The new microfocus station for the NOTOS beamline at the ALBA synchrotron

TUP59
16 Sept 2025, 17:00
1h
Poster Session Room (The Loop)

Poster Session Room

The Loop

Poster Presentation End Stations Tuesday Poster Session

Speaker

Antoni Garcia-Herreros (ALBA Synchrotron (Spain))

Description

The NOTOS beamline at ALBA combines X-ray Absorption Spectroscopy (XAS) and X-ray Diffraction (XRD) experiments, operating in the 4.5-30 keV range. Since 2022, it has offered two end stations (ES): one for metrology and XAS, and another combining XAS and XRD. To overcome the current 100×100 µm² spot size limitation, we present a third microfocus ES (µFo-ES), planned for commissioning by the end of 2025. It will provide spot sizes below 10×10 µm² with a flux >7.3·10¹³ ph/s/mm², enabling XAS in fluorescence and transmission. It uses the existing optics plus a pair of Kirkpatrick–Baez (KB) mirrors working under high vacuum. The KB positioning system is based on an in-housed developed design and the mirrors will be elliptically bent using ALBA mirror benders with sub-nanometric resolution. High-precision slits placed upstream the KB will ensure beam size, collimation, and diagnostics. The µFo-ES will integrate a compact sample environment including a ionization chamber, on-axis camera, and a fluorescence detector for variable incident angles. To ensure compatibility with downstream ES and prevent photon flux loss, the µFo-ES has been designed to be fully retractable from the beam path.

Funding Agency

InCaem

Author

Antoni Garcia-Herreros (ALBA Synchrotron (Spain))

Co-authors

Nahikari Gonzalez (ALBA Synchrotron (Spain)) Josep Nicolás (ALBA Synchrotron (Spain)) Carles Colldelram (ALBA Synchrotron (Spain)) Carlo Marini (ALBA Synchrotron (Spain)) Eduardo Villalobos (ALBA Synchrotron (Spain)) Carlos Escudero (ALBA Synchrotron (Spain)) Lucia Aballe (ALBA Synchrotron (Spain))

Presentation materials

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