Structure and Function of the ATLAS Detector

Here, you will get acquainted with the structure of the ATLAS detector and how particles – products of collisions of protons – interact with the detector material and leave footprints. You can decide whether you want to learn this with the help of videos or texts.

ATLAS stands for A Toroidal LHC ApparatuS, due to large toroidal magnets surrounding most of the detector. In the middle of ATLAS, two particle bunches (each with 100 billion protons) collide with each other after they have been accelerated in opposite directions in the LHC. In a head-on collision between two protons, new particles are formed. From information the detectors collect from these collisions – so called “events”, physicists are able to say which physical processes took place. They can only do this when they have understood the detector and its function. So let's look at these points now.

ATLAS via Video

ATLAS via Text and Picture

In the following picture gallery, you'll find a short description of the structure and function of each part of the detector.