To mark the re-launch of the Large Hadron Collider, the world's most powerful particle accelerator, this album examines how an accelerator works, why the LHC failed in 2008 and what scientists hope its high-energy collisions will reveal. The audio tracks

Transcript -- An introduction to this album

A basic description of what the LHC is, how particle collisions will be detected and what physicists hope to discover

Transcript -- A basic description of what the LHC is, how particle collisions will be detected and what physicists hope to discover

An explosion in the beam tunnel caused a major setback. Accelerator scientists examine what went wrong and outline how the beam gathers speed, ready for collision

Transcript -- An explosion in the beam tunnel caused a major setback. Accelerator scientists examine what went wrong and outline how the beam gathers speed, ready for collision

The next generation Super Luminosity LHC is already in planning. But, in the future, the SLHC may be eclipsed by the Next Linear Collider

Transcript -- The next generation Super Luminosity LHC is already in planning. But, in the future, the SLHC may be eclipsed by the Next Linear Collider