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Gadjev I, Sudar N, Babzien M, Duris J, Hoang P, Fedurin M, Kusche K, Malone R, Musumeci P, Palmer M, Pogorelsky I, Polyanskiy M, Sakai Y, Swinson C, Williams O, Rosenzweig JB. An inverse free electron laser acceleration-driven Compton scattering X-ray source. Sci Rep 2019; 9:532. [PMID: 30679471 PMCID: PMC6345986 DOI: 10.1038/s41598-018-36423-y] [Citation(s) in RCA: 15] [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: 04/12/2018] [Accepted: 11/16/2018] [Indexed: 11/09/2022] Open
Abstract
The generation of X-rays and γ-rays based on synchrotron radiation from free electrons, emitted in magnet arrays such as undulators, forms the basis of much of modern X-ray science. This approach has the drawback of requiring very high energy, up to the multi-GeV-scale, electron beams, to obtain the required photon energy. Due to the limit in accelerating gradients in conventional particle accelerators, reaching high energy typically demands use of instruments exceeding 100’s of meters in length. Compact, less costly, monochromatic X-ray sources based on very high field acceleration and very short period undulators, however, may enable diverse, paradigm-changing X-ray applications ranging from novel X-ray therapy techniques to active interrogation of sensitive materials, by making them accessible in energy reach, cost and size. Such compactness and enhanced energy reach may be obtained by an all-optical approach, which employs a laser-driven high gradient accelerator based on inverse free electron laser (IFEL), followed by a collision point for inverse Compton scattering (ICS), a scheme where a laser is used to provide undulator fields. We present an experimental proof-of-principle of this approach, where a TW-class CO2 laser pulse is split in two, with half used to accelerate a high quality electron beam up to 84 MeV through the IFEL interaction, and the other half acts as an electromagnetic undulator to generate up to 13 keV X-rays via ICS. These results demonstrate the feasibility of this scheme, which can be joined with other techniques such as laser recirculation to yield very compact photon sources, with both high peak and average brilliance, and with energies extending from the keV to MeV scale. Further, use of the IFEL acceleration with the ICS interaction produces a train of high intensity X-ray pulses, thus enabling a unique tool synchronized with a laser pulse for ultra-fast strobe, pump-probe experimental scenarios.
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Affiliation(s)
- I Gadjev
- UCLA Department of Physics and Astronomy, 405 Hilgard Ave., Los Angeles, CA, 90095, USA.
| | - N Sudar
- UCLA Department of Physics and Astronomy, 405 Hilgard Ave., Los Angeles, CA, 90095, USA
| | - M Babzien
- Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - J Duris
- UCLA Department of Physics and Astronomy, 405 Hilgard Ave., Los Angeles, CA, 90095, USA
| | - P Hoang
- UCLA Department of Physics and Astronomy, 405 Hilgard Ave., Los Angeles, CA, 90095, USA
| | - M Fedurin
- Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - K Kusche
- Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - R Malone
- Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - P Musumeci
- UCLA Department of Physics and Astronomy, 405 Hilgard Ave., Los Angeles, CA, 90095, USA
| | - M Palmer
- Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - I Pogorelsky
- Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - M Polyanskiy
- Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Y Sakai
- UCLA Department of Physics and Astronomy, 405 Hilgard Ave., Los Angeles, CA, 90095, USA
| | - C Swinson
- Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - O Williams
- UCLA Department of Physics and Astronomy, 405 Hilgard Ave., Los Angeles, CA, 90095, USA
| | - J B Rosenzweig
- UCLA Department of Physics and Astronomy, 405 Hilgard Ave., Los Angeles, CA, 90095, USA
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Sudar N, Musumeci P, Gadjev I, Sakai Y, Fabbri S, Polyanskiy M, Pogorelsky I, Fedurin M, Swinson C, Kusche K, Babzien M, Palmer M. Demonstration of Cascaded Modulator-Chicane Microbunching of a Relativistic Electron Beam. Phys Rev Lett 2018; 120:114802. [PMID: 29601767 DOI: 10.1103/physrevlett.120.114802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Indexed: 06/08/2023]
Abstract
We present results of an experiment showing the first successful demonstration of a cascaded microbunching scheme. Two modulator-chicane prebunchers arranged in series and a high power mid-IR laser seed are used to modulate a 52 MeV electron beam into a train of sharp microbunches phase locked to the external drive laser. This configuration is shown to greatly improve matching of the beam into the small longitudinal phase space acceptance of short-wavelength accelerators. We demonstrate trapping of nearly all (96%) of the electrons in a strongly tapered inverse free-electron laser accelerator, with an order-of-magnitude reduction in injection losses compared to the classical single-buncher scheme. These results represent a critical advance in laser-based longitudinal phase space manipulations and find application in high gradient advanced acceleration as well as in high peak and average power coherent radiation sources.
