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The ATLAS Detector

ATLAS is about 45 meters long, more than 25 meters high, and weighs about 7,000 tons. It is about half as big as the Notre Dame Cathedral in Paris and weighs the same as the Eiffel Tower or a hundred 747 jets (empty).

ATLAS Experiment © 2015 CERN

The ATLAS collaboration

Collaborators from the ATLAS experiment, the largest particle detector in the world, are seen in CERN's new building 40. Over 3000 scientists from 38 countries are taking part in the ATLAS experiment alone (as of July 2010).

ATLAS Experiment © 2015 CERN

Higgs -> ZZ floating scale

Animated plots of ATLAS

ATLAS Experiment © 2015 CERN

Event display of a H -> 4mu candidate event

Event display of a H -> 4mu candidate event with m(4l) = 124.1 (125.1) GeV without (with) Z mass constraint. The masses of the lepton pairs are 86.3 GeV and 31.6 GeV. The event was recorded by ATLAS on 10-Jun-2012, 13:24:31 CEST in run number 204769 as event number 71902630. Muon tracks are colored red. The inset on the right-hand side shows a zoom into the tracking detector. The inset on top shows a zoom into the vertex region, indicating that the 4 muons originate from the same primary vertex.

ATLAS Experiment © 2015 CERN

ATLAS 13 TeV Fist Stable Beam Collisions

Display of a proton-proton collision event recorded by ATLAS on 3 June 2015, with the first LHC stable beams at a collision energy of 13 TeV. Tracks reconstructed from hits in the inner tracking detector are shown as arcs curving in the solenoidal magnetic field. The green and yellow bars indicate energy deposits in the liquid argon and scintillating-tile calorimeters, clustered in a structure typical of a di-jet event. The transverse momentum of the jets are about 200 GeV and 170 GeV.

ATLAS Experiment © 2015 CERN

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