1
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Liu S, Li F, Zhou S, Hua J, Mori WB, Joshi C, Lu W. A Scalable, High-Efficiency, Low-Energy-Spread Laser Wakefield Accelerator Using a Tri-Plateau Plasma Channel. RESEARCH (WASHINGTON, D.C.) 2024; 7:0396. [PMID: 39099804 PMCID: PMC11298259 DOI: 10.34133/research.0396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 05/07/2024] [Indexed: 08/06/2024]
Abstract
The emergence of multi-petawatt laser facilities is expected to push forward the maximum energy gain that can be achieved in a single stage of a laser wakefield acceleration (LWFA) to tens of giga-electron volts, which begs the question-is it likely to impact particle physics by providing a truly compact particle collider? Colliders have very stringent requirements on beam energy, acceleration efficiency, and beam quality. In this article, we propose an LWFA scheme that can for the first time simultaneously achieve hitherto unrealized acceleration efficiency from the laser to the electron beam of >20% and a sub-1% energy spread using a stepwise plasma structure and a nonlinearly chirped laser pulse. Three-dimensional high-fidelity simulations show that the nonlinear chirp can effectively mitigate the laser waveform distortion and lengthen the acceleration distance. This, combined with an interstage rephasing process in the stepwise plasma, can triple the beam energy gain compared to that in a uniform plasma for a fixed laser energy, thereby dramatically increasing the efficiency. A dynamic beam loading effect can almost perfectly cancel the energy chirp that arises during the acceleration, leading to the sub-percent energy spread. This scheme is highly scalable and can be applied to petawatt LWFA scenarios. Scaling laws are obtained, which suggest that electron beams with parameters relevant for a Higgs factory could be reached with the proposed high-efficiency, low-energy-spread scheme.
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Affiliation(s)
- Shuang Liu
- Department of Engineering Physics,
Tsinghua University, Beijing 100084, China
| | - Fei Li
- Department of Engineering Physics,
Tsinghua University, Beijing 100084, China
| | - Shiyu Zhou
- Department of Engineering Physics,
Tsinghua University, Beijing 100084, China
| | - Jianfei Hua
- Department of Engineering Physics,
Tsinghua University, Beijing 100084, China
| | - Warren B. Mori
- University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Chan Joshi
- University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Wei Lu
- Department of Engineering Physics,
Tsinghua University, Beijing 100084, China
- Institute of High Energy Physics,
Chinese Academy of Sciences, Beijing 100049, China
- Beijing Academy of Quantum Information Science, Beijing 100193, China
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2
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Habib AF, Manahan GG, Scherkl P, Heinemann T, Sutherland A, Altuiri R, Alotaibi BM, Litos M, Cary J, Raubenheimer T, Hemsing E, Hogan MJ, Rosenzweig JB, Williams PH, McNeil BWJ, Hidding B. Attosecond-Angstrom free-electron-laser towards the cold beam limit. Nat Commun 2023; 14:1054. [PMID: 36828817 PMCID: PMC9958197 DOI: 10.1038/s41467-023-36592-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 02/08/2023] [Indexed: 02/26/2023] Open
Abstract
Electron beam quality is paramount for X-ray pulse production in free-electron-lasers (FELs). State-of-the-art linear accelerators (linacs) can deliver multi-GeV electron beams with sufficient quality for hard X-ray-FELs, albeit requiring km-scale setups, whereas plasma-based accelerators can produce multi-GeV electron beams on metre-scale distances, and begin to reach beam qualities sufficient for EUV FELs. Here we show, that electron beams from plasma photocathodes many orders of magnitude brighter than state-of-the-art can be generated in plasma wakefield accelerators (PWFAs), and then extracted, captured, transported and injected into undulators without significant quality loss. These ultrabright, sub-femtosecond electron beams can drive hard X-FELs near the cold beam limit to generate coherent X-ray pulses of attosecond-Angstrom class, reaching saturation after only 10 metres of undulator. This plasma-X-FEL opens pathways for advanced photon science capabilities, such as unperturbed observation of electronic motion inside atoms at their natural time and length scale, and towards higher photon energies.
