S-TOMCAT beamline receives first X-ray light

On June 25th 2025, the S-TOMCAT beamline shutters were opened to receive first X-ray light from the new SLS 2.0 storage ring. On June 26th, full white X-ray beam generated with a 400 mA ring current was brought into the experimental hutch with all beamline shutters open. The beam path glowed purple due to the ionization of air by the X-ray beam (Slide 1). On June 27th, this milestone was marked by taking first X-ray tomographic images (Slide 2, 3). The TOMCAT beamline crew with PSI colleagues are all smiles for this milestone in the TOMCAT 2.0 upgrade project (Slide 4). 

See our PSI LinkedIn post. 

White X-ray beam in the S-TOMCAT experimental hutch glowing purple due to ionization of air.
X-ray tomographic image of a 3D printed object symbolically celebrating the first X-ray light at S-TOMCAT.
X-ray tomographic scan of a marine sediment (diameter: 5 mm) from the Arctic 9.2 m below the seafloor, courtesy of Dr. Madhusudhan BN Murthy, Institute Univ. of Southampton.
S-TOMCAT First Light Group Photo. (Front row, left to right) Rebecca Gattringer (Radiation Protection and Safety), Marco Stampanoni (TOMCAT), Federica Marone (TOMCAT) (second row, left to right) Philipp Zuppiger (TOMCAT), Anne Bonnin (TOMCAT), Christian Schlepuetz (TOMCAT), Margie Olbinado (TOMCAT), Goran Lovric (TOMCAT); (third row, left to right) Juri Honegger (Area Coordination), Dominik Meister (Technical Groups Coordination), Istvan Mohacsi (Controls), Oliver Celik (Radiation Protection and Safety).
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