1
|
Picksley A, Chappell J, Archer E, Bourgeois N, Cowley J, Emerson DR, Feder L, Gu XJ, Jakobsson O, Ross AJ, Wang W, Walczak R, Hooker SM. All-Optical GeV Electron Bunch Generation in a Laser-Plasma Accelerator via Truncated-Channel Injection. Phys Rev Lett 2023; 131:245001. [PMID: 38181162 DOI: 10.1103/physrevlett.131.245001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 10/11/2023] [Accepted: 11/07/2023] [Indexed: 01/07/2024]
Abstract
We describe a simple scheme, truncated-channel injection, to inject electrons directly into the wakefield driven by a high-intensity laser pulse guided in an all-optical plasma channel. We use this approach to generate dark-current-free 1.2 GeV, 4.5% relative energy spread electron bunches with 120 TW laser pulses guided in a 110 mm-long hydrodynamic optical-field-ionized plasma channel. Our experiments and particle-in-cell simulations show that high-quality electron bunches were only obtained when the drive pulse was closely aligned with the channel axis, and was focused close to the density down ramp formed at the channel entrance. Start-to-end simulations of the channel formation, and electron injection and acceleration show that increasing the channel length to 410 mm would yield 3.65 GeV bunches, with a slice energy spread ∼5×10^{-4}.
Collapse
Affiliation(s)
- A Picksley
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - J Chappell
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - E Archer
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - N Bourgeois
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - J Cowley
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - D R Emerson
- Scientific Computing Department, STFC Daresbury Laboratory, Warrington WA4 4AD, United Kingdom
| | - L Feder
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - X J Gu
- Scientific Computing Department, STFC Daresbury Laboratory, Warrington WA4 4AD, United Kingdom
| | - O Jakobsson
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - A J Ross
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - W Wang
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - R Walczak
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
- Somerville College, Woodstock Road, Oxford OX2 6HD, United Kingdom
| | - S M Hooker
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| |
Collapse
|
2
|
Bohlen S, Brümmer T, Grüner F, Lindstrøm CA, Meisel M, Staufer T, Streeter MJV, Veale MC, Wood JC, D'Arcy R, Põder K, Osterhoff J. In Situ Measurement of Electron Energy Evolution in a Laser-Plasma Accelerator. Phys Rev Lett 2022; 129:244801. [PMID: 36563240 DOI: 10.1103/physrevlett.129.244801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 07/22/2022] [Accepted: 10/12/2022] [Indexed: 06/17/2023]
Abstract
We report on a novel, noninvasive method applying Thomson scattering to measure the evolution of the electron beam energy inside a laser-plasma accelerator with high spatial resolution. The determination of the local electron energy enabled the in-situ detection of the acting acceleration fields without altering the final beam state. In this Letter we demonstrate that the accelerating fields evolve from (265±119) GV/m to (9±4) GV/m in a plasma density ramp. The presented data show excellent agreement with particle-in-cell simulations. This method provides new possibilities for detecting the dynamics of plasma-based accelerators and their optimization.
Collapse
Affiliation(s)
- S Bohlen
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - T Brümmer
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - F Grüner
- Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - C A Lindstrøm
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - M Meisel
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - T Staufer
- Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - M J V Streeter
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Centre for Plasma Physics, School of Mathematics and Physics, Queen's University Belfast, BT7 1NN, Belfast, United Kingdom
| | - M C Veale
- UKRI STFC, Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom
| | - J C Wood
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - R D'Arcy
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - K Põder
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - J Osterhoff
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| |
Collapse
|
3
|
Kim DY, Hojbota CI, Mirzaie M, Lee SK, Kim KY, Sung JH, Nam CH. Optical synchronization technique for all-optical Compton scattering. Rev Sci Instrum 2022; 93:113001. [PMID: 36461441 DOI: 10.1063/5.0115918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/09/2022] [Indexed: 06/17/2023]
Abstract
In all-optical Compton scattering driven by a multi-petawatt laser, it is critical to have accurate spatiotemporal synchronization between the ultrarelativistic electron bunch and the ultrahigh-intensity laser beam. Such a synchronization was realized by using two complementary optical setups. The first setup, used for the initial synchronization, recorded the spatial interferogram between the two femtosecond lasers used for a GeV electron beam production and an ultrahigh scattering laser beam. The second one, consisting of spatial and spectral interferometers, measured the time delay between the two laser beams in the range of 0-200 fs in real time. These monitoring systems played an essential role in conducting Compton scattering experiments.
Collapse
Affiliation(s)
- Do Yeon Kim
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju 61005, South Korea
| | - Calin Ioan Hojbota
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju 61005, South Korea
| | - Mohammad Mirzaie
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju 61005, South Korea
| | - Seong Ku Lee
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju 61005, South Korea
| | - Ki Yong Kim
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju 61005, South Korea
| | - Jae Hee Sung
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju 61005, South Korea
| | - Chang Hee Nam
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju 61005, South Korea
| |
Collapse
|
4
|
Brümmer T, Bohlen S, Grüner F, Osterhoff J, Põder K. Compact all-optical precision-tunable narrowband hard Compton X-ray source. Sci Rep 2022; 12:16017. [PMID: 36163419 PMCID: PMC9512799 DOI: 10.1038/s41598-022-20283-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/12/2022] [Indexed: 11/09/2022] Open
Abstract
Readily available bright X-ray beams with narrow bandwidth and tunable energy promise to unlock novel developments in a wide range of applications. Among emerging alternatives to large-scale and costly present-day radiation sources which severely restrict the availability of such beams, compact laser-plasma-accelerator-driven inverse Compton scattering sources show great potential. However, these sources are currently limited to tens of percent bandwidths, unacceptably large for many applications. Here, we show conceptually that using active plasma lenses to tailor the electron bunch-photon interaction, tunable X-ray and gamma beams with percent-level bandwidths can be produced. The central X-ray energy is tunable by varying the focusing strength of the lens, without changing electron bunch properties, allowing for precision-tuning the X-ray beam energy. This method is a key development towards laser-plasma-accelerator-driven narrowband, precision tunable femtosecond photon sources, enabling a paradigm shift and proliferation of compact X-ray applications.
