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25 August 2020 Preliminary design of a set of four beamlines for the DLSR upgrade of the advanced light source
Antoine Wojdyla, Henry P. Alvarez, Maxime Bergeret, Albert Sheng, Diane Bryant, Arnaud P. Allezy, Grand D Cutler, Valeriy V. Yashchuk, Alastair A. MacDowell, Kenneth A Goldberg, Manuel Sanchez del Rio, Simon A. Morton, Elaine DiMasi, Howard A. Padmore
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Proceedings Volume 11493, Advances in Computational Methods for X-Ray Optics V; 1149304 (2020) https://doi.org/10.1117/12.2569298
Event: SPIE Optical Engineering + Applications, 2020, Online Only
Abstract
The upgrade of the Advanced Light Source at Lawrence Berkeley National Lab to a Diffraction-Limited Storage Ring (DLSR) will feature four new and upgraded beamlines, designed to take full advantage of the coherence and high brightness of the insertion device source operating mostly in the soft x-ray regime (100–2000 eV). The round and highly coherent beam drives specific design choices for the photon transport optics and monochromator, and technical challenges in terms of performances, optical tolerances and stability. We have used the simulation tools Shadow (for raytracing) or SRW (wavefront propagation), and their implementation in OASYS and Sirepo to refine tolerance specifications, using their scripting capabilities and new add-ons to perform a comprehensive beamline analysis and confirm that specifications matched our performance requirements, taking into account partial coherence and issues related to heatload.
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Antoine Wojdyla, Henry P. Alvarez, Maxime Bergeret, Albert Sheng, Diane Bryant, Arnaud P. Allezy, Grand D Cutler, Valeriy V. Yashchuk, Alastair A. MacDowell, Kenneth A Goldberg, Manuel Sanchez del Rio, Simon A. Morton, Elaine DiMasi, and Howard A. Padmore "Preliminary design of a set of four beamlines for the DLSR upgrade of the advanced light source", Proc. SPIE 11493, Advances in Computational Methods for X-Ray Optics V, 1149304 (25 August 2020); https://doi.org/10.1117/12.2569298
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KEYWORDS
Light sources
Tolerancing
Monochromators
Optical simulations
Photon transport
Ray tracing
Wave propagation
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