The LCLS-II x-ray optical system: from metrology to routine operation

Matthew H. Seaberg; Lance Lee; May Ling Ng; William Lane

doi:10.1117/12.2677199

4 October 2023 The LCLS-II x-ray optical system: from metrology to routine operation

Matthew H. Seaberg, Lance Lee, May Ling Ng, William Lane

Proceedings Volume PC12695, Advances in Metrology for X-Ray and EUV Optics X; PC126950A (2023) https://doi.org/10.1117/12.2677199
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

With the nearly full spatial coherence of X-ray free electron lasers comes unprecedented requirements on the precise figure of X-ray mirrors. For example, the Time-resolved AMO Instrument (TMO) requires a bendable Kirkpatrick-Baez (KB) mirror system in order to produce a range of focus spot sizes, while maintaining nm-level figure error across the corresponding range of elliptical shapes. Here we describe the process of TMO KB mirror characterization using optical metrology, the detailed comparison with at-wavelength wavefront sensors during instrument commissioning, and the implementation of an automatic focusing system that ties together the wavefront sensor output with the mirror bender controls.

Conference Presentation

Citation Download Citation

Matthew H. Seaberg, Lance Lee, May Ling Ng, and William Lane "The LCLS-II x-ray optical system: from metrology to routine operation", Proc. SPIE PC12695, Advances in Metrology for X-Ray and EUV Optics X, PC126950A (4 October 2023); https://doi.org/10.1117/12.2677199

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