Collapse
Affiliation(s)
- T Brümmer
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - S Bohlen
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - F Grüner
- Universität Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761, Hamburg, Germany
| | - J Osterhoff
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany
| | - K Põder
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany.
| |
Collapse
|
5
|
Xu J, Bae L, Ezzat M, Kim HT, Yang JM, Lee SH, Yoon JW, Sung JH, Lee SK, Ji L, Shen B, Nam CH. Nanoparticle-insertion scheme to decouple electron injection from laser evolution in laser wakefield acceleration. Sci Rep 2022; 12:11128. [PMID: 35778463 PMCID: PMC9249746 DOI: 10.1038/s41598-022-15125-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 05/05/2022] [Indexed: 11/09/2022] Open
Abstract
A localized nanoparticle insertion scheme is developed to decouple electron injection from laser evolution in laser wakefield acceleration. Here we report the experimental realization of a controllable electron injection by the nanoparticle insertion method into a plasma medium, where the injection position is localized within the short range of 100 μm. Nanoparticles were generated by the laser ablation process of a copper blade target using a 3-ns 532-nm laser pulse with fluence above 100 J/cm2. The produced electron bunches with a beam charge above 300 pC and divergence of around 12 mrad show the injection probability over 90% after optimizing the ablation laser energy and the temporal delay between the ablation and the main laser pulses. Since this nanoparticle insertion method can avoid the disturbing effects of electron injection process on laser evolution, the stable high-charge injection method can provide a suitable electron injector for multi-GeV electron sources from low-density plasmas.
Collapse
Affiliation(s)
- Jiancai Xu
- State Key Laboratory of High Field Laser Physics, CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences(CAS), Shanghai, 201800, China
| | - Leejin Bae
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju, 61005, Republic of Korea
| | - Mohamed Ezzat
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju, 61005, Republic of Korea.,Department of Physics, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Hyung Taek Kim
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju, 61005, Republic of Korea. .,Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea.
| | - Jeong Moon Yang
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju, 61005, Republic of Korea
| | - Sang Hwa Lee
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju, 61005, Republic of Korea
| | - Jin Woo Yoon
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju, 61005, Republic of Korea.,Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Jae Hee Sung
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju, 61005, Republic of Korea.,Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Seong Ku Lee
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju, 61005, Republic of Korea.,Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Liangliang Ji
- State Key Laboratory of High Field Laser Physics, CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences(CAS), Shanghai, 201800, China
| | - Baifei Shen
- State Key Laboratory of High Field Laser Physics, CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences(CAS), Shanghai, 201800, China. .,Department of Physics, Shanghai Normal University, Shanghai, 200234, China.
| | - Chang Hee Nam
- Center for Relativistic Laser Science (CoReLS), Institute for Basic Science, Gwangju, 61005, Republic of Korea.,Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| |
Collapse
|
6
|
Laso Garcia A, Hannasch A, Molodtsova M, Ferrari A, Couperus Cadabağ JP, Downer MC, Irman A, Kraft SD, Metzkes-Ng J, Naumann L, Prencipe I, Schramm U, Zeil K, Zgadzaj R, Ziegler T, Cowan TE. Calorimeter with Bayesian unfolding of spectra of high-flux broadband x rays. Rev Sci Instrum 2022; 93:043102. [PMID: 35489906 DOI: 10.1063/5.0078443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 03/13/2022] [Indexed: 06/14/2023]
Abstract
We report the development of a multipurpose differential x-ray calorimeter with a broad energy bandwidth. The absorber architecture is combined with a Bayesian unfolding algorithm to unfold high energy x-ray spectra generated in high-intensity laser-matter interactions. Particularly, we show how to extract absolute energy spectra and how our unfolding algorithm can reconstruct features not included in the initial guess. The performance of the calorimeter is evaluated via Monte Carlo generated data. The method accuracy to reconstruct electron temperatures from bremsstrahlung is shown to be 5% for electron temperatures from 1 to 50 MeV. We study bremsstrahlung generated in solid target interaction showing an electron temperature of 0.56 ± 0.04 MeV for a 700 μm Ti titanium target and 0.53 ± 0.03 MeV for a 50 μm target. We investigate bremsstrahlung from a target irradiated by laser-wakefield accelerated electrons showing an endpoint energy of 551 ± 5 MeV, inverse Compton generated x rays with a peak energy of 1.1 MeV, and calibrated radioactive sources. The total energy range covered by all these sources ranges from 10 keV to 551 MeV.
Collapse
Affiliation(s)
- A Laso Garcia
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - A Hannasch
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712-1081, USA
| | - M Molodtsova
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - A Ferrari
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - J P Couperus Cadabağ
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - M C Downer
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712-1081, USA
| | - A Irman
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - S D Kraft
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - J Metzkes-Ng
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - L Naumann
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - I Prencipe
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - U Schramm
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - K Zeil
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - R Zgadzaj
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712-1081, USA
| | - T Ziegler
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| | - T E Cowan
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01328, Germany
| |
Collapse
|
7
|
Petrillo V, Drebot I, Krafft G, Maroli C, Rossi AR, Rossetti Conti MR, Ruijter M, Terzić B. A Laser Frequency Transverse Modulation Might Compensate for the Spectral Broadening Due to Large Electron Energy Spread in Thomson Sources. Photonics 2022; 9:62. [DOI: 10.3390/photonics9020062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Compact laser plasma accelerators generate high-energy electron beams with increasing quality. When used in inverse Compton backscattering, however, the relatively large electron energy spread jeopardizes potential applications requiring small bandwidths. We present here a novel interaction scheme that allows us to compensate for the negative effects of the electron energy spread on the spectrum, by introducing a transverse spatial frequency modulation in the laser pulse. Such a laser chirp, together with a properly dispersed electron beam, can substantially reduce the broadening of the Compton bandwidth due to the electron energy spread. We show theoretical analysis and numerical simulations for hard X-ray Thomson sources based on laser plasma accelerators.
Collapse
|
8
|
Lv QZ, Raicher E, Keitel CH, Hatsagortsyan KZ. High-Brilliance Ultranarrow-Band X Rays via Electron Radiation in Colliding Laser Pulses. Phys Rev Lett 2022; 128:024801. [PMID: 35089763 DOI: 10.1103/physrevlett.128.024801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 12/08/2021] [Accepted: 12/17/2021] [Indexed: 06/14/2023]
Abstract
A setup of a unique x-ray source is put forward employing a relativistic electron beam interacting with two counterpropagating laser pulses in the nonlinear few-photon regime. In contrast to Compton scattering sources, the envisaged x-ray source exhibits an extremely narrow relative bandwidth of the order of 10^{-4}, comparable with an x-ray free-electron laser. The brilliance of the x rays can be an order of magnitude higher than that of a state-of-the-art Compton source. By tuning the laser intensities and the electron energy, one can realize either a single peak or a comblike x-ray source of around keV energy. The laser intensity and the electron energy in the suggested setup are rather moderate, rendering this scheme compact and tabletop size, as opposed to x-ray free-electron laser and synchrotron infrastructures.
