Abstract
The status of implementation of the ELI-NP high-power laser system and the high-brilliance gamma beam system is reported. The emerging experimental program at the facility in nuclear physics in astrophysics is discussed, with emphasis of the considered day-one experiments.
Highlights
The Extreme Light Infrastructure Nuclear Physics (ELI-NP) gamma-beam system (GBS) will provide beams in the range between 200 keV and 19.5 MeV with a bandwidth better than 0.5%, spectral density of about 104 photons/(eV·s) and linear polarization higher than 95%
The gamma beam will be produced by inverse Compton scattering of 515 nm green laser light, provided by 100 Hz Yb:YAG lasers, off electron beams accelerated to relativistic energies by a warm linac consisting of S-band photoinjector and C-band acceleration cavities [4]
The electrons will interact with the laser beams at two interaction points, at low and high electron beam energies, producing low (200 keV to 3.5 MeV) and high energy (3 MeV to 19.5 MeV) gamma beams
Summary
The main research tools at Extreme Light Infrastructure Nuclear Physics (ELI-NP) facility are a high-power laser system (HPLS) and a high-brilliance gamma-beam system (GBS) [1]. They are superior to what is available at present in research laboratories worldwide. The HPLS has central wavelength of 815 nm, reaching 10 PW peak power in pulses of duration below 22 fs, with a contrast of 1013:1 at 100 ps and 109:1 at 10 ps ahead of the pulse peak It has two laser arms, operated by a common front-end. In this paper the emerging experimental program in the field of nuclear physics in astrophysics is described, with an emphasis of the considered day-one experiments
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