UChicago Argonne, LLC

The United States of America As Represented by the Department of Energy

Gopal Shenoy

Jin Wang

Deepkishore Mukhopadhyay

Daniel Lopez

Donald A Walko

Il-Woong Jung

Deming Shu

John W Lewellen

Nikolai Vinokurov

A method and apparatus are provided for implementing Bragg-diffraction leveraged modulation of X-ray pulses using MicroElectroMechanical systems (MEMS) based diffractive optics. An oscillating crystalline MEMS device generates a controllable time-window for diffraction of the incident X-ray radiation. The Bragg-diffraction leveraged modulation of X-ray pulses includes isolating a particular pulse, spatially separating individual pulses, and spreading a single pulse from an X-ray pulse-train.

Diffraction leveraged modulation of X-ray pulses using MEMS-based X-ray optics

A method and apparatus are provided for spatially modulating X-rays or X-ray pulses using microelectromechanical systems (MEMS) based X-ray optics. A torsionally-oscillating MEMS micromirror and a method of leveraging the grazing-angle reflection property are provided to modulate X-ray pulses with a high-degree of controllability.

Method for spatially modulating X-ray pulses using MEMS-based X-ray optics

A new and improved undulator design is provided that enables a variable period length for the production of synchrotron radiation from both medium-energy and high-energy storage rings. The variable period length is achieved using a staggered array of pole pieces made up of high permeability material, permanent magnet material, or an electromagnetic structure. The pole pieces are separated by a variable width space. The sum of the variable width space and the pole width would therefore define the period of the undulator. Features and advantages of the invention include broad photon energy tunability, constant power operation and constant brilliance operation.

Variable-period undulators for synchrotron radiation

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Naperville, IL, United States of America

Gopal Shenoy