Collapse
Affiliation(s)
- Q Z Lv
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - E Raicher
- Soreq Nuclear Research Center, 81800 Yavne, Israel
| | - C H Keitel
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - K Z Hatsagortsyan
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| |
Collapse
|
9
|
Jakobsson O, Hooker SM, Walczak R. Gev-Scale Accelerators Driven by Plasma-Modulated Pulses from Kilohertz Lasers. Phys Rev Lett 2021; 127:184801. [PMID: 34767393 DOI: 10.1103/physrevlett.127.184801] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/24/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
We describe a new approach for driving GeV-scale plasma accelerators with long laser pulses. We show that the temporal phase of a long, high-energy driving laser pulse can be modulated periodically by copropagating it with a low-amplitude plasma wave driven by a short, low-energy seed pulse. Compression of the modulated driver by a dispersive optic generates a train of short pulses suitable for resonantly driving a plasma accelerator. Modulation of the driver occurs via well-controlled linear processes, as confirmed by good agreement between particle-in-cell (PIC) simulations and an analytic model. PIC simulations demonstrate that a 1.7 J, 1 ps driver, and a 140 mJ, 40 fs seed pulse can accelerate electrons to energies of 0.65 GeV in a plasma channel with an axial density of 2.5×10^{17} cm^{-3}. This work opens a route to high repetition-rate, GeV-scale plasma accelerators driven by thin-disk lasers, which can provide joule-scale, picosecond-duration laser pulses at multikilohertz repetition rates and high wall-plug efficiencies.
Collapse
Affiliation(s)
- O Jakobsson
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - S M Hooker
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - R Walczak
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| |
Collapse
|
10
|
|
11
|
Maier AR, Kajumba N, Guggenmos A, Werle C, Wenz J, Delbos N, Zeitler B, Dornmair I, Schmidt J, Gullikson EM, Krausz F, Schramm U, Kleineberg U, Karsch S, Grüner F. Water-Window X-Ray Pulses from a Laser-Plasma Driven Undulator. Sci Rep 2020; 10:5634. [PMID: 32221373 DOI: 10.1038/s41598-020-62401-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 03/12/2020] [Indexed: 11/17/2022] Open
Abstract
Femtosecond (fs) x-ray pulses are a key tool to study the structure and dynamics of matter on its natural length and time scale. To complement radio-frequency accelerator-based large-scale facilities, novel laser-based mechanisms hold promise for compact laboratory-scale x-ray sources. Laser-plasma driven undulator radiation in particular offers high peak-brightness, optically synchronized few-fs pulses reaching into the few-nanometer (nm) regime. To date, however, few experiments have successfully demonstrated plasma-driven undulator radiation. Those that have, typically operated at single and comparably long wavelengths. Here we demonstrate plasma-driven undulator radiation with octave-spanning tuneability at discrete wavelengths reaching from 13 nm to 4 nm. Studying spontaneous undulator radiation is an important step towards a plasma-driven free-electron laser. Our specific setup creates a photon pulse, which closely resembles the plasma electron bunch length and charge profile and thus might enable novel methods to characterize the longitudinal electron phase space.
Collapse
|
12
|
Ding H, Döpp A, Gilljohann M, Götzfried J, Schindler S, Wildgruber L, Cheung G, Hooker SM, Karsch S. Nonlinear plasma wavelength scalings in a laser wakefield accelerator. Phys Rev E 2020; 101:023209. [PMID: 32168651 DOI: 10.1103/physreve.101.023209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 01/24/2020] [Indexed: 11/07/2022]
Abstract
Laser wakefield acceleration relies on the excitation of a plasma wave due to the ponderomotive force of an intense laser pulse. However, plasma wave trains in the wake of the laser have scarcely been studied directly in experiments. Here we use few-cycle shadowgraphy in conjunction with interferometry to quantify plasma waves excited by the laser within the density range of GeV-scale accelerators, i.e., a few 10^{18}cm^{-3}. While analytical models suggest a clear dependency between the nonlinear plasma wavelength and the peak potential a_{0}, our study shows that the analytical models are only accurate for driver strength a_{0}≲1. Experimental data and systematic particle-in-cell simulations reveal that nonlinear lengthening of the plasma wave train depends not solely on the laser peak intensity but also on the waist of the focal spot.
Collapse
Affiliation(s)
- H Ding
- Ludwig-Maximilians-Universität München, Am Coulombwall 1, D-85748 Garching, Germany.,Max Planck Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany
| | - A Döpp
- Ludwig-Maximilians-Universität München, Am Coulombwall 1, D-85748 Garching, Germany.,Max Planck Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany
| | - M Gilljohann
- Ludwig-Maximilians-Universität München, Am Coulombwall 1, D-85748 Garching, Germany.,Max Planck Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany
| | - J Götzfried
- Ludwig-Maximilians-Universität München, Am Coulombwall 1, D-85748 Garching, Germany
| | - S Schindler
- Ludwig-Maximilians-Universität München, Am Coulombwall 1, D-85748 Garching, Germany
| | - L Wildgruber
- Ludwig-Maximilians-Universität München, Am Coulombwall 1, D-85748 Garching, Germany
| | - G Cheung
- John Adams Institute & Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - S M Hooker
- John Adams Institute & Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - S Karsch
- Ludwig-Maximilians-Universität München, Am Coulombwall 1, D-85748 Garching, Germany.,Max Planck Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany
| |
Collapse
|
13
|
Martinez de la Ossa A, Assmann RW, Bussmann M, Corde S, Couperus Cabadağ JP, Debus A, Döpp A, Ferran Pousa A, Gilljohann MF, Heinemann T, Hidding B, Irman A, Karsch S, Kononenko O, Kurz T, Osterhoff J, Pausch R, Schöbel S, Schramm U. Hybrid LWFA-PWFA staging as a beam energy and brightness transformer: conceptual design and simulations. Philos Trans A Math Phys Eng Sci 2019; 377:20180175. [PMID: 31230579 PMCID: PMC6602909 DOI: 10.1098/rsta.2018.0175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/27/2019] [Indexed: 06/09/2023]
Abstract
We present a conceptual design for a hybrid laser-driven plasma wakefield accelerator (LWFA) to beam-driven plasma wakefield accelerator (PWFA). In this set-up, the output beams from an LWFA stage are used as input beams of a new PWFA stage. In the PWFA stage, a new witness beam of largely increased quality can be produced and accelerated to higher energies. The feasibility and the potential of this concept is shown through exemplary particle-in-cell simulations. In addition, preliminary simulation results for a proof-of-concept experiment in Helmholtz-Zentrum Dresden-Rossendorf (Germany) are shown. This article is part of the Theo Murphy meeting issue 'Directions in particle beam-driven plasma wakefield acceleration'.
