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Zernike-coefficient extraction via helical beam reconstruction for optimization(ZEHBRO) in the far field

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High Power Laser Science and Engineering 2023年第6期11卷 213-222页

作者： J.B.Ohland D.Posor U.Eisenbarth V.Iancu R.Ungureanu D.Ursescu V.Bagnoud GSI Helmholtzzentrum für Schwerionenforschung DarmstadtGermany Institut für angewandte Physik Technische Universität DarmstadtDarmstadtGermany Helmholtz-Institut Jena JenaGermany ELI-NP Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering(IFIN-HH)M agureleIlfovRomania Faculty of physics University of BucharestM agureleIlfovRomania Center for Advanced Laser Technologies(CETAL) National Institute for LaserPlasma and Radiation Physics(INFLPR)M agureleIlfovRomania

The spatial distribution of beams with orbital angular momentum in the far field is known to be extremely sensitive to angular aberrations,such as astigmatism,coma and *** poses a challenge for conventional beam optimization strategies when a homogeneous ring intensity is required for an *** developed a novel approach for estimating the Zernike coefficients of low-order angular aberrations in the near field based solely on the analysis of the ring deformations in the far field.A fast,iterative reconstruction of the focal ring recreates the deformations and provides insight into the wavefront deformations in the near field without relying on conventional phase retrieval *** output of our algorithm can be used to optimize the focal ring,as demonstrated experimentally at the 100 TW beamline at the extreme light infrastructure-nuclear physics facility.

关键词： beam quality far field orbital angular momentum ring intensity phase retrieval wavefront

High-energy hybrid femtosecond laser system demonstrating 2×10 PW capability

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High Power Laser Science and Engineering 2020年第4期8卷 104-118页

作者： François Lureau Guillaume Matras Olivier Chalus Christophe Derycke Thomas Morbieu Christophe Radier Olivier Casagrande Sébastien Laux Sandrine Ricaud Gilles Rey Alain Pellegrina Caroline Richard Laurent Boudjemaa Christophe Simon-Boisson Andrei Baleanu Romeo Banici Andrei Gradinariu Constantin Caldararu Bertrand De Boisdeffre Petru Ghenuche Andrei Naziru Georgios Kolliopoulos Liviu Neagu Razvan Dabu Ioan Dancus Daniel Ursescu Thales LAS France 78990 ElancourtFrance Thales Systems Romania 060071 BucurestiRomania extreme light infrastructure-nuclear physics ‘Horia Hulubei’National Institute for Physics and Nuclear Engineering077125 Bucharest MagureleRomania University of Bucharest Faculty of Physics077125 Bucharest MagureleRomania

We report on a two-arm hybrid high-power laser system(HPLS)able to deliver 2×10 PW femtosecond pulses,developed at the Bucharest-Magurele extreme light infrastructure nuclear physics(ELI-NP)Facility.A hybrid frontend(FE)based on a Ti:sapphire chirped pulse amplifier and a picosecond optical parametric chirped pulse amplifier based on beta barium borate(BBO)crystals,with a cross-polarized wave(XPW)filter in between,has been *** delivers 10 mJ laser pulses,at 10 Hz repetition rate,with more than 70 nm spectral bandwidth and high-intensity contrast,in the range of 1013:*** high-energy Ti:sapphire amplifier stages of both arms were seeded from this common *** final high-energy amplifier,equipped with a 200 mm diameter Ti:sapphire crystal,has been pumped by six 100 J nanosecond frequency doubled Nd:glass lasers,at 1 pulse/min repetition *** than 300 J output pulse energy has been obtained by pumping with only 80%of the whole 600 J available pump *** compressor has a transmission efficiency of 74%and an output pulse duration of 22.7 fs was measured,thus demonstrating that the dual-arm HPLS has the capacity to generate 10 PW peak power femtosecond *** reported results represent the cornerstone of the ELI-NP 2×10 PW femtosecond laser facility,devoted to fundamental and applied nuclear physics research.