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Affiliation(s)
- N Sudar
- Department of Physics and Astronomy, Particle Beam Physics Laboratory, University of California, Los Angeles, California 90095, USA
| | - P Musumeci
- Department of Physics and Astronomy, Particle Beam Physics Laboratory, University of California, Los Angeles, California 90095, USA
| | - I Gadjev
- Department of Physics and Astronomy, Particle Beam Physics Laboratory, University of California, Los Angeles, California 90095, USA
| | - Y Sakai
- Department of Physics and Astronomy, Particle Beam Physics Laboratory, University of California, Los Angeles, California 90095, USA
| | - S Fabbri
- Department of Physics and Astronomy, Particle Beam Physics Laboratory, University of California, Los Angeles, California 90095, USA
| | - M Polyanskiy
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - I Pogorelsky
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Fedurin
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Swinson
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Kusche
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Babzien
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Palmer
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
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Sudar N, Musumeci P, Duris J, Gadjev I, Polyanskiy M, Pogorelsky I, Fedurin M, Swinson C, Kusche K, Babzien M, Gover A. High Efficiency Energy Extraction from a Relativistic Electron Beam in a Strongly Tapered Undulator. Phys Rev Lett 2016; 117:174801. [PMID: 27824445 DOI: 10.1103/physrevlett.117.174801] [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: 05/03/2016] [Indexed: 06/06/2023]
Abstract
We present results of an experiment where, using a 200 GW CO_{2} laser seed, a 65 MeV electron beam was decelerated down to 35 MeV in a 54-cm-long strongly tapered helical magnetic undulator, extracting over 30% of the initial electron beam energy to coherent radiation. These results, supported by simulations of the radiation field evolution, demonstrate unparalleled electro-optical conversion efficiencies for a relativistic beam in an undulator field and represent an important step in the development of high peak and average power coherent radiation sources.
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Affiliation(s)
- N Sudar
- Particle Beam Physics Laboratory, Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA
| | - P Musumeci
- Particle Beam Physics Laboratory, Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA
| | - J Duris
- Particle Beam Physics Laboratory, Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA
| | - I Gadjev
- Particle Beam Physics Laboratory, Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA
| | - M Polyanskiy
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - I Pogorelsky
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Fedurin
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Swinson
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Kusche
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Babzien
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Gover
- Faculty of Engineering, Department of Physical Electronics, Tel-Aviv University, Tel-Aviv 69978, Israel
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Duris J, Musumeci P, Babzien M, Fedurin M, Kusche K, Li RK, Moody J, Pogorelsky I, Polyanskiy M, Rosenzweig JB, Sakai Y, Swinson C, Threlkeld E, Williams O, Yakimenko V. High-quality electron beams from a helical inverse free-electron laser accelerator. Nat Commun 2014; 5:4928. [PMID: 25222026 DOI: 10.1038/ncomms5928] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 08/08/2014] [Indexed: 11/09/2022] Open
Abstract
Compact, table-top sized accelerators are key to improving access to high-quality beams for use in industry, medicine and academic research. Among laser-based accelerating schemes, the inverse free-electron laser (IFEL) enjoys unique advantages. By using an undulator magnetic field in combination with a laser, GeV m(-1) gradients may be sustained over metre-scale distances using laser intensities several orders of magnitude less than those used in laser wake-field accelerators. Here we show for the first time the capture and high-gradient acceleration of monoenergetic electron beams from a helical IFEL. Using a modest intensity (~10(13) W cm(-2)) laser pulse and strongly tapered 0.5 m long undulator, we demonstrate >100 MV m(-1) accelerating gradient, >50 MeV energy gain and excellent output beam quality. Our results pave the way towards compact, tunable GeV IFEL accelerators for applications such as driving soft X-ray free-electron lasers and producing γ-rays by inverse Compton scattering.
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Affiliation(s)
- J Duris
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - P Musumeci
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - M Babzien
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Fedurin
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Kusche
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R K Li
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - J Moody
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - I Pogorelsky
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Polyanskiy
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J B Rosenzweig
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - Y Sakai
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - C Swinson
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - E Threlkeld
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - O Williams
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095, USA
| | - V Yakimenko
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
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