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Affiliation(s)
- A. F. Habib
- grid.11984.350000000121138138Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow, UK ,grid.450757.40000 0004 6085 4374The Cockcroft Institute, Daresbury, UK
| | - G. G. Manahan
- grid.11984.350000000121138138Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow, UK ,grid.450757.40000 0004 6085 4374The Cockcroft Institute, Daresbury, UK
| | - P. Scherkl
- grid.11984.350000000121138138Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow, UK ,grid.450757.40000 0004 6085 4374The Cockcroft Institute, Daresbury, UK ,grid.9026.d0000 0001 2287 2617University Medical Center Hamburg-Eppendorf, University of Hamburg, 20246 Hamburg, Germany
| | - T. Heinemann
- grid.11984.350000000121138138Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow, UK ,grid.450757.40000 0004 6085 4374The Cockcroft Institute, Daresbury, UK
| | - A. Sutherland
- grid.11984.350000000121138138Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow, UK ,grid.450757.40000 0004 6085 4374The Cockcroft Institute, Daresbury, UK
| | - R. Altuiri
- grid.11984.350000000121138138Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow, UK ,grid.449346.80000 0004 0501 7602Physics Department, Princess Nourah Bint Abdulrahman University, Riyadh, Kingdom of Saudi Arabia
| | - B. M. Alotaibi
- grid.11984.350000000121138138Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow, UK ,grid.449346.80000 0004 0501 7602Physics Department, Princess Nourah Bint Abdulrahman University, Riyadh, Kingdom of Saudi Arabia
| | - M. Litos
- grid.266190.a0000000096214564Department of Physics, Center for Integrated Plasma Studies, University of Colorado, Boulder, CO USA
| | - J. Cary
- grid.266190.a0000000096214564Department of Physics, Center for Integrated Plasma Studies, University of Colorado, Boulder, CO USA ,grid.448325.c0000 0004 0556 1325Tech-X Corporation, Boulder, USA
| | - T. Raubenheimer
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - E. Hemsing
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - M. J. Hogan
- grid.445003.60000 0001 0725 7771SLAC National Accelerator Laboratory, Menlo Park, CA USA
| | - J. B. Rosenzweig
- grid.19006.3e0000 0000 9632 6718Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, CA USA
| | - P. H. Williams
- grid.450757.40000 0004 6085 4374The Cockcroft Institute, Daresbury, UK ,grid.482271.a0000 0001 0727 2226ASTeC, STFC Daresbury Laboratory, Warrington, UK
| | - B. W. J. McNeil
- grid.11984.350000000121138138Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow, UK ,grid.450757.40000 0004 6085 4374The Cockcroft Institute, Daresbury, UK
| | - B. Hidding
- grid.11984.350000000121138138Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow, UK ,grid.450757.40000 0004 6085 4374The Cockcroft Institute, Daresbury, UK ,grid.411327.20000 0001 2176 9917Institute for Laser and Plasma Physics, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
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3
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Ferran Pousa A, Agapov I, Antipov SA, Assmann RW, Brinkmann R, Jalas S, Kirchen M, Leemans WP, Maier AR, Martinez de la Ossa A, Osterhoff J, Thévenet M. Energy Compression and Stabilization of Laser-Plasma Accelerators. PHYSICAL REVIEW LETTERS 2022; 129:094801. [PMID: 36083652 DOI: 10.1103/physrevlett.129.094801] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 05/06/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Laser-plasma accelerators outperform current radio frequency technology in acceleration strength by orders of magnitude. Yet, enabling them to deliver competitive beam quality for demanding applications, particularly in terms of energy spread and stability, remains a major challenge. In this Letter, we propose to combine bunch decompression and active plasma dechirping for drastically improving the energy profile and stability of beams from laser-plasma accelerators. Realistic start-to-end simulations demonstrate the potential of these postacceleration phase-space manipulations for simultaneously reducing an initial energy spread and energy jitter of ∼1-2% to ≲0.1%, closing the beam-quality gap to conventional acceleration schemes.
