What does the Large Hadron Collider at Cern actually do?

As time has gone on many theories have come to terms with the atom. And as technology has improved we have looked further into the atom. Scientists are now using the LHC to see if they can create a explosion with the atom by smashing particles together to see what happened when the universe began such as the big bang theory. Using this they are looking to find out the answer to what is matter? Using the LHC they are trying to create anti-matter, this anti-matter may be the size of a Golf ball and could destroy everything, but if they can create this matter it may just give the answers to what is matter and how the universe begun.