The international Conference on Synchrotron Radiation Instrumentation (SRI) is a successful conference series continuing for nearly 40 years, organised by the community of worldwide synchrotron radiation (SR) and X-ray free electron laser (XFEL) facilities. This 15th SRI conference will again be hosted by Deutsches Elektronen-Synchrotron (DESY) and the European XFEL. The SRI conferences are important for the worldwide community to share key experiences in scientific and technical developments. Having timely access to the latest information and new ideas is of crucial importance for the future development of all light sources, the development of the field as a whole as well as for the economic and political development of participating countries. Along the conference an industry exhibition is scheduled. Abstract submission for contributed talks and posters has been opened. Abstract submission closes: 2 April 2024 (extended deadline). Registration opens: 25 March 2024. Early-bird registration deadline: 1 June 2024. Registration deadline:  31 July 2024.