D0 experiment
The D0 detector (often written as DØ to make it clear that it is the number zero and not the letter O) is one of two large detectors at the Tevatron particle accelerator that operated at the Fermi National Accelerator Laboratory (Fermilab) has been. The detector examined the products created when protons and antiprotons collide , i.e. hadrons , leptons and photons .
Inside the detector there is a tracking system consisting of a silicon tracker and a toroidal magnet for pulse determination. The second layer is a calorimeter with liquid argon and uranium as absorber material. The outermost layer consists of a system of drift chambers for the detection of muons . With the help of a magnet system, a magnetic field of 2 Tesla strength is generated to determine the impulse. The detector is complemented by a luminosity system for determining the collision rate and a proton detector in the forward direction (Forward Proton Detector) for examining elastic collisions.
A distinction was made between two operating phases: Run I from 1994 to 1996 and Run II from 2001 until the Tevatron was switched off on September 30, 2011. In 1995, the top quark was discovered together with the CDF collaboration at the same laboratory .