The Institute of Solid State Physics, University of Latvia (ISSP UL), in collaboration with the ISSP UL Foundation and the Faculty of Physics, Mathematics, and Optometry of the University of Latvia (LU FMOF), is proud to announce the 12th European Conference on Luminescent Detectors and Transformers of Ionizing Radiation (LUMDETR 2024), will be held in Riga, Latvia from June 16th to 21st, 2024.