Collapse
Affiliation(s)
| | - R. W. Assmann
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - M. Bussmann
- Helmholtz-Zentrum Dresden-Rossendorf HZDR, 01328 Dresden, Germany
| | - S. Corde
- LOA, ENSTA ParisTech - CNRS - École Polytechnique - Université Paris-Saclay, France
| | | | - A. Debus
- Helmholtz-Zentrum Dresden-Rossendorf HZDR, 01328 Dresden, Germany
| | - A. Döpp
- Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching, Germany
| | - A. Ferran Pousa
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - M. F. Gilljohann
- Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching, Germany
| | - T. Heinemann
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
- Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow G4 0NG, UK
| | - B. Hidding
- Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow G4 0NG, UK
| | - A. Irman
- Helmholtz-Zentrum Dresden-Rossendorf HZDR, 01328 Dresden, Germany
| | - S. Karsch
- Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching, Germany
| | - O. Kononenko
- LOA, ENSTA ParisTech - CNRS - École Polytechnique - Université Paris-Saclay, France
| | - T. Kurz
- Helmholtz-Zentrum Dresden-Rossendorf HZDR, 01328 Dresden, Germany
| | - J. Osterhoff
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - R. Pausch
- Helmholtz-Zentrum Dresden-Rossendorf HZDR, 01328 Dresden, Germany
| | - S. Schöbel
- Helmholtz-Zentrum Dresden-Rossendorf HZDR, 01328 Dresden, Germany
| | - U. Schramm
- Helmholtz-Zentrum Dresden-Rossendorf HZDR, 01328 Dresden, Germany
| |
Collapse
|
14
|
Seipt D, Kharin VY, Rykovanov SG. Optimizing Laser Pulses for Narrow-Band Inverse Compton Sources in the High-Intensity Regime. Phys Rev Lett 2019; 122:204802. [PMID: 31172747 DOI: 10.1103/physrevlett.122.204802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Indexed: 06/09/2023]
Abstract
Scattering of ultraintense short laser pulses off relativistic electrons allows one to generate a large number of X- or gamma-ray photons with the expense of the spectral width-temporal pulsing of the laser inevitable leads to considerable spectral broadening. In this Letter, we describe a simple method to generate optimized laser pulses that compensate the nonlinear spectrum broadening and can be thought of as a superposition of two oppositely linearly chirped pulses delayed with respect to each other. We develop a simple analytical model that allows us to predict the optimal parameters of such a two-pulse-the delay, amount of chirp, and relative phase-for generation of a narrow-band γ-ray spectrum. Our predictions are confirmed by numerical optimization and simulations including three-dimensional effects.
Collapse
Affiliation(s)
- Daniel Seipt
- Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany
- Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Vasily Yu Kharin
- Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany
- Research Institute, Moscow R&D Lab, Moscow, Bersenevskaya nab., 6, 119072, Russia
| | - Sergey G Rykovanov
- Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany
- Center for Computational and Data-Intensive Science and Engineering, Skolkovo Institute of Science and Technology, Nobel Str. 3, Skolkovo, Russia
| |
Collapse
|
15
|
Haffa D, Bin J, Speicher M, Allinger K, Hartmann J, Kreuzer C, Ridente E, Ostermayr TM, Schreiber J. Temporally Resolved Intensity Contouring (TRIC) for characterization of the absolute spatio-temporal intensity distribution of a relativistic, femtosecond laser pulse. Sci Rep 2019; 9:7697. [PMID: 31118430 PMCID: PMC6531490 DOI: 10.1038/s41598-019-42683-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 04/05/2019] [Indexed: 12/03/2022] Open
Abstract
Today’s high-power laser systems are capable of reaching photon intensities up to 1022 W cm−2, generating plasmas when interacting with material. The high intensity and ultrashort laser pulse duration (fs) make direct observation of plasma dynamics a challenging task. In the field of laser-plasma physics and especially for the acceleration of ions, the spatio-temporal intensity distribution is one of the most critical aspects. We describe a novel method based on a single-shot (i.e. single laser pulse) chirped probing scheme, taking nine sequential frames at frame rates up to THz. This technique, to which we refer as temporally resolved intensity contouring (TRIC) enables single-shot measurement of laser-plasma dynamics. Using TRIC, we demonstrate the reconstruction of the complete spatio-temporal intensity distribution of a high-power laser pulse in the focal plane at full pulse energy with sub-picosecond resolution.
Collapse
Affiliation(s)
- Daniel Haffa
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany.
| | - Jianhui Bin
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany. .,Accelerator Technology and Applied Physics Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
| | - Martin Speicher
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany.
| | - Klaus Allinger
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany
| | - Jens Hartmann
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany
| | - Christian Kreuzer
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany
| | - Enrico Ridente
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany.,Max-Planck-Institut für Quantenoptik, 85748, Garching b. München, Germany
| | - Tobias M Ostermayr
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany.,Max-Planck-Institut für Quantenoptik, 85748, Garching b. München, Germany.,Accelerator Technology and Applied Physics Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jörg Schreiber
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany
| |
Collapse
|
16
|
Cardenas DE, Ostermayr TM, Di Lucchio L, Hofmann L, Kling MF, Gibbon P, Schreiber J, Veisz L. Sub-cycle dynamics in relativistic nanoplasma acceleration. Sci Rep 2019; 9:7321. [PMID: 31086214 PMCID: PMC6513988 DOI: 10.1038/s41598-019-43635-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 04/28/2019] [Indexed: 11/26/2022] Open
Abstract
The interaction of light with nanometer-sized solids provides the means of focusing optical radiation to sub-wavelength spatial scales with associated electric field enhancements offering new opportunities for multifaceted applications. We utilize collective effects in nanoplasmas with sub-two-cycle light pulses of extreme intensity to extend the waveform-dependent electron acceleration regime into the relativistic realm, by using 106 times higher intensity than previous works to date. Through irradiation of nanometric tungsten needles, we obtain multi-MeV energy electron bunches, whose energy and direction can be steered by the combined effect of the induced near-field and the laser field. We identified a two-step mechanism for the electron acceleration: (i) ejection within a sub-half-optical-cycle into the near-field from the target at >TVm-1 acceleration fields, and (ii) subsequent acceleration in vacuum by the intense laser field. Our observations raise the prospect of isolating and controlling relativistic attosecond electron bunches, and pave the way for next generation electron and photon sources.
