Beamline Optics

Overview

The beamline is sourced by an elliptically polarizing undulator (EPU46). A plane mirror (M1) collects the diverging beam from the undulator and deflects it by 2° to reduce heat load and filter out high energy X-rays. The monochromator is a Plane Grating Monochromator (PGM), consisting a plane mirror (M2) and three different variable-line-spacing (VLS) gratings optimized for varied energy ranges, revolving powers and photon fluxes. The monochromator energy-disperses the X-ray, which is then focused vertically by the VLS gratings. The monochromatized X-ray beam is horizontal focused the ellipsoidal mirror (M3) to the exist slit. At the endstation, the X-ray beam is refocused using a zone plate (ZP) to some specific size (such as 25, 45, 70, 100 nm) for the experiments.

Key Performance

Experimental Endstation

Key Performance

Overview

An endstation designed for soft X-ray spectro-nanoscopy, integrates multiple techniques and operational modes, incorporating piezoelectric stages and a laser interferometer. 

Techniques: Ptychography, STXM, LE-XRF

Operation modes: 2D/3D imaging; TEM compatible 3D cryogenic imaging

Detectors: sCMOS, PD/APD, 4 channel-SDD, channeltron