Work

Characterization of coherent X-ray beam using Young’s double-slit experiment at PAL-XFEL

Year: 2026

Type: article

Abstract: With the increasing brilliance of fourth-generation light sources, the enhanced coherence of X-rays has spasrked growing interest in coherent X-ray experiments. To ensure the reliability of such experiments, it is essential to characterize the coherence under actual experimental conditions. In this study, we measured and analyzed the spatial coherence and beam-pointing variation of femtosecond X-ray pulses generated by the Pohang Accelerator Laboratory X-ray free-electron laser (PAL-XFEL). We provide a detailed description of the measurement procedures and beam characterization techniques employed. The results offer practical guidelines for designing and conducting coherent X-ray experiments at fourth-generation light sources.

Source: Journal of the Korean Physical Society

DOI: 10.1007/s40042-026-01566-z

Authors: Junha Hwang, Sangsoo Kim, Daewoong Nam

Institutions: Pohang University of Science and Technology, Pohang Accelerator Laboratory

Language: English

Topic: Particle Accelerators and Free-Electron Lasers

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,290

Funders: National Research Foundation, Pohang University of Science and Technology, National Research Foundation of Korea