From September till November 2019 the CLOUD14 campaign took place at the CERN CLOUD chamber. The campaign mainly focused on the study of the hygroscopicity and the ice nucleation ability of secondary aerosol particles. In this presentation I will focus on: brief description of the CLOUD chamber, overview of the main objectives of the campaign and preliminary results on the ice nucleation ability of secondary inorganic aerosol particles and multicomponent particles (internally mixed organic and inorganic particles).