Status of ELI-NP and opportunities for hyperfine research
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Status of ELI-NP and opportunities for hyperfine research Dimiter L. Balabanski1 · Paul Constantin1 · Adrian Rotaru2,3 · Alexandru State2,3
© Springer Nature Switzerland AG 2019
Abstract The status of the implementation of the Extreme Light Infrastructure – Nuclear Physics (ELI-NP) facility is reported. The main instruments at ELI-NP will be two 10 PW synchronizable lasers and a high-brilliance gamma beam system. The ELI-NP gamma beams will be produced via Compton back-scattering of laser photons off accelerated electrons. The emerging day-one experimental program is discussed, together with the detector systems which are under construction for its realization. At ELI-NP an IGISOL facility is planned, where beams of exotic nuclei will be produced in photo-fission. This opens the avenue for studies of nuclear structure studies, such as mass measurements, nuclear moments and charge radii. The core of this project is a Cryogenic Stopping Cell (CSC) with an orthogonal extraction with respect to the gamma beam. Keywords Gamma-beam · Photonuclear reactions · Photo-fission · IGISOL · Ion stopping cell
1 Introduction The Extreme Light Infrastructure (ELI) is implemented in three countries, where complimentary laboratories are under construction, i.e. the Czech Republic will specialize in high-energy secondary beams, Hungary in attosecond lasers and Romania in nuclear physics research. The ELI-NP infrastructure [1] was selected by the NuPECC committee as a major facility in the 2017 Nuclear Physics Long Range Plan in Europe [2]. It comprises of two This article is part of the Topical Collection on Proceedings of the International Conference on Hyperfine Interactions and their Applications (HYPERFINE 2019), Goa, India, 10-15 February 2019 Edited by S. N. Mishra, P. L. Paulose and R. Palit Dimiter L. Balabanski
[email protected] 1
Extreme Light Infrastructure-Nuclear Physics, Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, 30 Reactorului Str., 077125 Mˇagurele, Ilfov, Romania
2
Department of Nuclear Physics, Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, 30 Reactorului Str., 077125 Mˇagurele, Ilfov, Romania
3
Doctoral School in Engineering and Applications of Lasers and Accelerators, University Polytechnica of Bucharest, Bucharest, Romania
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components: (i) a very high intensity laser system (HPLS) with two 10 PW laser arms which will produce a laser shot on the target once a minute, and (ii) a very intense, brilliant, almost fully polarized γ beam with spectral density of 104 photons/s/eV, a bandwidth ≥ 0.5%, with γ -ray energies, Eγ , in the range from 200 keV to 19.5 MeV. The HPLS will be able to reach on target intensities of 1023 W/cm2 , corresponding to extreme light pressure of over 1013 bar, and electrical fields of 1015 V/m. In addition, the HPLS has two outputs of 1 PW and two outputs at 100 TW, producing laser pulses with frequency of 1 Hz and 10 Hz, respectively. Each of the outputs is e
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