To understand physics at the most fundamental level, CERN must accelerate particles and make them collide. How is this achieved?
Watch: An overview of CERN's accelerators
Watch: "From bottle to bang"
Read: How an accelerator works
For teachers, read: Introducing the LHC in the classroom: an overview of education resources available
There are many types of particle accelerator. Physicists decide what characteristics an accelerator should have depending on what it is supposed to do.
Particle collisions result in... the creation of more particles! How are these detected?