Dielectron production in heavy ions collisions: the HADES experiment

HADES (High Acceptance Di-Electron Spectrometer) is being built at UNILAC-SIS in Darmstadt with the main purpose of studying the production of dilepton pairs in nucleus-nucleus collisions at energies of 1AGeV. The spectrometer is briefly described, and the responsibilities of the group from the University of Santiago de Compostela are discussed.