Beamline for Schools (BL4S) is an international physics competition for high school students organised by CERN, the European Organization for Nuclear Research, in Geneva, Switzerland and DESY, Hamburg, Germany. It invites teams of high-school students from all around the world to propose a scientific experiment that they want to perform at a particle accelerator. The three teams that prepare the best proposals will win a trip to a particle accelerator facility to perform their experiments at a fully-equipped beamline.

In 2023 the experiments will be performed at one of the beamlines of the CERN Proton Synchrotron accelerator as well as at a beamline of the DESY-II synchrotron. There are additional prizes for a shortlist of teams and certificates for all participants. Learn more about BL4S and have a look at the "how to apply" section.


The results of BL4S 2023 will be announced in June. Stay tuned!

Support this project

We are grateful to all our sponsors and supporters whose contributions help us make possible the Beamline for Schools Competition. 

To support the Beamline for Schools project, as well as other CERN projects that have an impact on society, donate through the CERN & Society website.