Description: Students operate an electron beam (300 eV) and study electrons in magnetic fields.
Before taking part in this experiment, students should already know about
- the properties of electrons and energy levels of electrons in atoms
- electric and magnetic fields, e.g. the shape of the magnetic field of a bar magnet and of a simple coil
- the deflection of electrically charged particles in magnetic fields due to the Lorentz force
- how to calculate the speed of electrons when they are accelerated by an electric field (optional)
- how to make and control a beam of electrons
- how electrons behave in electric and magnetic fields
Link to CERN physics: In the LHC, protons gain kinetic energy when passing through high electric fields (RF cavities). To keep the protons on a circular track, 1232 special supercoducting electromagnets are installed. The high magnetic field of the dipole magnets causes the deflection of these electrically charged particles due to the Lorentz force.
Availability: Can be included in the S'Cool LAB Days at CERN itinerary.
Minimum age: 16
Recommended age: 16-19