Dream Beam

DOE x‐ray light sources facilities such as the Advanced Photon Source, the LINAC Coherent Light Source and the Advanced Light Source are undergoing major upgrades to increase the source brightness and enable groundbreaking science, based on laser‐like high coherent flux. The Diffraction‐limited Radiation Enhancement with Adaptive Mirrors (DREAM) project takes advantage of recent technological developments in the field of x‐ray adaptive optics to shape and control coherent x‐ray wavefronts at the nanometer level, tuning their properties in novel ways.

This work will develop automated beamline alignment procedures using adaptive optics to achieve optimal performance during routine user operation, using machine learning procedures. It will also seek the tighter integration of beamlines with their experimental endstations, demonstrating dynamic x‐ray sample illumination for high‐throughput data collection and autonomous experiments. The project will explore the use of adaptive optics to engineer wavefronts to give rise to new contrast mechanisms and higher sensitivity in experiments, tuning the phase of the light when it interacts with the sample.

The DREAM beam project represents a critical, collaborative step forward toward enabling high‐speed experiments for in‐operando studies of new micro‐electronics, quantum devices, or batteries.


This is a project over five years, with the following goals:

  1. Develop a framework for automated alignment of coherent beamlines: Bring together the latest instrument control software developments and use ALS beamlines to demonstrate a successful deployment.
    impact: making the best use possible of beamlines at upgraded light source facilities

  2. Development of novel adaptive optics: Demonstrate that x-ray adaptive optics developed for space applications can be used for light source experiments, and perform the metrology of these devices at APS.
    impact: Extending the capabilities of adaptive optics and make them an essential tool of new x- ray beamline and endstations

  3. Experimental demonstration of dynamic illumination control: Demonstrate that x-ray beam steering can be achieved.
    impact: enabling faster experiments for in-situ/in-operando and multi-modal characterization.

  4. Study of wavefront engineering and exploration of experimental opportunities
    impact: opening the doors to a whole new class of coherent x-ray experiments.