ATLAS is a particle physics experiment at the Large Hadron Collider (LHC) that is exploring the fundamental nature of matter and the basic forces that shape our universe. End of 2009 LHC started to collide protons on protons and the search for new physics has begun.
The LHC had so far a very successfully 7 TeV proton-proton 2011 run and delivered more than 2fb-1 of data by end of August 2011. Major results of measurements and searches performed by ATLAS with this data were presented at EPSHEP 2011 and http://www.tifr.res.in/~lp11/ .
More information about ATLAS
Official ATLAS Website
A collision event from the first 2011 fill with stable beams, which were declared at 18:04 on Sunday 13 March.