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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...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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American Association for the Advancement of Science
2020
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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. |
format | Online Article Text |
id | pubmed-7259925 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
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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