Ok, what do you think this thing is for? I just can't bring myself to believe anyone would waste resources on that scale to look for a theoretical particle (god particle). I have two theories as to what the real purpose is so I'll throw them out there. Theory 1: It's a huge power generator for something, I don't know what that something is but my best guess is that it's for weather manipulation somewhat like HARRP. Something like that is the only thing that they would want to keep quiet and would use that much power. It may or may not use microwaves focussed on the ionosphere to manipulate jet streams. Similarly, HARRP based in Alaska is powered from a huge natural gas deposit. Theroy 2: It could be used to generate loads of antimatter to power something, perhaps we already have starships like in the stargate series and have been venturing offworld with what little we could produce from the smaller colliders that we have in use already. Maybe the ships are getting larger and more is needed. With all the UFO sightings....don't say it's impossible.