Resonant Imaging End Station (Open Access)

The end station is designed for soft X-ray resonant single-shot imaging (Fourier Transform Holography and Coherent Diffractive Imaging), small angle resonant scattering and optical pump - X-ray probe of fixed targets in transmission geometry with focus on magnetization dynamics and phase transitions. The system will run under HV conditions (~10^-8 to 10^-7 torr). Compatible to the design of the existing soft X-ray coherent imaging end station at SSRL beamline 13-3, see figure, the main chamber has a XYZ-theta manipulator (Omniax) with a cryostat providing a temperature range of 25-400 K. The end station is further equipped with a breadboard allowing for modular experimental setups including an aperture and a sample stage as well as beam diagnostics and timing tools for optical and X-ray beam synchronization.

A commercial in-vacuum CCD detector from Princeton Instruments, PI-MTE, is integrated in the system together with beam stops suitable for operation at higher X-ray flux. The CCD contains 2048 x 2048 pixels of 13 microns in size. A removable 500 nm Al thin filter supported on a 200 nm thick polymer is used to block the optical photons for pump-probe experiments. Optional, the end station is capable of accommodating the flange-mounted large-area, pnCCD detector of the LAMP end station enabling higher frame read-out rate up to 200 Hz (back pnCCD only). Removable pole pieces of an ex-situ electro-magnet will provide magnetic fields (~.1 Tesla) applied along the X-ray beam propagation. An in-vacuum electromagnet can used to obtain constant fields up to 0.4 Tesla.