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Beam and sample movement compensation for robust spectro-microscopy measurements on a hard X-ray nanoprobe.

ABSTRACT: Static and in situ nanoscale spectro-microscopy is now routinely performed on the Hard X-ray Nanoprobe beamline at Diamond and the solutions implemented to provide robust energy scanning and experimental operation are described. A software-based scheme for active feedback stabilization of X-ray beam position and monochromatic beam flux across the operating energy range of the beamline is reported, consisting of two linked feedback loops using extremum seeking and position control. Multimodal registration methods have been implemented for active compensation of drift during an experiment to compensate for sample movement during in situ experiments or from beam-induced effects.

SUBMITTER: Quinn PD

PROVIDER: S-EPMC8415335 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature

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Beam and sample movement compensation for robust spectro-microscopy measurements on a hard X-ray nanoprobe.

Quinn Paul D PD Gomez-Gonzalez Miguel M Cacho-Nerin Fernando F Parker Julia E JE

Journal of synchrotron radiation 20210819 Pt 5

Static and in situ nanoscale spectro-microscopy is now routinely performed on the Hard X-ray Nanoprobe beamline at Diamond and the solutions implemented to provide robust energy scanning and experimental operation are described. A software-based scheme for active feedback stabilization of X-ray beam position and monochromatic beam flux across the operating energy range of the beamline is reported, consisting of two linked feedback loops using extremum seeking and position control. Multimodal reg ...[more]

PMID: 34475300

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Dataset Information

Beam and sample movement compensation for robust spectro-microscopy measurements on a hard X-ray nanoprobe.

Publications

Beam and sample movement compensation for robust spectro-microscopy measurements on a hard X-ray nanoprobe.

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