Calorimeter
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The calorimeter measures the energies of charged and neutral particles. It consists of metal plates (absorbers) and sensing elements. Interactions in the absorbers transform the incident energy into a "shower" of particles that are detected by the sensing elements. |
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In the inner sections of the calorimeter, the sensing element is liquid argon. The showers in the argon liberate electrons that are collected and recorded. |
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In the outer sections, the sensors are tiles of
scintillating plastic. The showers cause the plastic to emit light
which is detected and recorded.
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