关键词： lasers high-power laser pulses ultra-short laser pulses

Characterization of the stability and dynamics of a laser-produced plasma expanding across a strong magnetic field

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Matter and Radiation at extremes 2022年第2期7卷 53-61页

作者： Weipeng Yao Julien Capitaine Benjamin Khiar Tommaso Vinci Konstantin Burdonov Jérôme Béard Julien Fuchs Andrea Ciardi LULI–CNRS CEASorbonne UniversitéEcole PolytechniqueInstitut Polytechnique de ParisF-91128 Palaiseau cedexFrance Sorbonne Université Observatoire de ParisUniversitéPSLCNRSLERMAF-75005 ParisFrance Office National d’Etudes et de Recherches Aérospatiales(ONERA) F-91123 PalaiseauFrance IAP Russian Academy of Sciences603950 Nizhny NovgorodRussia LNCMI UPR 3228CNRS-UGA-UPS-INSAF-31400 ToulouseFrance

Magnetized laser-produced plasmas are central to many studies in laboratory astrophysics,in inertial confinement fusion,and in industrial ***,we present the results of large-scale three-dimensional magnetohydrodynamic simulations of the dynamics of a laser-produced plasma expanding into a transverse magnetic field with a strength of tens of *** simulations show the plasma being confined by the strong magnetic field into a slender slab structured by the magnetized Rayleigh–Taylor instability that develops at the plasma–vacuum *** find that when the initial velocity of the plume is perturbed,the slab can develop kink-like motions that disrupt its propagation.

关键词： expanding dynamics magnetic

A data-based photonuclear simulation algorithm for determining specific activity of medical radioisotopes

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nuclear Science and Techniques 2016年第5期27卷 160-167页

作者： Wen Luo Dimiter L.Balabanski Dan Filipescu School of nuclear Science and Technology University of South ChinaHengyang 421001China extreme light infrastructure-nuclear physics(ELI-NP)/"Horia Hulubei"National Institute for R&D in physics and nuclear Engineering(IFIN-HH) 30 Reactorului St.Bucharest-Magurelejud.IlfovP.O.B.MG-6077125 IasiRomania

For simulating more accurately neutron or proton production from photonuclear reactions,a data-based photonuclear reaction simulation algorithm has been *** photonuclear cross sections from evaluated or experimental database are chosen as input *** checking the validity of the use of the data-based photonuclear algorithm,benchmarking simulations are presented in *** calculate photonuclear cross sections or reaction yield for ~9Be,^(48)Ti,^(133)Cs,and ^(197)Au and compare them with experimental data in the region of incident photon energy below ~30 *** Geant4 can hardly reproduce photonuclear experimental data,results obtained from the data-based photonuclear algorithm are found in good agreement with experimental *** application in estimation of specific activity of radioisotopes is further *** conclude that the developed data-based photonuclear algorithm is suitable for an accurate prediction of photoninduced neutron or proton productions.

关键词：放射性同位素模拟算法医用光核反应实验数据 Geant4 光子能量输入数据

Production of medical radioisotope ^(64)Cu by photoneutron reaction using ELI-NP γ-ray beam

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nuclear Science and Techniques 2016年第4期27卷 147-151页

作者： Wen Luo School of nuclear Science and Technology University of South China extreme light infrastructure - nuclear physics (ELI-NP)/‘‘Horia Hulubei’’ National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH)

Copper-64 is a radioisotope of medical interest that could be used for positron emission tomography imaging and targeted radiotherapy of cancer. In this work,we investigated the possibility of producing the^(64)Cu isotope through a^(65)Cu(γ,n) reaction using high-intensity γ-beams produced at the extreme light infrastructurenuclear physics facility(ELI-NP). The specific activity for^(64)Cu was obtained as a function of target geometry, irradiation time, and electron beam energy, which translates into γ-beam energy. Optimized conditions for the generation of^(64)Cu isotopes at the ELI-NP were discussed. We estimated that an achievable saturation specific activity is of the order of 1–2 m Ci/g for thin targets(radius 1–2 mm,thickness 1 cm) and for a γ-beam flux of 10^(11) s ~1. Based on these results, the ELI-NP could provide great potential for the production of some innovative radioisotopes of medical interest in sufficient quantities suitable for nuclear medicine research.

关键词：放射性同位素设施生产中子反应射线束正电子发射断层成像医用靶向治疗基础设施

High-energy hybrid femtosecond laser system demonstrating 2 × 10 PW capability

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High Power Laser Science and Engineering 2020年第4期8卷 108-122页

作者： Fran?ois Lureau Guillaume Matras Olivier Chalus Christophe Derycke Thomas Morbieu Christophe Radier Olivier Casagrande Sébastien Laux Sandrine Ricaud Gilles Rey Alain Pellegrina Caroline Richard Laurent Boudjemaa Christophe Simon-Boisson Andrei Baleanu Romeo Banici Andrei Gradinariu Constantin Caldararu Bertrand De Boisdeffre Petru Ghenuche Andrei Naziru Georgios Kolliopoulos Liviu Neagu Razvan Dabu Ioan Dancus Daniel Ursescu Thales LAS France Thales Systems Romania extreme light infrastructure – nuclear physics ‘Horia Hulubei' National Institute for Physics and Nuclear Engineering University of Bucharest Faculty of Physics

We report on a two-arm hybrid high-power laser system(HPLS) able to deliver 2 × 10 PW femtosecond pulses,developed at the Bucharest-Magurele extreme light infrastructure nuclear physics(ELI-NP) Facility. A hybrid frontend(FE) based on a Ti:sapphire chirped pulse amplifier and a picosecond optical parametric chirped pulse amplifier based on beta barium borate(BBO) crystals, with a cross-polarized wave(XPW) filter in between, has been *** delivers 10 mJ laser pulses, at 10 Hz repetition rate, with more than 70 nm spectral bandwidth and high-intensity contrast, in the range of 1013:1. The high-energy Ti:sapphire amplifier stages of both arms were seeded from this common FE. The final high-energy amplifier, equipped with a 200 mm diameter Ti:sapphire crystal, has been pumped by six 100 J nanosecond frequency doubled Nd:glass lasers, at 1 pulse/min repetition rate. More than 300 J output pulse energy has been obtained by pumping with only 80% of the whole 600 J available pump energy. The compressor has a transmission efficiency of 74% and an output pulse duration of 22.7 fs was measured, thus demonstrating that the dual-arm HPLS has the capacity to generate 10 PW peak power femtosecond pulses. The reported results represent the cornerstone of the ELI-NP 2 × 10 PW femtosecond laser facility, devoted to fundamental and applied nuclear physics research.

关键词：

Current status and highlights of the ELI-NP research program

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Matter and Radiation at extremes 2020年第2期5卷 2-25页

作者： K.A.Tanaka K.M.Spohr D.L.Balabanski S.Balascuta L.Capponi M.O.Cernaianu M.Cuciuc A.Cucoanes I.Dancus A.Dhal B.Diaconescu D.Doria P.Ghenuche D.G.Ghita S.Kisyov V.Nastasa J.F.Ong F.Rotaru D.Sangwan P.-A.Soderstrom D.Stutman G.Suliman O.Tesileanu L.Tudor N.Tsoneva C.A.Ur D.Ursescu N.V.Zamfir extreme light infrastructure(ELI-NP)and Horia Hulubei National Institute for R&Din physics and nuclear Engineering(IFIN-HH) Str.Reactorului No.30077125 Bucharest–M˘agureleRomania Johns Hopkins University 3400 N.Charles StreetBaltimoreMaryland 21218USA

The emergence of a new era reaching beyond current state-of-the-art ultrashort and ultraintense laser technology has been enabled by the approval of around V 850 million worth of structural funds in 2011–2012 by the European Commission for the installation of extreme light infrastructure(ELI).The ELI project consists of three pillars being built in the Czech Republic,Hungary,and *** challenging proposal is based on recent technical progress allowing ultraintense laser fields in which intensities will soon be reaching as high as I0∼1023Wcm−*** tremendous technological advance has been brought about by the invention of chirped pulse amplification by Mourou and *** is hosting the ELI for nuclear physics(ELI-NP)pillar in M˘agurele near *** new facility,currently under construction,is intended to serve the broad national,European,and international scientific *** mission covers scientific research at the frontier of knowledge involving two *** first is laser-driven experiments related to NP,strong-field quantum electrodynamics,and associated vacuum *** second research domain is based on the establishment of a Compton-backscattering-based,high-brilliance,and intenseγbeam with Eγ≲19.5 MeV,which represents a merger between laser and accelerator *** system will allow the investigation of the nuclear structure of selected isotopes and nuclear reactions of relevance,for example,to astrophysics with hitherto unprecedented resolution and *** addition to fundamental themes,a large number of applications with significant societal impact will be *** implementation of the project started in January 2013 and is spearheaded by the ELI-NP/Horia Hulubei National Institute for physics and nuclear Engineering(IFIN-HH).Experiments will begin in early 2020.

