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Proceedings Paper

Dynamic vacuum analysis for APS high heat flux beamline front ends using optical ray-tracing simulation methods
Author(s): Shenglan Xu; Robert W. Nielsen
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Paper Abstract

The high-power and high-flux x-ray beams produced by third generation synchrotron radiation sources such as the Advanced Photon Source (APS) can cause significantly high gas desorption rates on beamline front-end components if beam missteering occurs. The effect of this gas desorption needs to be understood for dynamic vacuum analysis. To simulate beam missteering conditions, optical ray-tracing methods have been employed. The results of the ray-tracing analysis have been entered into a system-oriented vacuum program to provide dynamic vacuum calculations for determination of pumping requirements for the beamline front-ends. The APS will provide several types of synchrotron radiation sources, for example, undulators, wigglers, and bending magnets. For the purpose of this study, the wiggler source was chosen as a `worst case' scenario due to its high photon flux, high beam power, and relatively large beam cross section.

Paper Details

Date Published: 25 February 1993
PDF: 12 pages
Proc. SPIE 1739, High Heat Flux Engineering, (25 February 1993); doi: 10.1117/12.140541
Show Author Affiliations
Shenglan Xu, Argonne National Lab. (United States)
Robert W. Nielsen, Argonne National Lab. (United States)

Published in SPIE Proceedings Vol. 1739:
High Heat Flux Engineering
Ali M. Khounsary, Editor(s)

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