Collapse
Affiliation(s)
- D E Cardenas
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann Strasse 1, 85748, Garching, Germany
- Ludwig-Maximilian-Universität München, Am Couloumbwall 1, 85748, Garching, Germany
| | - T M Ostermayr
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann Strasse 1, 85748, Garching, Germany
- Ludwig-Maximilian-Universität München, Am Couloumbwall 1, 85748, Garching, Germany
| | - L Di Lucchio
- Forschungszentrum Jülich GmbH, Institute for Advanced Simulation, Jülich Supercomputing Centre, D-52425, Jülich, Germany
| | - L Hofmann
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann Strasse 1, 85748, Garching, Germany
- Ludwig-Maximilian-Universität München, Am Couloumbwall 1, 85748, Garching, Germany
| | - M F Kling
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann Strasse 1, 85748, Garching, Germany
- Ludwig-Maximilian-Universität München, Am Couloumbwall 1, 85748, Garching, Germany
| | - P Gibbon
- Forschungszentrum Jülich GmbH, Institute for Advanced Simulation, Jülich Supercomputing Centre, D-52425, Jülich, Germany
- Centre for Mathematical Plasma Astrophysics, Department of Mathematics, KU Leuven, Celestijnenlaan 200B, 3001, Heverlee, Belgium
| | - J Schreiber
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann Strasse 1, 85748, Garching, Germany
- Ludwig-Maximilian-Universität München, Am Couloumbwall 1, 85748, Garching, Germany
| | - L Veisz
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann Strasse 1, 85748, Garching, Germany.
- Department of Physics, Umeå University, SE-901 87, Umeå, Sweden.
| |
Collapse
|
17
|
Wang WM, Sheng ZM, Gibbon P, Chen LM, Li YT, Zhang J. Collimated ultrabright gamma rays from electron wiggling along a petawatt laser-irradiated wire in the QED regime. Proc Natl Acad Sci U S A 2018; 115:9911-6. [PMID: 30224456 DOI: 10.1073/pnas.1809649115] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Even though bright X-rays below mega-electron volt photon energy can be obtained from X-ray free electron lasers and synchrotron radiation facilities, it remains a great challenge to generate collimated bright gamma-ray beams over 10 mega-electron volts. We propose a scheme to efficiently generate such beams from submicron wires irradiated by petawatt lasers, where electron accelerating and wiggling are achieved simultaneously. With significant quantum electrodynamics effects existing even with petawatt lasers, our full 3D simulations show that directional gamma rays can be generated with thousand-fold higher brilliance and thousand-fold higher photon energy than those from synchrotron radiation facilities. In addition, the photon yield efficiency approaches 10%, 100,000-fold higher than those typical from betatron radiation and Compton scattering based on laser-wakefield accelerators. Even though high-quality X- and gamma rays with photon energy below mega-electron volt (MeV) are available from large-scale X-ray free electron lasers and synchrotron radiation facilities, it remains a great challenge to generate bright gamma rays over 10 MeV. Recently, gamma rays with energies up to the MeV level were observed in Compton scattering experiments based on laser wakefield accelerators, but the yield efficiency was as low as 10−6, owing to low charge of the electron beam. Here, we propose a scheme to efficiently generate gamma rays of hundreds of MeV from submicrometer wires irradiated by petawatt lasers, where electron accelerating and wiggling are achieved simultaneously. The wiggling is caused by the quasistatic electric and magnetic fields induced around the wire surface, and these are so high that even quantum electrodynamics (QED) effects become significant for gamma-ray generation, although the driving lasers are only at the petawatt level. Our full 3D simulations show that directional, ultrabright gamma rays are generated, containing 1012 photons between 5 and 500 MeV within a 10-fs duration. The brilliance, up to 1027 photons s−1 mrad−2 mm−2 per 0.1% bandwidth at an average photon energy of 20 MeV, is second only to X-ray free electron lasers, while the photon energy is 3 orders of magnitude higher than the latter. In addition, the gamma ray yield efficiency approaches 10%—that is, 5 orders of magnitude higher than the Compton scattering based on laser wakefield accelerators. Such high-energy, ultrabright, femtosecond-duration gamma rays may find applications in nuclear photonics, radiotherapy, and laboratory astrophysics.
Collapse
|
18
|
Döpp A, Thaury C, Guillaume E, Massimo F, Lifschitz A, Andriyash I, Goddet JP, Tazfi A, Ta Phuoc K, Malka V. Energy-Chirp Compensation in a Laser Wakefield Accelerator. Phys Rev Lett 2018; 121:074802. [PMID: 30169048 DOI: 10.1103/physrevlett.121.074802] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Indexed: 06/08/2023]
Abstract
The energy spread in laser wakefield accelerators is primarily limited by the energy chirp introduced during the injection and acceleration processes. Here, we propose the use of longitudinal density tailoring to reduce the beam chirp at the end of the accelerator. Experimental data sustained by quasi-3D particle-in-cell simulations show that broadband electron beams can be converted to quasimonoenergetic beams of ≤10% energy spread while maintaining a high charge of more than 120 pC. In the linear and quasilinear regimes of wakefield acceleration, the method could provide even lower, subpercent level, energy spread.
Collapse
Affiliation(s)
- A Döpp
- LOA, ENSTA ParisTech-CNRS-École Polytechnique-Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
- Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching, Germany
| | - C Thaury
- LOA, ENSTA ParisTech-CNRS-École Polytechnique-Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
| | - E Guillaume
- LOA, ENSTA ParisTech-CNRS-École Polytechnique-Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
| | - F Massimo
- LOA, ENSTA ParisTech-CNRS-École Polytechnique-Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
| | - A Lifschitz
- LOA, ENSTA ParisTech-CNRS-École Polytechnique-Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
| | - I Andriyash
- LOA, ENSTA ParisTech-CNRS-École Polytechnique-Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
- Department of Physics and Complex Systems, Weizmann Institute of Science, Rehovot 76100, Israel
| | - J-P Goddet
- LOA, ENSTA ParisTech-CNRS-École Polytechnique-Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
| | - A Tazfi
- LOA, ENSTA ParisTech-CNRS-École Polytechnique-Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
| | - K Ta Phuoc
- LOA, ENSTA ParisTech-CNRS-École Polytechnique-Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
| | - V Malka
- LOA, ENSTA ParisTech-CNRS-École Polytechnique-Université Paris-Saclay, 828 Boulevard des Maréchaux, 91762 Palaiseau Cedex, France
- Department of Physics and Complex Systems, Weizmann Institute of Science, Rehovot 76100, Israel
| |
Collapse
|
19
|
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. Rev Sci Instrum 2018; 89:085118. [PMID: 30184659 DOI: 10.1063/1.5040979] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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.
