Seminaire SOLEIL - Olivier MATHON - 29 juin à 14h00 - Amphi SOLEIL

ESRF-EBS and spectroscopy, example of beamline ID24

Olivier MATHON
European Synchrotron Radiation Facility, Grenoble, France

Lundi 29 juin 2026 – 14h00 - Amphithéâtre SOLEIL

ID24 is an ESRF beamline dedicated to hard X-ray Absorption Spectroscopy (XAS). The beamline is based on an undulator source and comprises two branches, ID24-ED and ID24-DCM.

ID24-ED is an energy dispersive XAS beamline, optimized for ultrafast XAS measurements, reaching timescales down to the single bunch (100 ps), enabled by the high flux up to 10¹³ ph/s delivered by the undulator source. Its primary application is the study of matter under laser-induced dynamic compression, generated by the High-Power Laser Facility (HPLF).

ID24-DCM is a high-brilliance XAS beamline based on a next-generation scanning Double Crystal Monochromator (DCM) developed by the ESRF. It covers an X-ray energy range from 5 to 45 keV. Taking advantage of the new EBS characteristics, this branch combines high flux up to 10¹³ ph/s with a variable X-ray beam size ranging from 1x1 mm² down to 500x500 nm² (FWHM).

After a brief introduction of ESRF-EBS and spectroscopy activities at ESRF, I will describe the ID24 beamline, with particular emphasis on ID24-DCM branch, which has been specifically developed and optimized for ESRF-EBS. I will present the new DCM developed by ESRF and the effort made to improve the synchronization between the DCM and the undulator source. Finally, I will illustrate the capabilities of this beamline through recent technical and scientific results.

Figure 1. BM23 and ID24, a beamline complex dedicated to XAS at ESRF

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