Status of the GERDA experiment

The GERDA experiment is designed to search for neutrinoless double beta decay (0νββ) using76Ge, therefore asses the nature of neutrinos (Dirac or Majorana). In the so-called Phase I, with an exposure of 21.6kr yr, GERDA reached a background index (BI) of 10−2 cts/(keV kg yr) at 90% CL No signal was found during this phase and a lower limit on the process half-life of 2.1 × 1025 yr was derived (90% CL). GERDA is currently being upgraded to its Phase II, where the 76Ge mass will be double, and it is expected to reduce by an order of magnitude the BI. For 0νββ half-lives at the order of 1026 yr will be derived in the absence of signal. The experimental techniques used by GERDA will be depicted and the most relevant results from Phase I will be shown; as well as details on the upgrades of Phase II, including the status of the additional detectors deployed recently, and the new background reduction techniques using the active liquid Argon veto