Speaker
Description
The Extreme Light Infrastructure – Nuclear Physics (ELI-NP) facility is a major European nuclear physics facility for high-power laser beamlines and a projected high-brilliance γ-ray beams with energy up to 20 MeV and a very narrow bandwidth. The scientific focus of the γ beam system will cover a broad range of topics from nuclear astrophysics to applications to basic science. One of the research directions is the scientific program on photonuclear reactions and nuclear properties in the continuum and quasi-continuum, to be studied via the giant dipole resonance (GDR) and the pygmy dipole resonance (PDR). For this purpose, the ELI Gamma Above Neutron Threshold (ELIGANT) instrumentation has been developed. This suite of instruments consists of a spectroscopic setup with large-volume LaBr$_{3}$:Ce and CeBr$_{3}$ scintillator detectors, liquid scintillators and lithium glass scintillators called ELIGANT-GN [1], and a setup for (γ,n) cross-section measurements for basic science and applications using a moderated neutron counter called ELIGANT-TN [2]. Here we will discuss the instrumentation, commissioning, and some initial results from these instruments in experiments with spontaneous fission sources [3] and (α,n) reaction cross-sections from low-energy particle beams [4].
[1] P.-A. Söderström, et al. Nucl. Instrum. Methods Phys. Res. A, 1027:166171, 2022.
[2] P.-A. Söderström, et al. Nucl. Instrum. Methods Phys. Res. A, 1084:171229, 2026.
[3] D. Choudhury, et al. in manuscript
[4] R. Roy, et al. Phys. Rev. C, 112:044613, 2025; R. Roy, et al., in manuscript
This work was supported by the ELI-RO program funded by the Institute of Atomic Physics, Măgurele, Romania, contract numbers ELI-RO/RDI/2024-002 (CIPHERS), ELI-RO/RDI/2024-007 (ELITE) and the Romanian Ministry of Research and Innovation under research contract PN 23 21 01 06.