KB mirror mechanics innovations for optimal nanobeam focus and stability at the ESRF ID01 beamline

WEP34
17 Sept 2025, 17:00
1h
Poster Session Room (The Loop)

Poster Session Room

The Loop

Poster Presentation Optics Wednesday Poster Session

Speaker

Carole Clavel (European Synchrotron Radiation Facility)

Description

The highly coherent beam delivered by the Extremely Brilliant Source allows improving beam quality and size on long nano-beamlines. To benefit from this upgrade, the focusing mirrors of the Kirkpatrick-Baez (KB) and its mechanics were redesigned to improve the nano-beam stability in the versatile experimental setup of ID01 beamline. The optical design to get a 50nmx50nm beam lead to two fixed focused elliptical mirrors with a multilayer coating and a 50nrad slope error with a working distance of 37mm. In this context, there are two crucial aspects for the mechanics: one is to be able to hold the optics without degrading the shape of the mirrors; the other is to have a very precise alignment and adjustment of the opto-mechanical equipment at the beamline. I will describe the mechanical design used to achieve these two objectives, the laboratory measurements and the results obtained on the beamline.

Author

Carole Clavel (European Synchrotron Radiation Facility)

Presentation materials

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