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Affiliation(s)
- A Ferran Pousa
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - I Agapov
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - S A Antipov
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - R W Assmann
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
- Laboratori Nazionali di Frascati, Via Enrico Fermi 40, 00044 Frascati, Italy
| | - R Brinkmann
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - S Jalas
- Department of Physics Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - M Kirchen
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - W P Leemans
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
- Department of Physics Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - A R Maier
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | | | - J Osterhoff
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - M Thévenet
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
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4
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Review of Quality Optimization of Electron Beam Based on Laser Wakefield Acceleration. PHOTONICS 2022. [DOI: 10.3390/photonics9080511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Compared with state-of-the-art radio frequency accelerators, the gradient of laser wakefield accelerators is 3–4 orders of magnitude higher. This is of great significance in the development of miniaturized particle accelerators and radiation sources. Higher requirements have been proposed for the quality of electron beams, owing to the increasing application requirements of tabletop radiation sources, specifically with the rapid development of free-electron laser devices. This review briefly examines the electron beam quality optimization scheme based on laser wakefield acceleration and presents some representative studies. In addition, manipulation of the electron beam phase space by means of injection, plasma profile distribution, and laser evolution is described. This review of studies is beneficial for further promoting the application of laser wakefield accelerators.
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5
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Boyle GJ, Thévenet M, Chappell J, Garland JM, Loisch G, Osterhoff J, D'Arcy R. Reduced model of plasma evolution in hydrogen discharge capillary plasmas. Phys Rev E 2021; 104:015211. [PMID: 34412295 DOI: 10.1103/physreve.104.015211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 06/23/2021] [Indexed: 11/07/2022]
Abstract
A model describing the evolution of the average plasma temperature inside a discharge capillary device including Ohmic heating, heat loss to the capillary wall, and ionization and recombination effects is developed. Key to this approach is an analytic quasistatic description of the radial temperature variation which, under local thermal equilibrium conditions, allows the radial behavior of both the plasma temperature and the electron density to be specified directly from the average temperature evolution. In this way, the standard set of coupled partial differential equations for magnetohydrodynamic (MHD) simulations is replaced by a single ordinary differential equation, with a corresponding gain in simplicity and computational efficiency. The on-axis plasma temperature and electron density calculations are benchmarked against existing one-dimensional MHD simulations for hydrogen plasmas under a range of discharge conditions and initial gas pressures, and good agreement is demonstrated. The success of this simple model indicates that it can serve as a quick and easy tool for evaluating the plasma conditions in discharge capillary devices, particularly for computationally expensive applications such as simulating long-term plasma evolution, performing detailed input parameter scans, or for optimization using machine-learning techniques.
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Affiliation(s)
- G J Boyle
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - M Thévenet
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - J Chappell
- University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - J M Garland
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - G Loisch
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - J Osterhoff
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - R D'Arcy
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
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6
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Ke LT, Feng K, Wang WT, Qin ZY, Yu CH, Wu Y, Chen Y, Qi R, Zhang ZJ, Xu Y, Yang XJ, Leng YX, Liu JS, Li RX, Xu ZZ. Near-GeV Electron Beams at a Few Per-Mille Level from a Laser Wakefield Accelerator via Density-Tailored Plasma. PHYSICAL REVIEW LETTERS 2021; 126:214801. [PMID: 34114880 DOI: 10.1103/physrevlett.126.214801] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 03/18/2021] [Accepted: 04/28/2021] [Indexed: 06/12/2023]
Abstract
A simple, efficient scheme was developed to obtain near-gigaelectronvolt electron beams with energy spreads of few per-mille level in a single-stage laser wakefield accelerator. Longitudinal plasma density was tailored to control relativistic laser-beam evolution, resulting in injection, dechirping, and a quasi-phase-stable acceleration. With this scheme, electron beams with peak energies of 780-840 MeV, rms energy spreads of 2.4‰-4.1‰, charges of 8.5-23.6 pC, and rms divergences of 0.1-0.4 mrad were experimentally obtained. Quasi-three-dimensional particle-in-cell simulations agreed well with the experimental results. The dechirping strength was estimated to reach up to 11 TeV/mm/m, which is higher than previously obtained results. Such high-quality electron beams will boost the development of compact intense coherent radiation sources and x-ray free-electron lasers.