Collapse
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
| |
Collapse
|
20
|
Shalloo RJ, Arran C, Corner L, Holloway J, Jonnerby J, Walczak R, Milchberg HM, Hooker SM. Hydrodynamic optical-field-ionized plasma channels. Phys Rev E 2018; 97:053203. [PMID: 29906935 DOI: 10.1103/physreve.97.053203] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Indexed: 11/07/2022]
Abstract
We present experiments and numerical simulations which demonstrate that fully ionized, low-density plasma channels could be formed by hydrodynamic expansion of plasma columns produced by optical field ionization. Simulations of the hydrodynamic expansion of plasma columns formed in hydrogen by an axicon lens show the generation of 200 mm long plasma channels with axial densities of order n_{e}(0)=1×10^{17}cm^{-3} and lowest-order modes of spot size W_{M}≈40μm. These simulations show that the laser energy required to generate the channels is modest: of order 1 mJ per centimeter of channel. The simulations are confirmed by experiments with a spherical lens which show the formation of short plasma channels with 1.5×10^{17}cm^{-3}≲n_{e}(0)≲1×10^{18}cm^{-3} and 61μm≳W_{M}≳33μm. Low-density plasma channels of this type would appear to be well suited as multi-GeV laser-plasma accelerator stages capable of long-term operation at high pulse repetition rates.
Collapse
Affiliation(s)
- R J Shalloo
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - C Arran
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - L Corner
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - J Holloway
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - J Jonnerby
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - R Walczak
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - H M Milchberg
- Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA
| | - S M Hooker
- John Adams Institute for Accelerator Science and Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| |
Collapse
|
21
|
Vranic M, Klimo O, Korn G, Weber S. Multi-GeV electron-positron beam generation from laser-electron scattering. Sci Rep 2018; 8:4702. [PMID: 29549367 DOI: 10.1038/s41598-018-23126-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 03/05/2018] [Indexed: 11/28/2022] Open
Abstract
The new generation of laser facilities is expected to deliver short (10 fs–100 fs) laser pulses with 10–100 PW of peak power. This opens an opportunity to study matter at extreme intensities in the laboratory and provides access to new physics. Here we propose to scatter GeV-class electron beams from laser-plasma accelerators with a multi-PW laser at normal incidence. In this configuration, one can both create and accelerate electron-positron pairs. The new particles are generated in the laser focus and gain relativistic momentum in the direction of laser propagation. Short focal length is an advantage, as it allows the particles to be ejected from the focal region with a net energy gain in vacuum. Electron-positron beams obtained in this setup have a low divergence, are quasi-neutral and spatially separated from the initial electron beam. The pairs attain multi-GeV energies which are not limited by the maximum energy of the initial electron beam. We present an analytical model for the expected energy cutoff, supported by 2D and 3D particle-in-cell simulations. The experimental implications, such as the sensitivity to temporal synchronisation and laser duration is assessed to provide guidance for the future experiments.
Collapse
|
22
|
Kharin VY, Seipt D, Rykovanov SG. Higher-Dimensional Caustics in Nonlinear Compton Scattering. Phys Rev Lett 2018; 120:044802. [PMID: 29437462 DOI: 10.1103/physrevlett.120.044802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Indexed: 06/08/2023]
Abstract
A description of the spectral and angular distributions of Compton scattered light in collisions of intense laser pulses with high-energy electrons is unwieldy and usually requires numerical simulations. However, due to the large number of parameters affecting the spectra such numerical investigations can become computationally expensive. Using methods of catastrophe theory we predict higher-dimensional caustics in the spectra of the Compton scattered light, which are associated with bright narrow-band spectral lines, and in the simplest case can be controlled by the value of the linear chirp of the pulse. These findings require no full-scale calculations and have direct consequences for the photon yield enhancement of future nonlinear Compton scattering x-ray or gamma-ray sources.
Collapse
Affiliation(s)
| | - Daniel Seipt
- Lancaster University, Physics Department, Bailrigg, Lancaster LA1 4YW, United Kingdom
- Cockcroft Institute, Daresbury Laboratory, Keckwick Ln, Warrington WA4 4AD, United Kingdom
| | | |
Collapse
|
23
|
Krämer JM, Jochmann A, Budde M, Bussmann M, Couperus JP, Cowan TE, Debus A, Köhler A, Kuntzsch M, Laso García A, Lehnert U, Michel P, Pausch R, Zarini O, Schramm U, Irman A. Making spectral shape measurements in inverse Compton scattering a tool for advanced diagnostic applications. Sci Rep 2018; 8:1398. [PMID: 29362472 DOI: 10.1038/s41598-018-19546-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 12/29/2017] [Indexed: 11/27/2022] Open
Abstract
Interaction of relativistic electron beams with high power lasers can both serve as a secondary light source and as a novel diagnostic tool for various beam parameters. For both applications, it is important to understand the dynamics of the inverse Compton scattering mechanism and the dependence of the scattered light’s spectral properties on the interacting laser and electron beam parameters. Measurements are easily misinterpreted due to the complex interplay of the interaction parameters. Here we report the potential of inverse Compton scattering as an advanced diagnostic tool by investigating two of the most influential interaction parameters, namely the laser intensity and the electron beam emittance. Established scaling laws for the spectral bandwidth and redshift of the mean scattered photon energy are refined. This allows for a quantitatively well matching prediction of the spectral shape. Driving the interaction to a nonlinear regime, we spectrally resolve the rise of higher harmonic radiation with increasing laser intensity. Unprecedented agreement with 3D radiation simulations is found, showing the good control and characterization of the interaction. The findings advance the interpretation of inverse Compton scattering measurements into a diagnostic tool for electron beams from laser plasma acceleration.
Collapse
|
24
|
Cowley J, Thornton C, Arran C, Shalloo RJ, Corner L, Cheung G, Gregory CD, Mangles SPD, Matlis NH, Symes DR, Walczak R, Hooker SM. Excitation and Control of Plasma Wakefields by Multiple Laser Pulses. Phys Rev Lett 2017; 119:044802. [PMID: 29341755 DOI: 10.1103/physrevlett.119.044802] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Indexed: 06/07/2023]
Abstract
We demonstrate experimentally the resonant excitation of plasma waves by trains of laser pulses. We also take an important first step to achieving an energy recovery plasma accelerator by showing that a plasma wave can be damped by an out-of-resonance trailing laser pulse. The measured laser wakefields are found to be in excellent agreement with analytical and numerical models of wakefield excitation in the linear regime. Our results indicate a promising direction for achieving highly controlled, GeV-scale laser-plasma accelerators operating at multikilohertz repetition rates.
