Standard Model at the LHC (Lecture 2: Particle Detectors) M. Schott ...
Standard Model at the LHC (Lecture 2: Particle Detectors) M. Schott ...
Standard Model at the LHC (Lecture 2: Particle Detectors) M. Schott ...
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Introduction The <strong>LHC</strong> <strong>Particle</strong>/M<strong>at</strong>ter Interactions Momentum Measurement Energy Measurement <strong>LHC</strong> <strong>Detectors</strong><br />
Hadronic Calorimeters (1/2)<br />
Hadronic calorimeter are designed for <strong>the</strong> energy measurement of<br />
hadrons<br />
Similar principle as electromagentic calorimeters, but showers<br />
are produced via strong interaction<br />
incoming hadrons interact with <strong>at</strong>omic nuclei → n, p, π 0 , π ±<br />
π 0 → γγ: also electromagnetic shower<br />
≈ 20% of energy needed to break up nuclear binding energy<br />
nuclear absorption lengths λ instead of radi<strong>at</strong>ion length X 0<br />
Typical values for λ: λ Fe ≈ 17.1cm, λ Pb ≈ 18.5cm<br />
Typical values for 0 : 0,Fe ≈ 1.76cm, λ 0,Pb ≈ 0.56cm<br />
→ hadronic calorimeters must be much larger
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