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Affiliation(s)
- L T Ke
- State Key Laboratory of High Field Laser Physics and 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
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - K Feng
- State Key Laboratory of High Field Laser Physics and 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
| | - W T Wang
- State Key Laboratory of High Field Laser Physics and 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
| | - Z Y Qin
- Department of Physics, Shanghai Normal University, Shanghai 200234, People's Republic of China
| | - C H Yu
- Department of Physics, Shanghai Normal University, Shanghai 200234, People's Republic of China
| | - Y Wu
- State Key Laboratory of High Field Laser Physics and 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
| | - Y Chen
- State Key Laboratory of High Field Laser Physics and 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
| | - R Qi
- State Key Laboratory of High Field Laser Physics and 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
| | - Z J Zhang
- Department of Physics, Shanghai Normal University, Shanghai 200234, People's Republic of China
| | - Y Xu
- State Key Laboratory of High Field Laser Physics and 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
| | - X J Yang
- State Key Laboratory of High Field Laser Physics and 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
| | - Y X Leng
- State Key Laboratory of High Field Laser Physics and 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
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 200031, People's Republic of China
| | - J S Liu
- State Key Laboratory of High Field Laser Physics and 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, People's Republic of China
| | - R X Li
- State Key Laboratory of High Field Laser Physics and 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
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 200031, People's Republic of China
| | - Z Z Xu
- State Key Laboratory of High Field Laser Physics and 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
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 200031, People's Republic of China
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7
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Huang N, Deng H, Liu B, Wang D, Zhao Z. Features and futures of X-ray free-electron lasers. ACTA ACUST UNITED AC 2021; 2:100097. [PMID: 34557749 PMCID: PMC8454599 DOI: 10.1016/j.xinn.2021.100097] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 03/14/2021] [Indexed: 11/18/2022]
Abstract
Linear accelerator-based free-electron lasers (FELs) are the leading source of fully coherent X-rays with ultra-high peak powers and ultra-short pulse lengths. Current X-ray FEL facilities have proved their worth as useful tools for diverse scientific applications. In this paper, we present an overview of the features and future prospects of X-ray FELs, including the working principles and properties of X-ray FELs, the operational status of different FEL facilities worldwide, the applications supported by such facilities, and the current developments and outlook for X-ray FEL-based research. X-ray free-electron lasers (XFELs) generate X-ray by electrons flying through a periodic magnetic field. XFELs are the leading X-ray sources with ultra-high brightness and ultra-short duration. XFELs can be launched from either the shot noise of the electron beam or the seed. XFEL-laser collision is proposed to learn the nature of vacuum at SHINE. XFELs are being combined with intense lasers and synchrotron radiation light sources.
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Affiliation(s)
- Nanshun Huang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haixiao Deng
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
- Corresponding author
| | - Bo Liu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Dong Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Zhentang Zhao
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
- Corresponding author
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8
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Lindstrøm CA, Garland JM, Schröder S, Boulton L, Boyle G, Chappell J, D'Arcy R, Gonzalez P, Knetsch A, Libov V, Loisch G, Martinez de la Ossa A, Niknejadi P, Põder K, Schaper L, Schmidt B, Sheeran B, Wesch S, Wood J, Osterhoff J. Energy-Spread Preservation and High Efficiency in a Plasma-Wakefield Accelerator. PHYSICAL REVIEW LETTERS 2021; 126:014801. [PMID: 33480753 DOI: 10.1103/physrevlett.126.014801] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 11/05/2020] [Accepted: 12/08/2020] [Indexed: 06/12/2023]
Abstract
Energy-efficient plasma-wakefield acceleration of particle bunches with low energy spread is a promising path to realizing compact free-electron lasers and particle colliders. High efficiency and low energy spread can be achieved simultaneously by strong beam loading of plasma wakefields when accelerating bunches with carefully tailored current profiles [M. Tzoufras et al., Phys. Rev. Lett. 101, 145002 (2008)PRLTAO0031-900710.1103/PhysRevLett.101.145002]. We experimentally demonstrate such optimal beam loading in a nonlinear electron-driven plasma accelerator. Bunches with an initial energy of 1 GeV were accelerated by 45 MeV with an energy-transfer efficiency of (42±4)% at a gradient of 1.3 GV/m while preserving per-mille energy spreads with full charge coupling, demonstrating wakefield flattening at the few-percent level.