Collapse
Affiliation(s)
- J Cowley
- John Adams Institute for Accelerator Science, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - C Thornton
- John Adams Institute for Accelerator Science, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - C Arran
- John Adams Institute for Accelerator Science, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - R J Shalloo
- John Adams Institute for Accelerator Science, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - L Corner
- John Adams Institute for Accelerator Science, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - G Cheung
- John Adams Institute for Accelerator Science, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - C D Gregory
- Central Laser Facility, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - S P D Mangles
- John Adams Institute for Accelerator Science, Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom
| | - N H Matlis
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, Hamburg 22607, Germany
| | - D R Symes
- Central Laser Facility, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - R Walczak
- John Adams Institute for Accelerator Science, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| | - S M Hooker
- John Adams Institute for Accelerator Science, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
| |
Collapse
|
25
|
Westphal MS, Lim SN, Nahar SN, Chowdhury E, Pradhan AK. Broadband, monochromatic and quasi-monochromatic x-ray propagation in multi-Z media for imaging and diagnostics. Phys Med Biol 2017; 62:6361-6378. [PMID: 28665295 DOI: 10.1088/1361-6560/aa7cd6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
With the advent of monochromatic and quasi-monochromatic x-ray sources, we explore their potential with computational and experimental studies on propagation through a combination of low and high-Z (atomic number) media for applications to imaging and detection. The multi-purpose code GEANT4 and a new code PHOTX are employed in numerical simulations, and a variety of x-ray sources are considered: conventional broadband devices with well-known spectra, quasi-monochromatic laser driven sources, and monochromatic synchrotron x-rays. Phantom samples consisting of layers of low-Z and high-Z material are utilized, with atomic-molecular species ranging from H2O to gold. Differential and total attenuation of x-ray fluxes from the different x-ray sources are illustrated through simulated x-ray images. Main conclusions of this study are: I. It is shown that a 65 keV Gaussian quasi-monochromatic source is capable of better contrast with less radiation exposure than a common 120 kV broadband simulator. II. A quantitative measure is defined and computed as a metric to compare the efficacy of any two x-ray sources, as a function of concentration of high-Z moieties in predominantly low-Z environment and depth of penetration. III. Characteristic spectral features of [Formula: see text], [Formula: see text] fluorescent emission and Compton scattering indicate pathways for accelerating x-ray photoexcitation and absorption; in particular, we model the tungsten [Formula: see text] at 59 keV alongside experimental measurements at the European synchrotron research facility to search for the signature of induced [Formula: see text] resonance fluorescence. The present study should contribute to the understanding of diagnostic potential of new x-ray sources under development, as well as the underlying fundamental physical processes and features for biomedical applications.
Collapse
Affiliation(s)
- Maximillian S Westphal
- Biophysics Graduate Program, The Ohio State University, Columbus, OH 43210, United States of America
| | | | | | | | | |
Collapse
|
26
|
Walker PA, Alesini PD, Alexandrova AS, Anania MP, Andreev NE, Andriyash I, Aschikhin A, Assmann RW, Audet T, Bacci A, Barna IF, Beaton A, Beck A, Beluze A, Bernhard A, Bielawski S, Bisesto FG, Boedewadt J, Brandi F, Bringer O, Brinkmann R, Bründermann E, Büscher M, Bussmann M, Bussolino GC, Chance A, Chanteloup JC, Chen M, Chiadroni E, Cianchi A, Clarke J, Cole J, Couprie ME, Croia M, Cros B, Dale J, Dattoli G, Delerue N, Delferriere O, Delinikolas P, Dias J, Dorda U, Ertel K, Ferran Pousa A, Ferrario M, Filippi F, Fils J, Fiorito R, Fonseca RA, Galimberti M, Gallo A, Garzella D, Gastinel P, Giove D, Giribono A, Gizzi LA, Grüner FJ, Habib AF, Haefner LC, Heinemann T, Hidding B, Holzer BJ, Hooker SM, Hosokai T, Irman A, Jaroszynski DA, Jaster-Merz S, Joshi C, Kaluza MC, Kando M, Karger OS, Karsch S, Khazanov E, Khikhlukha D, Knetsch A, Kocon D, Koester P, Kononenko O, Korn G, Kostyukov I, Labate L, Lechner C, Leemans WP, Lehrach A, Li FY, Li X, Libov V, Lifschitz A, Litvinenko V, Lu W, Maier AR, Malka V, Manahan GG, Mangles SPD, Marchetti B, Marocchino A, Martinez de la Ossa A, Martins JL, Massimo F, Mathieu F, Maynard G, Mehrling TJ, Molodozhentsev AY, Mosnier A, Mostacci A, Mueller AS, Najmudin Z, Nghiem PAP, Nguyen F, Niknejadi P, Osterhoff J, Papadopoulos D, Patrizi B, Pattathil R, Petrillo V, Pocsai MA, Poder K, Pompili R, Pribyl L, Pugacheva D, Romeo S, Rossi AR, Roussel E, Sahai AA, Scherkl P, Schramm U, Schroeder CB, Schwindling J, Scifo J, Serafini L, Sheng ZM, Silva LO, Silva T, Simon C, Sinha U, Specka A, Streeter MJV, Svystun EN, Symes D, Szwaj C, Tauscher G, Thomas AGR, Thompson N, Toci G, Tomassini P, Vaccarezza C, Vannini M, Vieira JM, Villa F, Wahlström CG, Walczak R, Weikum MK, Welsch CP, Wiemann C, Wolfenden J, Xia G, Yabashi M, Yu L, Zhu J, Zigler A. Horizon 2020 EuPRAXIA design study. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/874/1/012029] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
27
|
Yu C, Qi R, Wang W, Liu J, Li W, Wang C, Zhang Z, Liu J, Qin Z, Fang M, Feng K, Wu Y, Tian Y, Xu Y, Wu F, Leng Y, Weng X, Wang J, Wei F, Yi Y, Song Z, Li R, Xu Z. Ultrahigh brilliance quasi-monochromatic MeV γ-rays based on self-synchronized all-optical Compton scattering. Sci Rep 2016; 6:29518. [PMID: 27405540 PMCID: PMC4942800 DOI: 10.1038/srep29518] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 06/20/2016] [Indexed: 11/18/2022] Open
Abstract
Inverse Compton scattering between ultra-relativistic electrons and an intense laser field has been proposed as a major route to generate compact high-brightness and high-energy γ-rays. Attributed to the inherent synchronization mechanism, an all-optical Compton scattering γ-ray source, using one laser to both accelerate electrons and scatter via the reflection of a plasma mirror, has been demonstrated in proof-of-principle experiments to produce a x-ray source near 100 keV. Here, by designing a cascaded laser wakefield accelerator to generate high-quality monoenergetic e-beams, which are bound to head-on collide with the intense driving laser pulse via the reflection of a 20-um-thick Ti foil, we produce tunable quasi-monochromatic MeV γ-rays (33% full-width at half-maximum) with a peak brilliance of ~3 × 1022 photons s−1 mm−2 mrad−2 0.1% BW at 1 MeV. To the best of our knowledge, it is one order of magnitude higher than ever reported value of its kinds in MeV regime. This compact ultrahigh brilliance γ-ray source may provide applications in nuclear resonance fluorescence, x-ray radiology and ultrafast pump-probe nondestructive inspection.
