ATLAS Detector Layers:
Inner Detector — Pixel · SCT · TRT
EM Calorimeter (e±, γ shower)
Hadronic Calorimeter (π, K shower)
Muon Spectrometer (μ penetrates all)
Barrel Toroid Magnets (8 coils, ~1 T)
MET arrow — missing ET from ν
Active particles: 0
Solenoid: 2 T | Toroid: ~1 T
√s: 14 TeV | Depth: 100 m underground