Meh - if you know anything about black holes, you know this can't create one. This is only about as dangerous as a small experimental reactor, due to the proton radiation etc.
If there successful at finding graviton particles, well, that's the holy grail of communicating with E.T.
I'll have to get my tinfoil hat ready again!
I'm not a physicist, but I did stay at a holiday inn express last night!