From implementation to operation and the first measurements with the ELIGANT detectors from ELI-NP

. - The ELIGANT set of instruments is a dedicated tool being developed at ELI-NP for studying high-energy collective nuclear excitations using gamma beams. The topics of interest in these studies range from fundamental nuclear structure properties of the Giant Dipole Resonance and the low-energy strength enhancement in the Pygmy Dipole Resonance region, to applications in p-process nucleosynthesis and propagation of Ultra-High Energy Cosmic Rays. The equipment consists of large-volume LaBr3:Ce and CeBr3 detectors for high-energy gamma-rays, liquid scintillators and lithium glass scintillators for high-and low-energy neutron time-of-flight, and a proportional counter system of 3He tubes for cross-section measurements. These instruments have been installed and commissioned with sources and via in beam measurements, in different configurations, at the IFIN-HH Tandem/Tandetron accelerators with terminal voltages of 3 MV and 9 MV. This contribution gives an overview of the present and future activities with ELIGANT.