Speaker
Description
We designed and carried out an experiment to investigate transition radiation X-rays generated by relativistic electrons traversing through self-built multilayered radiators. The experiment was selected as a winning project in CERN’s 2025 Beamline for Schools competition. Measurements were performed at the ELSA accelerator at the University of Bonn using electron beam energies of 1.8 - 3.2 GeV. The detector setup consisted of a TJ-Monopix silicon pixel detector, combined with a four-plane MIMOSA beam telescope and an additional ATLAS ITk plane. The measured distributions show clear signatures of transition radiation in two of the target materials and demonstrate that low-cost materials can produce radiation yields comparable to those of conventional radiator foils within the explored energy range. The results are in good agreement with theoretical expectations for multilayer transition radiation and highlight the potential of accessible materials for cost-efficient detector studies.