Collapse
Affiliation(s)
- Changhai Yu
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Rong Qi
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Wentao Wang
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Jiansheng Liu
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.,IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wentao Li
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Cheng Wang
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Zhijun Zhang
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Jiaqi Liu
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Zhiyong Qin
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Ming Fang
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Ke Feng
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Ying Wu
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Ye Tian
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Yi Xu
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Fenxiang Wu
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Yuxin Leng
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Xiufeng Weng
- State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024, China
| | - Jihu Wang
- State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024, China
| | - Fuli Wei
- State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024, China
| | - Yicheng Yi
- State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024, China
| | - Zhaohui Song
- State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024, China
| | - Ruxin Li
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.,IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhizhan Xu
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| |
Collapse
|
28
|
Luo J, Chen M, Zeng M, Vieira J, Yu LL, Weng SM, Silva LO, Jaroszynski DA, Sheng ZM, Zhang J. A compact tunable polarized X-ray source based on laser-plasma helical undulators. Sci Rep 2016; 6:29101. [PMID: 27377126 DOI: 10.1038/srep29101] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 06/14/2016] [Indexed: 11/08/2022] Open
Abstract
Laser wakefield accelerators have great potential as the basis for next generation compact radiation sources because of their extremely high accelerating gradients. However, X-ray radiation from such devices still lacks tunability, especially of the intensity and polarization distributions. Here we propose a tunable polarized radiation source based on a helical plasma undulator in a plasma channel guided wakefield accelerator. When a laser pulse is initially incident with a skew angle relative to the channel axis, the laser and accelerated electrons experience collective spiral motions, which leads to elliptically polarized synchrotron-like radiation with flexible tunability on radiation intensity, spectra and polarization. We demonstrate that a radiation source with millimeter size and peak brilliance of 2 × 10(19) photons/s/mm(2)/mrad(2)/0.1% bandwidth can be made with moderate laser and electron beam parameters. This brilliance is comparable with third generation synchrotron radiation facilities running at similar photon energies, suggesting that laser plasma based radiation sources are promising for advanced applications.
Collapse
|
29
|
Golovin G, Banerjee S, Liu C, Chen S, Zhang J, Zhao B, Zhang P, Veale M, Wilson M, Seller P, Umstadter D. Intrinsic beam emittance of laser-accelerated electrons measured by x-ray spectroscopic imaging. Sci Rep 2016; 6:24622. [PMID: 27090440 PMCID: PMC4835856 DOI: 10.1038/srep24622] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 03/30/2016] [Indexed: 11/26/2022] Open
Abstract
The recent combination of ultra-intense lasers and laser-accelerated electron beams is enabling the development of a new generation of compact x-ray light sources, the coherence of which depends directly on electron beam emittance. Although the emittance of accelerated electron beams can be low, it can grow due to the effects of space charge during free-space propagation. Direct experimental measurement of this important property is complicated by micron-scale beam sizes, and the presence of intense fields at the location where space charge acts. Reported here is a novel, non-destructive, single-shot method that overcame this problem. It employed an intense laser probe pulse, and spectroscopic imaging of the inverse-Compton scattered x-rays, allowing measurement of an ultra-low value for the normalized transverse emittance, 0.15 (±0.06) π mm mrad, as well as study of its subsequent growth upon exiting the accelerator. The technique and results are critical for designing multi-stage laser-wakefield accelerators, and generating high-brightness, spatially coherent x-rays.
Collapse
Affiliation(s)
- G. Golovin
- Department of Physics and Astronomy, University of Nebraska, Lincoln NE 68588, USA
| | - S. Banerjee
- Department of Physics and Astronomy, University of Nebraska, Lincoln NE 68588, USA
| | - C. Liu
- Department of Physics and Astronomy, University of Nebraska, Lincoln NE 68588, USA
| | - S. Chen
- Department of Physics and Astronomy, University of Nebraska, Lincoln NE 68588, USA
| | - J. Zhang
- Department of Physics and Astronomy, University of Nebraska, Lincoln NE 68588, USA
| | - B. Zhao
- Department of Physics and Astronomy, University of Nebraska, Lincoln NE 68588, USA
| | - P. Zhang
- Department of Physics and Astronomy, University of Nebraska, Lincoln NE 68588, USA
| | - M. Veale
- Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science & Innovation Campus, Didcot OX11 0QX, UK
| | - M. Wilson
- Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science & Innovation Campus, Didcot OX11 0QX, UK
| | - P. Seller
- Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science & Innovation Campus, Didcot OX11 0QX, UK
| | - D. Umstadter
- Department of Physics and Astronomy, University of Nebraska, Lincoln NE 68588, USA
| |
Collapse
|
30
|
Corvan DJ, Dzelzainis T, Hyland C, Nersisyan G, Yeung M, Zepf M, Sarri G. Optical measurement of the temporal delay between two ultra-short and focussed laser pluses. Opt Express 2016; 24:3127-3136. [PMID: 26906877 DOI: 10.1364/oe.24.003127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Temporal overlapping of ultra-short and focussed laser pulses is a particularly challenging task, as this timescale lies orders of magnitude below the typical range of fast electronic devices. Here we present an optical technique that allows for the measurement of the temporal delay between two focussed and ultra-short laser pulses. This method is virtually applicable to any focussing geometry and relative intensity of the two lasers. Experimental implementation of this technique provides excellent quantitative agreement with theoretical expectations. The proposed technique will prove highly beneficial for high-power multiple-beam laser experiments.
Collapse
|