Electron Laser Pulses with a Sextupole Magnet

Abstract

We present measurements of two-color X-ray free electron laser (FEL) pulses generated with a novel scheme utilizing a sextupole magnet. The sextupole, in combination with a standard orbit control tool, is used to suppress the radiation from the bunch core, while keeping the head and the tail of the beam lasing, each at a different photon energy. The method is simple, cost-effective and applicable at any repetition rate. We demonstrate the tunability of the scheme and discuss its advantages and practical limitations.

Accepted at Physicale Review Accelerators and Beams

Cited by in corpus (2)

• A perfect X-ray beam splitter and its applications to time-domain interferometry and quantum optics exploiting free-electron lasers
• Multi-color XFEL pulses with variable color separation and time delay for multi-frame diffraction imaging