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Extremely brilliant GeV γ-rays from a two-stage laser-plasma accelerator

Recent developments in laser-wakefield accelerators have led to compact ultrashort X/γ-ray sources that can deliver peak brilliance comparable with conventional synchrotron sources. Such sources normally have low efficiencies and are limited to 10(7–8) photons/shot in the keV to MeV range. We presen...

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Autores principales: Zhu, Xing-Long, Chen, Min, Weng, Su-Ming, Yu, Tong-Pu, Wang, Wei-Min, He, Feng, Sheng, Zheng-Ming, McKenna, Paul, Jaroszynski, Dino A., Zhang, Jie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7259925/
https://www.ncbi.nlm.nih.gov/pubmed/32523994
http://dx.doi.org/10.1126/sciadv.aaz7240
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author Zhu, Xing-Long
Chen, Min
Weng, Su-Ming
Yu, Tong-Pu
Wang, Wei-Min
He, Feng
Sheng, Zheng-Ming
McKenna, Paul
Jaroszynski, Dino A.
Zhang, Jie
author_facet Zhu, Xing-Long
Chen, Min
Weng, Su-Ming
Yu, Tong-Pu
Wang, Wei-Min
He, Feng
Sheng, Zheng-Ming
McKenna, Paul
Jaroszynski, Dino A.
Zhang, Jie
author_sort Zhu, Xing-Long
collection PubMed
description Recent developments in laser-wakefield accelerators have led to compact ultrashort X/γ-ray sources that can deliver peak brilliance comparable with conventional synchrotron sources. Such sources normally have low efficiencies and are limited to 10(7–8) photons/shot in the keV to MeV range. We present a novel scheme to efficiently produce collimated ultrabright γ-ray beams with photon energies tunable up to GeV by focusing a multi-petawatt laser pulse into a two-stage wakefield accelerator. This high-intensity laser enables efficient generation of a multi-GeV electron beam with a high density and tens-nC charge in the first stage. Subsequently, both the laser and electron beams enter into a higher-density plasma region in the second stage. Numerical simulations demonstrate that more than 10(12) γ-ray photons/shot are produced with energy conversion efficiency above 10% for photons above 1 MeV, and the peak brilliance is above 10(26) photons s(−1) mm(−2) mrad(−2) per 0.1% bandwidth at 1 MeV. This offers new opportunities for both fundamental and applied research.
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spelling pubmed-72599252020-06-09 Extremely brilliant GeV γ-rays from a two-stage laser-plasma accelerator Zhu, Xing-Long Chen, Min Weng, Su-Ming Yu, Tong-Pu Wang, Wei-Min He, Feng Sheng, Zheng-Ming McKenna, Paul Jaroszynski, Dino A. Zhang, Jie Sci Adv Research Articles Recent developments in laser-wakefield accelerators have led to compact ultrashort X/γ-ray sources that can deliver peak brilliance comparable with conventional synchrotron sources. Such sources normally have low efficiencies and are limited to 10(7–8) photons/shot in the keV to MeV range. We present a novel scheme to efficiently produce collimated ultrabright γ-ray beams with photon energies tunable up to GeV by focusing a multi-petawatt laser pulse into a two-stage wakefield accelerator. This high-intensity laser enables efficient generation of a multi-GeV electron beam with a high density and tens-nC charge in the first stage. Subsequently, both the laser and electron beams enter into a higher-density plasma region in the second stage. Numerical simulations demonstrate that more than 10(12) γ-ray photons/shot are produced with energy conversion efficiency above 10% for photons above 1 MeV, and the peak brilliance is above 10(26) photons s(−1) mm(−2) mrad(−2) per 0.1% bandwidth at 1 MeV. This offers new opportunities for both fundamental and applied research. American Association for the Advancement of Science 2020-05-29 /pmc/articles/PMC7259925/ /pubmed/32523994 http://dx.doi.org/10.1126/sciadv.aaz7240 Text en Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Zhu, Xing-Long
Chen, Min
Weng, Su-Ming
Yu, Tong-Pu
Wang, Wei-Min
He, Feng
Sheng, Zheng-Ming
McKenna, Paul
Jaroszynski, Dino A.
Zhang, Jie
Extremely brilliant GeV γ-rays from a two-stage laser-plasma accelerator
title Extremely brilliant GeV γ-rays from a two-stage laser-plasma accelerator
title_full Extremely brilliant GeV γ-rays from a two-stage laser-plasma accelerator
title_fullStr Extremely brilliant GeV γ-rays from a two-stage laser-plasma accelerator
title_full_unstemmed Extremely brilliant GeV γ-rays from a two-stage laser-plasma accelerator
title_short Extremely brilliant GeV γ-rays from a two-stage laser-plasma accelerator
title_sort extremely brilliant gev γ-rays from a two-stage laser-plasma accelerator
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7259925/
https://www.ncbi.nlm.nih.gov/pubmed/32523994
http://dx.doi.org/10.1126/sciadv.aaz7240
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