Explaining the CDF detector
The Fermilab Tevatron provides proton-antiproton collisions at the world's highest energy of 2 trillion electron-volts (TeV) as the collision’s center of mass per particle in the proton and antiproton beams.
To find a top quark event, Higgs particle, or other new physics, we must look at 1 trillion or more events. To achieve these new physics results, we collect data at the rate of
about a million proton-antiproton collisions per second.
The CDF detector is composed of Central, and Forward-Backward sections.
The Central Detector is composed of:
SVXII - Silicon Detector
6 layers of silicon strip detectors, located
at radial distances of 1.35 to 10 centimeters
from the proton and antiproton beams,
to measure position of charged particles
close to the collision point.
With spatial resolution on the order of 10s of
microns, the silicon vertex detectors enable
us to see the decay vertices of b quark,
charm quark, and tau lepton with lifetimes of
10^{-12} or 1 trillionth of a second.
ISL - Intermediate Silicon Layers
3 additional layers of silicon detectors at intermediate radial distances of 20, 22, 28 cm
from collision point provide more precision measurements of the location of the tracks/particles.
COT - Central Outer Tracker
8 superlayers of cells, at radial distances of 40 to 138 centimeters from the beam line.
Each superlayer consists of 12 layers of sense wires. COT provides 96 measurements
for each charged particle track. The curvature of each track, due to the magnetic
field from the surrounding superconducting solenoid magnet, allows us to measure the momentum of each charged particle.
CEM - Central ElectroMagnetic calorimeter
CHA - Central Hadronic calorimeter
After traversing the tracking chambers/detectors, Electrons and photons deposit their energies in the electromagnetic calorimeter Hadrons deposit their energies in both the
electromagnetic calorimeters and the hadronic calorimeter.
CMU - Central Muon detectors
CMP - Central Muon Upgrade detectors
Muons can penetrate lots of material, so they can penetrate the electromagnetic and hadronic calorimeter, and are detected by the CMU muon detectors at the back of the calorimeters. Additional muon detectors are placed behind steel walls which absorb hadronic particles that might have traveled beyond the calorimeters
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