The NA62 experiment at CERN.

The rare decays K+→ π+νν are excellent processes to make tests of new physics at the highest scale complementary to LHC thanks to their theoretically cleanliness. The NA62 experiment at CERN SPS aims to collect about 100 of such events in two years of data taking, keeping the background at the level of 10%. The physics motivation, experimental technique and the status of the construction of the experiment will be presented.