The trajectories of the particles (muons, pions, and electrons) in the MICE apparatus are detected by time-of-flight counters (TOF), Cerenkov detectors, KL (KLOE light) detector, EMR (Electron-Muon Ranger) and trackers. The trackers are multi-wire grids placed in the bore of a solenoidal magnetic field (up to 4 Tesla). The field twists the tracks into spirals to give a more precise determination of the trajectories. There is one tracker for incoming particles, and one tracker for outgoing scattered particles.
The flux of particles is low enough so that individual particles can be followed through the apparatus. Therefore, the effect of the scattering medium can be studied on a particle-by-particle basis and compared with detailed computer simulations. Particle identification (is it a muon, pion, or electron?) is achieved by TOF, Cerenkov, KL, and EMR.
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