The man taking over the Large Hadron Collider – only to switch it off

Next head of Cern backs massive replacement for world's largest machine to investigate mysteries of the universe

Mark Thomson, a professor of experimental particle physics at the University of Cambridge, has landed one of the most coveted jobs in global science. But it is hard not to wonder, when looked at from a certain angle, whether he has taken one for the team.

On 1 January, Thomson takes over as the director general of Cern, the multi-Nobel prizewinning nuclear physics laboratory on the outskirts of Geneva. It is here, deep beneath the ground, that the Large Hadron Collider (LHC), the largest scientific instrument ever built, recreates conditions that existed microseconds after the big bang.