A tunable wedge-shaped absorber for hard X-ray synchrotron applications

Area of Science:

• Materials Science
• Physics
• Synchrotron Radiation Instrumentation

Background:

• Traditional X-ray beam absorbers (fixed-thickness sheets, binary exchangers) have limitations in compactness and tunability.
• Hard X-ray synchrotron beamlines require advanced components for precise radiation control.

Purpose of the Study:

• To introduce a novel concave aluminum wedge-shaped absorber concept for hard X-ray synchrotron beamlines.
• To demonstrate a compact, tunable X-ray attenuation system with a wide dynamic range.

Main Methods:

• Conceptual design of a concave aluminum wedge absorber.
• Integration with a single linear positioner for controlled movement.
• Experimental validation at the Nanofocus Endstation of the MINAXS beamline, PETRA III.

Main Results:

• The wedge absorber concept enables a compact system design.
• Precise tunability over a large energy range was achieved.
• A wide attenuation range was demonstrated, surpassing conventional methods.

Conclusions:

• The concave aluminum wedge absorber represents a significant advancement in X-ray beam attenuation technology.
• This innovative design offers enhanced control and flexibility for hard X-ray synchrotron applications.
• The system's performance was validated in a real-world synchrotron environment.