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Acceleration of relativistic beams using laser-generated terahertz pulses
Particle accelerators driven by laser-generated terahertz (THz) pulses promise unprecedented control over the energy–time phase space of particle bunches compared with conventional radiofrequency technology. Here we demonstrate acceleration of a relativistic electron beam in a THz-driven linear acce...
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| Published in: | Nature photonics 2020-12, Vol.14 (12), p.755-759 |
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| creator | Hibberd, Morgan T. Healy, Alisa L. Lake, Daniel S. Georgiadis, Vasileios Smith, Elliott J. H. Finlay, Oliver J. Pacey, Thomas H. Jones, James K. Saveliev, Yuri Walsh, David A. Snedden, Edward W. Appleby, Robert B. Burt, Graeme Graham, Darren M. Jamison, Steven P. |
| description | Particle accelerators driven by laser-generated terahertz (THz) pulses promise unprecedented control over the energy–time phase space of particle bunches compared with conventional radiofrequency technology. Here we demonstrate acceleration of a relativistic electron beam in a THz-driven linear accelerator. Narrowband THz pulses were tuned to the phase-velocity-matched operating frequency of a rectangular dielectric-lined waveguide for extended collinear interaction with 35 MeV, 60 pC electron bunches, imparting multicycle energy modulation to chirped (6 ps) bunches and injection phase-dependent energy gain (up to 10 keV) to subcycle (2 ps) bunches. These proof-of-principle results establish a route to whole-bunch linear acceleration of subpicosecond particle beams, directly applicable to scaled-up and multistaged concepts capable of preserving beam quality, thus marking a key milestone for future THz-driven acceleration of relativistic beams.
Relativistic 35 MeV electron bunches with charges of 60 pC are accelerated in a terahertz-wave-driven dielectric waveguide. When the terahertz pulse energy is 0.8 μJ, an accelerating gradient of 2 MeV m
−1
and energy gain of 10 keV are achieved. |
| doi_str_mv | 10.1038/s41566-020-0674-1 |
| format | article |
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Relativistic 35 MeV electron bunches with charges of 60 pC are accelerated in a terahertz-wave-driven dielectric waveguide. When the terahertz pulse energy is 0.8 μJ, an accelerating gradient of 2 MeV m
−1
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Relativistic 35 MeV electron bunches with charges of 60 pC are accelerated in a terahertz-wave-driven dielectric waveguide. When the terahertz pulse energy is 0.8 μJ, an accelerating gradient of 2 MeV m
−1
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H.</au><au>Finlay, Oliver J.</au><au>Pacey, Thomas H.</au><au>Jones, James K.</au><au>Saveliev, Yuri</au><au>Walsh, David A.</au><au>Snedden, Edward W.</au><au>Appleby, Robert B.</au><au>Burt, Graeme</au><au>Graham, Darren M.</au><au>Jamison, Steven P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Acceleration of relativistic beams using laser-generated terahertz pulses</atitle><jtitle>Nature photonics</jtitle><stitle>Nat. Photonics</stitle><date>2020-12-01</date><risdate>2020</risdate><volume>14</volume><issue>12</issue><spage>755</spage><epage>759</epage><pages>755-759</pages><issn>1749-4885</issn><eissn>1749-4893</eissn><abstract>Particle accelerators driven by laser-generated terahertz (THz) pulses promise unprecedented control over the energy–time phase space of particle bunches compared with conventional radiofrequency technology. Here we demonstrate acceleration of a relativistic electron beam in a THz-driven linear accelerator. Narrowband THz pulses were tuned to the phase-velocity-matched operating frequency of a rectangular dielectric-lined waveguide for extended collinear interaction with 35 MeV, 60 pC electron bunches, imparting multicycle energy modulation to chirped (6 ps) bunches and injection phase-dependent energy gain (up to 10 keV) to subcycle (2 ps) bunches. These proof-of-principle results establish a route to whole-bunch linear acceleration of subpicosecond particle beams, directly applicable to scaled-up and multistaged concepts capable of preserving beam quality, thus marking a key milestone for future THz-driven acceleration of relativistic beams.
Relativistic 35 MeV electron bunches with charges of 60 pC are accelerated in a terahertz-wave-driven dielectric waveguide. When the terahertz pulse energy is 0.8 μJ, an accelerating gradient of 2 MeV m
−1
and energy gain of 10 keV are achieved.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><doi>10.1038/s41566-020-0674-1</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0001-8288-1216</orcidid><orcidid>https://orcid.org/0000-0002-5246-7476</orcidid><orcidid>https://orcid.org/0000-0002-0768-9299</orcidid><orcidid>https://orcid.org/0000-0003-3510-6721</orcidid><orcidid>https://orcid.org/0000-0001-9734-0543</orcidid><orcidid>https://orcid.org/0000-0002-3691-2541</orcidid><orcidid>https://orcid.org/0000-0002-4240-5888</orcidid><orcidid>https://orcid.org/0000-0001-6234-9943</orcidid><orcidid>https://orcid.org/0000-0001-8033-1923</orcidid><orcidid>https://orcid.org/0000-0001-6529-2620</orcidid><orcidid>https://orcid.org/0000-0001-7213-580X</orcidid></addata></record> |
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| subjects | 639/624/399 639/766/400 Acceleration Applied and Technical Physics Dielectric waveguides Electrons Energy Laser beams Narrowband Particle accelerators Particle beams Phase matching Physics Physics and Astronomy Quantum Physics Radio frequency Relativistic effects Relativistic electron beams Terahertz frequencies |
| title | Acceleration of relativistic beams using laser-generated terahertz pulses |
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