If the new collider is a car, then what physicists did today was turn on an engine, that will now sit and warm up for a couple of months before anybody drives it anywhere. The first meaningful collisions, at an energy of 5 trillion electron volts, will not happen until late fall.So we could still disappear in a puff of logic? Bummer. The article notes, however, that the CERN scientists are amused at the common man's concerns which come, they claim, from science fiction, not fact.
I believe them. What the hell do we know about colliders? I know nothing. Physicists welcome to comment, however.