Metrology of 1.2m-long x-ray mirrors mounted in a bender mechanism for QUATI beamline/SIRIUS

Regis S. de Oliveira; Gustavo P. Lima; Willian H. Wilendorf; Gustavo B. de Almeida; Humberto R. Junior; Victor dos S. Ynamassu; Rafael C. de Moraes; Giovanni G. Ribeiro; Ramon G. Paulino; Henri Guadalupi; Luca Peverini; Bernd C. Meyer

doi:10.1117/12.3035467

8 October 2024 Metrology of 1.2m-long x-ray mirrors mounted in a bender mechanism for QUATI beamline/SIRIUS

Regis S. de Oliveira, Gustavo P. Lima, Willian H. Wilendorf, Gustavo B. de Almeida, Humberto R. Junior, Victor dos S. Ynamassu, Rafael C. de Moraes, Giovanni G. Ribeiro, Ramon G. Paulino, Henri Guadalupi, Luca Peverini, Bernd C. Meyer

Author Affiliations +

Proceedings Volume 13150, Advances in X-Ray/EUV Optics and Components XIX; 1315009 (2024) https://doi.org/10.1117/12.3035467
Event: Optical Engineering + Applications, 2024, San Diego, California, United States

Abstract

The QUATI (Quick X-Ray Absorption Spectroscopy for Time and space resolved experiments) beamline will be dedicated to high-quality x-ray absorption spectroscopy experiments, with temporal and spatial resolution on a millisecond scale and in situ conditions: XANES, EXAF and XES. The beam extracted from a bending magnet source (3.2T) is collimated vertically by a cylindrical mirror (bounce up deflecting) located at 15m from the source inside the frontend, passes a double crystal monochromator (24m), and is then focused by a toroidal mirror (bounce down deflecting) located at 30m from the source. Both mirrors have an optical length of 1.2m and are equipped with a mechanical bender. The surface quality of both mirrors in the low spatial frequency range is characterized by the Long Trace Profiler (LTP). Five gravity compensators evenly distributed along the mirror are adjusted manually. With the optics measured in its orientation as in the beamline, a height error of less than 20nm PV for the M1 mirror and less than 40nm PV for the M2 mirror was achieved. The final height error adjusted by the gravity compensators is slightly better than the pure polishing due to the low frequency nature of the deformation caused by gravity. The result attends the project specifications for the QUATI beamline. Additionally, mechanical stability and temporal accommodation of the mirrors in the bending system were investigated.

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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Regis S. de Oliveira, Gustavo P. Lima, Willian H. Wilendorf, Gustavo B. de Almeida, Humberto R. Junior, Victor dos S. Ynamassu, Rafael C. de Moraes, Giovanni G. Ribeiro, Ramon G. Paulino, Henri Guadalupi, Luca Peverini, and Bernd C. Meyer "Metrology of 1.2m-long x-ray mirrors mounted in a bender mechanism for QUATI beamline/SIRIUS", Proc. SPIE 13150, Advances in X-Ray/EUV Optics and Components XIX, 1315009 (8 October 2024); https://doi.org/10.1117/12.3035467

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