1. Niels Breckwoldt, Sang-Kil Son, Tommaso Mazza, Aljoscha R"orig, Rebecca Boll, Michael Meyer, Aaron C. LaForge, Debadarshini Mishra, Nora Berrah, and Robin Santra, “Machine-learning calibration of intense x-ray free-electron-laser pulses using Bayesian optimization,” Phys. Rev. Res. 5, 023114 (2023).
2. Laura Budewig, Sang-Kil Son, and Robin Santra, “State-resolved ionization dynamics of neon atom induced by x-ray free-electron-laser pulses,” Phys. Rev. A 107, 013102 (2023).
3. Tommaso Mazza, Thomas M. Baumann, Rebecca Boll, Alberto De Fanis, Patrik Grychtol, Markus Ilchen, Jacobo Montaño, Valerija Music, Yevheniy Ovcharenko, Nils Rennhack, Daniel E. Rivas, Aljoscha Rörig, Philipp Schmidt, Sergey Usenko, Pawel Ziołkowski, Daniele La Civita, Maurizio Vannoni, Harald Sinn, Barbara Keitel, Elke Plönjes, Ulf Fini Jastrow, Andrey Sorokin, Kai Tiedtke, Klaus Mann, Bernd Schäfer, Niels Breckwoldt, Sang-Kil Son, and Michael Meyer, “The beam transport system for the Small Quantum Systems instrument at the European XFEL: optical layout and first commissioning results,” J. Synchrotron Radiat. 30, 457–467 (2023).
4. Aljoscha Rörig, Sang-Kil Son, Tommaso Mazza, Philipp Schmidt, Thomas M. Baumann, Benjamin Erk, Markus Ilchen, Joakim Laksman, Valerija Music, Shashank Pathak, Daniel E. Rivas, Daniel Rolles, Svitozar Serkez, Sergey Usenko, Robin Santra, Michael Meyer, and Rebecca Boll, “Multiple-core-hole resonance spectroscopy with ultraintense X-ray pulses,” Nat. Commun. 14, 5738 (2023).