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Affiliation(s)
- C A Lindstrøm
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - J M Garland
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - S Schröder
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - L Boulton
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- SUPA, Department of Physics, University of Strathclyde, Glasgow, United Kingdom
- The Cockcroft Institute, Daresbury, United Kingdom
| | - G Boyle
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - J Chappell
- University College London, London, United Kingdom
| | - R D'Arcy
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - P Gonzalez
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - A Knetsch
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - V Libov
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - G Loisch
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | | | - P Niknejadi
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - K Põder
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - L Schaper
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - B Schmidt
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - B Sheeran
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
- Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - S Wesch
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - J Wood
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - J Osterhoff
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
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9
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Ferran Pousa A, Martinez de la Ossa A, Assmann RW. Intrinsic energy spread and bunch length growth in plasma-based accelerators due to betatron motion. Sci Rep 2019; 9:17690. [PMID: 31776391 PMCID: PMC6881450 DOI: 10.1038/s41598-019-53887-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 10/28/2019] [Indexed: 11/19/2022] Open
Abstract
Plasma-based accelerators (PBAs), having demonstrated the production of GeV electron beams in only centimetre scales, offer a path towards a new generation of highly compact and cost-effective particle accelerators. However, achieving the required beam quality, particularly on the energy spread for applications such as free-electron lasers, remains a challenge. Here we investigate fundamental sources of energy spread and bunch length in PBAs which arise from the betatron motion of beam electrons. We present an analytical theory, validated against particle-in-cell simulations, which accurately describes these phenomena. Significant impact on the beam quality is predicted for certain configurations, explaining previously observed limitations on the achievable bunch length and energy spread. Guidelines for mitigating these contributions towards high-quality beams are deduced.
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Affiliation(s)
- Angel Ferran Pousa
- Deutsches Elektronen-Synchrotron DESY, Hamburg, 22607, Germany.
- Institut für Experimentalphysik, Universität Hamburg, Hamburg, 22761, Germany.
| | | | - Ralph W Assmann
- Deutsches Elektronen-Synchrotron DESY, Hamburg, 22607, Germany
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10
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Ferran Pousa A, Martinez de la Ossa A, Brinkmann R, Assmann RW. Compact Multistage Plasma-Based Accelerator Design for Correlated Energy Spread Compensation. PHYSICAL REVIEW LETTERS 2019; 123:054801. [PMID: 31491304 DOI: 10.1103/physrevlett.123.054801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 06/10/2019] [Indexed: 06/10/2023]
Abstract
The extreme electromagnetic fields sustained by plasma-based accelerators could drastically reduce the size and cost of future accelerator facilities. However, they are also an inherent source of correlated energy spread in the produced beams, which severely limits the usability of these devices. We propose here to split the acceleration process into two plasma stages joined by a magnetic chicane in which the energy correlation induced in the first stage is inverted such that it can be naturally compensated in the second. Simulations of a particular 1.5-m-long setup show that 5.5 GeV beams with relative energy spreads of 1.2×10^{-3} (total) and 2.8×10^{-4} (slice) could be achieved while preserving a submicron emittance. This is at least one order of magnitude below the current state of the art and would enable applications such as compact free-electron lasers.
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Affiliation(s)
- A Ferran Pousa
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
- Institut für Experimentalphysik, Universität Hamburg, 22761 Hamburg, Germany
| | | | - R Brinkmann
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - R W Assmann
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
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