Speaker
Description
The high brilliance Variable Energy GAmma (VEGA) System under implementation at Extreme Light Infrastructure - Nuclear Physics (ELI-NP) in Romania, uses a storage ring as an Inverse Compton Scattering (ICS) source. The storage ring is filled by a warm linear accelerator with a maximum energy of 800 MeV. A laser system drives a high-finesse optical cavity to resonantly build-up pulsed laser power. Mono-energetic gamma-ray beams are produced via Compton backscattering of laser pulses off the relativistic electron beam in the storage ring. The high-brilliance narrow-bandwidth γ-ray beam will be delivered with energies up to 19.5 MeV, a spectral density higher than 5×10$^3$ photons/s/eV, bandwidth of 0.5%, and linear polarization higher than 95%. The VEGA LINAC installation is foressen to be finalized in 2024. Details of the status of the storage ring, interaction laser system, and challenges for completing the system will be highlighted.
We present the status of the VEGA System at ELI-NP and also its place among other laser-Compton scattering (LCS) sources of monoenergetic γ-ray beams which are operational around the world. The discussion will also emphasize ELI-NP efforts to develop diagnostics instruments and metrological procedures for measuring the VEGA system γ-ray beam parameters.
This work was carried out in part under the contract PN 23 21 01 06 sponsored by the Romanian Ministry of Research, Innovation and Digitalization.
