Superconducting Magnet Endstation

Overview

The beamline is sourced by twin elliptically polarizing undulators (EPU43.5). The twin EPUs can operates in parallel and collinear modes. A plane mirror M1 deflects the beam by 2° to reduce the heat load and cut off the high energy X-rays. The monochromator is a variable-line-spacing plane grating monochromator type, consisting a plane mirror and two different gratings. Monochromatized X-ray beam is switchable into two branches by the ellipsoidal cylindrical mirror M3. The parallel beams is reflected to the exist slit by M3. Then they are reflected by M6 and further focused by KB mirror set (M7&8) to the Superconducting Magnet (SCM) Endstation and Cryo-PEEM Endstation. A chopper is place behind the exist slit to make the parallel beams alternately illuminating the SCM Endstation. The beam sizes at the SCM Endstation and PEEM Endstation are 200×40 m and 26×53 m. When M3 removed from optical path, the collinear beams are reflected and focused by KB mirror set (M4&5) to the Vector Magnet (VM) Endstation. The beam sizes at the VM Endstation is  3×3 m.

Key Performance