BL4S is an international physics competition organized by CERN and DESY, allowing high school students to propose an experiment to be conducted at a particle accelerator beamline. Winning teams travel to CERN in Geneva, Switzerland, or DESY in Hamburg, Germany, to carry out their experiments with the support of professional scientists.
Science | STEM
CERN’s Beamline for Schools Competition (BL4S)
Share this Comp:
Facebook
Twitter
LinkedIn
WhatsApp

Contact Info
- Phone: Currently Unavailable
- Contact: bl4s.team@cern.ch
- Website
- CERN, DESY
Follow this Comp on Social
Great For . . .
Helpful Articles
Maximizing Educational Impact
February 16, 2025
No Comments
Sponsorships Closing the STEM Gap
February 16, 2025
No Comments
The Power of Partnerships in Robotics Competitions
February 16, 2025
No Comments
About the competition
Comp Info
- Estimated Ann. Participants: 300
- Cost: Free Travel, accommodation, and meals for the winning teams are covered by the organizers.
- Estimated Time Commitment: Major
- Participant Format: Small Team
- Event Format: Online Asynchronous
- Competition Format: Simulation/Challenge
- Reach: International
- Event Size: Very Small
Participation Information
Teams of at least five students and one adult coach can submit their proposals online by April 10, 2024. The proposal should involve a creative and feasible experiment using the beamline.
Open to teams of high school students worldwide, with at least five students and one adult coach.
Fully funded trip to CERN for winning teams, certificates, and recognition
Teams of at least five students and one adult coach can submit their proposals online by April 10, 2024. The proposal should involve a creative and feasible experiment using the beamline.
1. Form a team and choose a coach. 2. Develop a proposal for a particle physics experiment using the beamline. 3. Submit the proposal by April 10, 2024. 4. Winners are invited to CERN or DESY to conduct their experiment.
Research materials, access to information on particle physics, and support from national contacts or CERN's resources.
Judging is based on creativity, feasibility, and scientific value. The technical feasibility and safety of the experiment are key criteria for selection.