![]() ![]() The energy of the circulating electrons can be steplessly varied in the range of 234 MeV to 742 MeV, then scattered on laser pulses in the optical cavity. The main components of the VEGA system will be an electron storage ring coupled to a Fabry–Pérot optical cavity, providing gains of 5 000–10 000 in laser power, reducing the complexity of the interaction laser drive system similarly as described in the patent of Ref. . and will generate γ rays using the laser Compton backscattering (LCS) technique. The system is being constructed by Lyncean Technologies Inc. The VEGA system under construction for ELI-NP is the source of the γ-ray beam that will be provided to ELIGANT-GN. In this paper we will, however, focus on the ELIGANT Gamma Neutron (ELIGANT-GN) member , of the ELIGANT family, consisting of a large array of several different types of the detectors for studying the properties of photoinduced neutron- and γ-decay for a large variety of nuclei and physics cases. ![]() For example, photoneutron cross-sections will be measured with high precision using the ELIGANT Thermal Neutron (ELIGANT-TN) , setup, while second order nuclear decay processes ,, will be measured using the ELIGANT Gamma Gamma (ELIGANT-GG), setup. One of the flagship experimental programmes that will use the VEGA system is the ELI Gamma Above Neutron Threshold (ELIGANT) family of instruments , which aim to study ( γ, γ ), ( γ, n ), ( γ, γ n ), and ( γ, x n ) reactions for various applications and with different approaches. The facility will consist of two systems for front-line nuclear physics research, a high-power laser system that recently reached 10 PW of power and the Variable Energy Gamma-ray (VEGA) system that will produce a high-brilliance monochromatic γ-ray beam in the energy range up to 20 MeV. ![]() The Extreme Light Infrastructure – Nuclear Physics (ELI-NP) facility ,, , in Măgurele, Romania, is currently in its final stages of implementation. ![]()
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