An X-ray free-electron laser with a highly configurable undulator and integrated chicanes for tailored pulse properties.

ABSTRACT: X-ray free-electron lasers (FELs) are state-of-the-art scientific tools capable to study matter on the scale of atomic processes. Since the initial operation of X-ray FELs more than a decade ago, several facilities with upgraded performance have been put in operation. Here we present the first lasing results of Athos, the soft X-ray FEL beamline of SwissFEL at the Paul Scherrer Institute in Switzerland. Athos features an undulator layout based on short APPLE-X modules providing full polarisation control, interleaved with small magnetic chicanes. This versatile configuration allows for many operational modes, giving control over many FEL properties. We show, for example, a 35% reduction of the required undulator length to achieve FEL saturation with respect to standard undulator configurati

SUBMITTER: Prat E 

PROVIDER: S-EPMC10442322 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature