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Schmitz B, Metternich M, Boine-Frankenheim O. Automated reconstruction of the initial distribution of laser accelerated ion beams from radiochromic film (RCF) stacks. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2022; 93:093306. [PMID: 36182524 DOI: 10.1063/5.0094105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 08/25/2022] [Indexed: 06/16/2023]
Abstract
Radiochromic film (RCF) stacks are the most commonly used diagnostic of laser accelerated ion beams at Gesellschaft für Schwerionenforschung, Darmstadt (GSI) and at other laboratories. So far, the evaluation of the stacks is performed using manual input for the deposited energy determination. This is usually a tedious task and introduces uncertainty in the resulting ion energy spectrum and also in the corresponding angular distribution. An automated procedure is especially important if larger data sets, containing multiple laser shots, are investigated. Here, we describe an automated procedure for the evaluation of digitized RCF stacks. RCF stacks obtained at GSI's PHELIX laser system are evaluated as a test case. A validation of parts of the procedure is performed on generated input data.
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Affiliation(s)
- Benedikt Schmitz
- Technische Universität Darmstadt, Institut für Teilchenbeschleunigung und Elektromagnetische Felder (TEMF), Schlossgartenstr. 8, 64289 Darmstadt, Germany
| | - Martin Metternich
- Technische Universität Darmstadt, Institut für Kernphysik (IKP), Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - Oliver Boine-Frankenheim
- Technische Universität Darmstadt, Institut für Teilchenbeschleunigung und Elektromagnetische Felder (TEMF), Schlossgartenstr. 8, 64289 Darmstadt, Germany
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2
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Wang T, Arefiev A. Comment on "Creation of Electron-Positron Pairs in Photon-Photon Collisions Driven by 10-PW Laser Pulses". PHYSICAL REVIEW LETTERS 2020; 125:079501. [PMID: 32857577 DOI: 10.1103/physrevlett.125.079501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 05/15/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Affiliation(s)
- Tao Wang
- University of California-San Diego, La Jolla, California 92093, USA
| | - Alexey Arefiev
- University of California-San Diego, La Jolla, California 92093, USA
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3
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Yu JQ, Lu HY, Takahashi T, Hu RH, Gong Z, Ma WJ, Huang YS, Chen CE, Yan XQ. Creation of Electron-Positron Pairs in Photon-Photon Collisions Driven by 10-PW Laser Pulses. PHYSICAL REVIEW LETTERS 2019; 122:014802. [PMID: 31012720 DOI: 10.1103/physrevlett.122.014802] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Indexed: 06/09/2023]
Abstract
A novel approach is proposed to demonstrate the two-photon Breit-Wheeler process by using collimated and wide-bandwidth γ-ray pulses driven by 10-PW lasers. Theoretical calculations suggest that more than 3.2×10^{8} electron-positron pairs with a divergence angle of 7° can be created per shot, and the signal-to-noise ratio is higher than 10^{3}. The positron signal, which is roughly 100 times higher than the detection limit, can be measured by using the existing spectrometers. This approach, which could demonstrate the e^{-}e^{+} pair creation process from two photons, would provide important tests for two-photon physics and other fundamental physical theories.
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Affiliation(s)
- J Q Yu
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - H Y Lu
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
| | - T Takahashi
- AdSM Hiroshima University, 1-3-1 Kagamiyama, Higashi Hiroshima, Hiroshima 739-8530, Japan
| | - R H Hu
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - Z Gong
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - W J Ma
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - Y S Huang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- State Key Laboratory of Particle Detection and Electronics (Institute of High Energy Physics, CAS), Beijing 100049, China
| | - C E Chen
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - X Q Yan
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
- Shenzhen Research Institute of Peking University, Shenzhen 518055, China
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4
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Singh S, Versaci R, Laso Garcia A, Morejon L, Ferrari A, Molodtsova M, Schwengner R, Kumar D, Cowan T. Compact high energy x-ray spectrometer based on forward Compton scattering for high intensity laser plasma experiments. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2018; 89:085118. [PMID: 30184659 DOI: 10.1063/1.5040979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 08/07/2018] [Indexed: 06/08/2023]
Abstract
This article describes the design and presents recent results from testing and calibration of a forward Compton scattering high energy X-ray spectrometer. The calibration was performed using a bremsstrahlung source on the photon scattering facility at the γ Electron linac for beams with high brilliance and low emittance accelerator at Helmholtz-Zentrum Dresden-Rossendorf, which provides high energy X-ray photons with energies up to 18 MeV. The calibration was conducted at different bremsstrahlung end point energies-10.5, 13, 15, and 18 MeV. Experimental spectra show a systematic increase in the maximum energy, photon temperature, and flux. The spectrometer is effective for an energy range of 4-20 MeV with 20%-30% energy resolution. The spectrometer operates in low vacuum with pressure less than 0.1 mbar. Experimental tests showed that operating such a spectrometer in air causes a spuriously enhanced high energy signal due to Compton scattering of photons within air. The article also describes the design and shielding considerations which helped to achieve a dynamic range greater than 30 with this spectrometer. The comparison between the experimental results and Monte Carlo simulations are also presented.
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Affiliation(s)
- S Singh
- ELI Beamlines, Institute of Physics of the ASCR, Dolni Brezany, Czech Republic
| | - R Versaci
- ELI Beamlines, Institute of Physics of the ASCR, Dolni Brezany, Czech Republic
| | - A Laso Garcia
- Institute for Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - L Morejon
- ELI Beamlines, Institute of Physics of the ASCR, Dolni Brezany, Czech Republic
| | - A Ferrari
- Institute for Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - M Molodtsova
- Institute for Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - R Schwengner
- Institute for Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - D Kumar
- ELI Beamlines, Institute of Physics of the ASCR, Dolni Brezany, Czech Republic
| | - T Cowan
- Institute for Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
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5
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Capdessus R, King M, Del Sorbo D, Duff M, Ridgers CP, McKenna P. Relativistic Doppler-boosted γ-rays in High Fields. Sci Rep 2018; 8:9155. [PMID: 29904181 PMCID: PMC6002516 DOI: 10.1038/s41598-018-27122-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 05/24/2018] [Indexed: 12/05/2022] Open
Abstract
The relativistic Doppler effect is one of the most famous implications of the principles of special relativity and is intrinsic to moving radiation sources, relativistic optics and many astrophysical phenomena. It occurs in the case of a plasma sail accelerated to relativistic velocities by an external driver, such as an ultra-intense laser pulse. Here we show that the relativistic Doppler effect on the high energy synchrotron photon emission (~10 MeV), strongly depends on two intrinsic properties of the plasma (charge state and ion mass) and the transverse extent of the driver. When the moving plasma becomes relativistically transparent to the driver, we show that the γ-ray emission is Doppler-boosted and the angular emission decreases; optimal for the highest charge-to-mass ratio ion species (i.e. a hydrogen plasma). This provides new fundamental insight into the generation of γ-rays in extreme conditions and informs related experiments using multi-petawatt laser facilities.
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Affiliation(s)
- Remi Capdessus
- SUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
| | - Martin King
- SUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK
| | - Dario Del Sorbo
- York Plasma Institute, Department of Physics, University of York, York, YO10 5DQ, UK
| | - Matthew Duff
- SUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK
| | - Christopher P Ridgers
- York Plasma Institute, Department of Physics, University of York, York, YO10 5DQ, UK
| | - Paul McKenna
- SUPA Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK.
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6
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Niel F, Riconda C, Amiranoff F, Duclous R, Grech M. From quantum to classical modeling of radiation reaction: A focus on stochasticity effects. Phys Rev E 2018; 97:043209. [PMID: 29758698 DOI: 10.1103/physreve.97.043209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Indexed: 06/08/2023]
Abstract
Radiation reaction in the interaction of ultrarelativistic electrons with a strong external electromagnetic field is investigated using a kinetic approach in the nonlinear moderately quantum regime. Three complementary descriptions are discussed considering arbitrary geometries of interaction: a deterministic one relying on the quantum-corrected radiation reaction force in the Landau and Lifschitz (LL) form, a linear Boltzmann equation for the electron distribution function, and a Fokker-Planck (FP) expansion in the limit where the emitted photon energies are small with respect to that of the emitting electrons. The latter description is equivalent to a stochastic differential equation where the effect of the radiation reaction appears in the form of the deterministic term corresponding to the quantum-corrected LL friction force, and by a diffusion term accounting for the stochastic nature of photon emission. By studying the evolution of the energy moments of the electron distribution function with the three models, we are able to show that all three descriptions provide similar predictions on the temporal evolution of the average energy of an electron population in various physical situations of interest, even for large values of the quantum parameter χ. The FP and full linear Boltzmann descriptions also allow us to correctly describe the evolution of the energy variance (second-order moment) of the distribution function, while higher-order moments are in general correctly captured with the full linear Boltzmann description only. A general criterion for the limit of validity of each description is proposed, as well as a numerical scheme for the inclusion of the FP description in particle-in-cell codes. This work, not limited to the configuration of a monoenergetic electron beam colliding with a laser pulse, allows further insight into the relative importance of various effects of radiation reaction and in particular of the discrete and stochastic nature of high-energy photon emission and its back-reaction in the deformation of the particle distribution function.
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Affiliation(s)
- F Niel
- LULI, UPMC Université Paris 06: Sorbonne Universités, CNRS, École Polytechnique, CEA, Université Paris-Saclay, F-75252 Paris cedex 05, France
| | - C Riconda
- LULI, UPMC Université Paris 06: Sorbonne Universités, CNRS, École Polytechnique, CEA, Université Paris-Saclay, F-75252 Paris cedex 05, France
| | - F Amiranoff
- LULI, UPMC Université Paris 06: Sorbonne Universités, CNRS, École Polytechnique, CEA, Université Paris-Saclay, F-75252 Paris cedex 05, France
| | - R Duclous
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - M Grech
- LULI, CNRS, École Polytechnique, CEA, Université Paris-Saclay, UPMC Université Paris 06: Sorbonne Universités, F-91128 Palaiseau cedex, France
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7
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Ribeyre X, d'Humières E, Jansen O, Jequier S, Tikhonchuk VT, Lobet M. Pair creation in collision of γ-ray beams produced with high-intensity lasers. Phys Rev E 2016; 93:013201. [PMID: 26871177 DOI: 10.1103/physreve.93.013201] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Indexed: 06/05/2023]
Abstract
Direct production of electron-positron pairs in two-photon collisions, the Breit-Wheeler process, is one of the basic processes in the universe. However, it has never been directly observed in the laboratory because of the absence of the intense γ-ray sources. Laser-induced synchrotron sources emission may open a way to observe this process. The feasibility of an experimental setup using a MeV photon source is studied in this paper. We compare several γ-ray sources and estimate the expected number of electron-positron pairs and competing processes by using numerical simulations including quantum electrodynamic effects.
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Affiliation(s)
- X Ribeyre
- Univ. Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications, UMR 5107, 33405 Talence, France
| | - E d'Humières
- Univ. Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications, UMR 5107, 33405 Talence, France
| | - O Jansen
- Univ. Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications, UMR 5107, 33405 Talence, France
| | - S Jequier
- Univ. Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications, UMR 5107, 33405 Talence, France
| | - V T Tikhonchuk
- Univ. Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications, UMR 5107, 33405 Talence, France
| | - M Lobet
- Univ. Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications, UMR 5107, 33405 Talence, France and CEA, DAM, DIF, F-91297, Arpajon, France
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8
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Capdessus R, McKenna P. Influence of radiation reaction force on ultraintense laser-driven ion acceleration. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 91:053105. [PMID: 26066270 DOI: 10.1103/physreve.91.053105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Indexed: 06/04/2023]
Abstract
The role of the radiation reaction force in ultraintense laser-driven ion acceleration is investigated. For laser intensities ∼10(23)W/cm(2), the action of this force on electrons is demonstrated in relativistic particle-in-cell simulations to significantly enhance the energy transfer to ions in relativistically transparent targets, but strongly reduce the ion energy in dense plasma targets. An expression is derived for the revised piston velocity, and hence ion energy, taking account of energy loses to synchrotron radiation generated by electrons accelerated in the laser field. Ion mass is demonstrated to be important by comparing results obtained with proton and deuteron plasma. The results can be verified in experiments with cryogenic hydrogen and deuterium targets.
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Affiliation(s)
- R Capdessus
- Department of Physics SUPA, University of Strathclyde, Glasgow G4 0NG, United Kingdom
| | - P McKenna
- Department of Physics SUPA, University of Strathclyde, Glasgow G4 0NG, United Kingdom
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9
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Li JX, Hatsagortsyan KZ, Keitel CH. Robust signatures of quantum radiation reaction in focused ultrashort laser pulses. PHYSICAL REVIEW LETTERS 2014; 113:044801. [PMID: 25105623 DOI: 10.1103/physrevlett.113.044801] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Indexed: 06/03/2023]
Abstract
Radiation-reaction effects in the interaction of an electron bunch with a superstrong focused ultrashort laser pulse are investigated in the quantum radiation-dominated regime. The angle-resolved Compton scattering spectra are calculated in laser pulses of variable duration using a semiclassical description for the radiation-dominated dynamics and a full quantum treatment for the emitted radiation. In dependence of the laser-pulse duration we find signatures of quantum radiation reaction in the radiation spectra, which are characteristic for the focused laser beam and visible in the qualitative behavior of both the angular spread and the spectral bandwidth of the radiation spectra. The signatures are robust with respect to the variation of the electron and laser-beam parameters in a large range. Qualitatively, they differ fully from those in the classical radiation-reaction regime and are measurable with presently available laser technology.
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Affiliation(s)
- Jian-Xing Li
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69029 Heidelberg, Germany
| | | | - Christoph H Keitel
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69029 Heidelberg, Germany
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10
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Ji LL, Pukhov A, Kostyukov IY, Shen BF, Akli K. Radiation-reaction trapping of electrons in extreme laser fields. PHYSICAL REVIEW LETTERS 2014; 112:145003. [PMID: 24765978 DOI: 10.1103/physrevlett.112.145003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Indexed: 06/03/2023]
Abstract
A radiation-reaction trapping (RRT) of electrons is revealed in the near-QED regime of laser-plasma interaction. Electrons quivering in laser pulse experience radiation reaction (RR) recoil force by radiating photons. When the laser field reaches the threshold, the RR force becomes significant enough to compensate for the expelling laser ponderomotive force. Then electrons are trapped inside the laser pulse instead of being scattered off transversely and form a dense plasma bunch. The mechanism is demonstrated both by full three-dimensional particle-in-cell simulations using the QED photonic approach and numerical test-particle modeling based on the classical Landau-Lifshitz formula of RR force. Furthermore, the proposed analysis shows that the threshold of laser field amplitude for RRT is approximately the cubic root of laser wavelength over classical electron radius. Because of the pinching effect of the trapped electron bunch, the required laser intensity for RRT can be further reduced.
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Affiliation(s)
- L L Ji
- Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany and Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - A Pukhov
- Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - I Yu Kostyukov
- Institute of Applied Physics of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia and Lobachevsky National Research University of Nizhni Novgorod, 603950 Nizhny Novgorod, Russia
| | - B F Shen
- Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - K Akli
- The Ohio State University, Columbus, Ohio 43210, USA
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