Fig. 2: Photograph of the experimental apparatus for the CDI system at EH3 BL2 of the SPring-8 Angstrom Compact free electron Laser (SACLA). | Nature Communications

Fig. 2: Photograph of the experimental apparatus for the CDI system at EH3 BL2 of the SPring-8 Angstrom Compact free electron Laser (SACLA).

From: High-fluence and high-gain multilayer focusing optics to enhance spatial resolution in femtosecond X-ray laser imaging

Fig. 2

a The main chamber, which contains (b) the focusing optics with a mirror manipulator and sample scan stages, is connected to the MPCCD detector system. In the distance of 60 mm between the downstream edge of the multilayer X-ray focusing optics and the focus, the system has two sets of four-blade slits (guard slits) and an objective lens with a 90° reflection mirror, which are switchable using a linear translation stage. The four-blade slits composed of tapered Si are essential for the CDI measurement to suppress unwanted background (parasitic) scattering from the upstream X-ray optics, including the multilayer mirrors. The optical microscope utilizes the objective lens to observe the sample at the focus using an imaging sensor located on the side of the main chamber. Samples are loaded from a load-lock chamber using a sample transfer system. Turbomolecular pumps can evacuate the main chamber to a pressure of <1 × 10−4 Pa.

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