Effect of small radiation divergence on the measurement of source size

Peter P. Ilinski

doi:10.1117/12.330350

6 November 1998 Effect of small radiation divergence on the measurement of source size

Peter P. Ilinski

Proceedings Volume 3449, X-Ray Microfocusing: Applications and Techniques; (1998) https://doi.org/10.1117/12.330350
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Third-generation storage rings have small particle beam emittances. The size of the particle beam can be determined from the measured image size of the focused radiation source. Undulators are preferred as radiation sources at third-generation storage rings, the radiation emitted by an undulator has both small size and divergence. The effect of the small beam divergence on determination of the source size is discussed here. The analysis is performed in an approximation of a Gaussian distribution of the radiation intensity. The paraxial approximation and matrix methods were also used for this derivation. It was fond that the effect of the small beam divergence depends on the ratio of the angular acceptance of the source to the divergence of the emitted radiation.

Citation Download Citation

Peter P. Ilinski "Effect of small radiation divergence on the measurement of source size", Proc. SPIE 3449, X-Ray Microfocusing: Applications and Techniques, (6 November 1998); https://doi.org/10.1117/12.330350

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