An overview of the CERN NA62 Experiment with emphasis on Tracking.

The rare decay K+ → π+ ν ν, with a branching fraction predicted by the SM to be (9 ± 1) 10-11, enables a search for potential new physics at energy scales up to 100 TeV. The fixed target experiment NA62 at the CERN SPS will collect ~100 events before the 2018 shutdown, with background predicted to be at the level of 10%. Two detectors are involved in the 4-momentum measurements of the beam and charged decay particles, which are essential to the kinematical background reduction. The first is a silicon spectrometer of size 27x60 mm2 and pixel size 300x300 µm2, which is able to sustain a particle rate of 1.3 MHz/mm2 (total rate 800MHz). The second is a straw-tube spectrometer of a diameter of 2.1 m with 4 stations extending over 40m, each of which is equipped with X, Y, U and V planes. Both systems operate in vacuum at a pressure of 10-6 mbar. The seminar will focus on a description of the NA62 apparatus with emphasis on these tracking systems.