NA62 is a particle physics experiment that investigates new physics at CERN SPS accelerator. The aim of this experiment is to measure the kaon decay 𝑘+ → 𝜋+𝜈𝜈̅ in order to compare the experimental data with the Standard Model theory. Time, direction, and momentum of the incoming kaon beam are accurately recorded by the GTK spectrometer. The GTK is located into a vacuum chamber and a very low material budget is required to minimize beam interactions. The readout electronics dissipate a lot of thermal power that must be managed by an efficient cooling system in order to keep the temperature of the silicon pixel tracking detectors below 5°C.