Beamline for Schools (BL4S) is a physics competition open to high school students from around the world. Participants are invited to prepare a proposal for an experiment to be conducted at the beamline of a particle accelerator, either at CERN (European laboratory for particle physics in Geneva, Switzerland), DESY (Deutsches Elektronen-Synchrotron in Hamburg, Germany) or ELSA (Elektronen-Stretcher-Anlage in Bonn, Germany). In 2025, we will have five winning teams joining the previous facilities. 

The celebration ceremony will take place in a hybrid format, on-site at CERN, DESY, ELSA and online. On-site participants at CERN, DESY, and ELSA will have the opportunity to visit the BL4S experimental areas after the ceremony and to join the celebration reception. 

Location at CERN: 3162/1-K01; East Area (building 157); R1

Location at DESY: DESY II; Test Beam Hall B (building 27)

Location at ELSA: FTD Presentation Room (Kreuzbergweg 24, 53115 Bonn)