The Advanced Photon Source
a U.S. Department of Energy Office of Science User Facility

APS Scientific Computation Seminar Series

The Advanced Photon Source (APS) at Argonne organizes an ongoing seminar series, the APS Scientific Computation Seminar Series, focused on various aspects of computation for synchrotron science; talks are related to data analysis, reconstruction, theory, simulation, optimization, machine learning, automation, and visualization. The seminar provides an opportunity to present and learn about state-of-the-art software and the application of computational, AI/ML and mathematical techniques to synchrotron science.
Next Seminar:
Title:Compressed Sensing-based Data Collection Strategies
Presenter(s):Dr. James Weng
Beamline Scientist
X-Ray Science Division, Advanced Photon Source (APS), Argonne National Laboratory
Date:April 1, 2024
Time:1:00 PM (Central Daylight Savings Time)
Location (hybrid):Join ZoomGov Meeting…
Meeting ID: 160 144 4470
Passcode: 937918
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Meeting ID: 160 144 4470
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Abstract:With the advent of brighter light sources there are new challenges in data collection. Naively increasing
exposure time can easily destroy both the sample and detector, resulting in useless measurements and
expensive instrument damage. In the case of disordered materials, where material defects are the
information of interest, beam damage (which creates new defects) must be avoided during measurement.
Here we present compressed sensing-based measurement strategies, which take advantage of the
structured nature of data in order to provide measurements with minimal beam exposure. By leveraging
modern signal processing and computing resources, these strategies not only reduce necessary collection
time, but also provide less noisy measurements than conventional measurement strategies.
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