关键词： intense frontier approval

High-flux electron beams from laser wakefield accelerators driven by petawatt lasers

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Plasma Science and Technology 2017年第7期19卷 7-11页

作者：曾明 Ovidiu TESILEANU extreme light infrastructure-nuclear physics Horia Hulubei National Institute for Physics and Nuclear Engineering

Laser wakefield accelerators （LWFAs） are considered to be one of the most compeuuve next- generation accelerator candidates. In this paper, we will study the potential high-flux electron beam production of an LWFA driven by petawatt-level laser pulses. In our three-dimensional particle-in-cell simulations, an optimal set of parameters gives -40 nC of charge with 2 PW laser power, thus -400 kA of instantaneous current if we assume the electron beam duration is 100 fs. This high flux and its secondary radiation are widely applicable in nuclear and QED physics, industrial imaging, medical and biological studies.

关键词： laser accelerator petawatt laser high-flux electron beam

Detailed characterization of a laboratory magnetized supercritical collisionless shock and of the associated proton energization

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Matter and Radiation at extremes 2022年第1期7卷 15-28页

作者： W.Yao A.Fazzini S.N.Chen K.Burdonov P.Antici J.B´eard S.Bolaños A.Ciardi R.Diab E.D.Filippov S.Kisyov V.Lelasseux M.Miceli Q.Moreno V.Nastasa S.Orlando S.Pikuz D.C.Popescu G.Revet X.Ribeyre E.d’Humi`eres J.Fuchs LULI–CNRS CEAUPMC Univ Paris 06:Sorbonne Universit´eEcole PolytechniqueInstitut Polytechnique de ParisF-91128 Palaiseau CedexFrance Sorbonne Universit´e Observatoire de ParisUniversit´e PSLCNRSLERMAF-75005 ParisFrance ELI-NP “Horia Hulubei”National Institute for Physics and Nuclear Engineering30 Reactorului StreetRO-077125 Bucharest-MagureleRomania IAP Russian Academy of Sciences603155 Nizhny NovgorodRussia INRS-EMT 1650 Blvd.Lionel-BouletVarennesQuebec J3X 1S2Canada LNCMI UPR 3228CNRS-UGA-UPS-INSAF-31400 ToulouseFrance JIHT Russian Academy of Sciences125412 MoscowRussia Universit`a degli Studi di Palermo Dipartimento di Fisica e Chimica E.Segr`ePiazza del Parlamento 190134 PalermoItaly INAF–Osservatorio Astronomico di Palermo PalermoItaly University of Bordeaux Centre Lasers Intenses et ApplicationsCNRSCEAUMR 5107F-33405 TalenceFrance ELI-Beamlines Institute of PhysicsCzech Academy of Sciences5 Kvetna 83525241 Dolni BrezanyCzech Republic NRNU MEPhI 115409 MoscowRussia

Collisionless shocks are ubiquitous in the Universe and are held responsible for the production of nonthermal particles and high-energy *** the absence of particle collisions in the system,theory shows that the interaction of an expanding plasma with a pre-existing electromagnetic structure(as in our case)is able to induce energy dissipation and allow shock *** formation can alternatively take place when two plasmas interact,through microscopic instabilities inducing electromagnetic fields that are able in turn to mediate energy dissipation and shock *** our platform in which we couple a rapidly expanding plasma induced by high-power lasers(JLF/Titan at LLNL and LULI2000)with high-strength magnetic fields,we have investigated the generation of a magnetized collisionless shock and the associated particle *** have characterized the shock as being collisionless and *** report here on measurements of the plasma density and temperature,the electromagnetic field structures,and the particle energization in the experiments,under various conditions of ambient plasma and magnetic *** have also modeled the formation of the shocks using macroscopic hydrodynamic simulations and the associated particle acceleration using kinetic particle-in-cell *** a companion paper to Yao et al.[***.17,1177–1182(2021)],here we show additional results of the experiments and simulations,providing more information to allow their reproduction and to demonstrate the robustness of our interpretation of the proton energization mechanism as being shock surfing acceleration.

关键词： field collision shock