Resonant excitation of plasma waves in a plasma channel
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arXiv
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| Autori principali: | , , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| author | Ross, Aimee J. Chappell, James van de Wetering, Johannes J. Cowley, James Archer, Emily Bourgeois, Nicolas Corner, Laura Emerson, David R. Feder, Linus Gu, Xiao J. Jakobsson, Oscar Jones, Harry Picksley, Alexander Reid, Linus Wang, Wei-Ting Walczak, Roman Hooker, Simon M. |
| author_facet | Ross, Aimee J. Chappell, James van de Wetering, Johannes J. Cowley, James Archer, Emily Bourgeois, Nicolas Corner, Laura Emerson, David R. Feder, Linus Gu, Xiao J. Jakobsson, Oscar Jones, Harry Picksley, Alexander Reid, Linus Wang, Wei-Ting Walczak, Roman Hooker, Simon M. |
| contents | We demonstrate resonant excitation of a plasma wave by a train of short laser pulses guided in a pre-formed plasma channel, for parameters relevant to a plasma-modulated plasma accelerator (P-MoPA). We show experimentally that a train of $N \approx 10$ short pulses, of total energy $\sim 1$ J, can be guided through $110$ mm long plasma channels with on-axis densities in the range $10^{17} - 10^{18}$ cm$^{-3}$. The spectrum of the transmitted train is found to be strongly red-shifted when the plasma period is tuned to the intra-train pulse spacing. Numerical simulations are found to be in excellent agreement with the measurements and indicate that the resonantly excited plasma waves have an amplitude in the range $3$ - $10$ GV m$^{-1}$, corresponding to an accelerator stage energy gain of order $1$ GeV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_05097 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Resonant excitation of plasma waves in a plasma channel Ross, Aimee J. Chappell, James van de Wetering, Johannes J. Cowley, James Archer, Emily Bourgeois, Nicolas Corner, Laura Emerson, David R. Feder, Linus Gu, Xiao J. Jakobsson, Oscar Jones, Harry Picksley, Alexander Reid, Linus Wang, Wei-Ting Walczak, Roman Hooker, Simon M. Accelerator Physics Plasma Physics We demonstrate resonant excitation of a plasma wave by a train of short laser pulses guided in a pre-formed plasma channel, for parameters relevant to a plasma-modulated plasma accelerator (P-MoPA). We show experimentally that a train of $N \approx 10$ short pulses, of total energy $\sim 1$ J, can be guided through $110$ mm long plasma channels with on-axis densities in the range $10^{17} - 10^{18}$ cm$^{-3}$. The spectrum of the transmitted train is found to be strongly red-shifted when the plasma period is tuned to the intra-train pulse spacing. Numerical simulations are found to be in excellent agreement with the measurements and indicate that the resonantly excited plasma waves have an amplitude in the range $3$ - $10$ GV m$^{-1}$, corresponding to an accelerator stage energy gain of order $1$ GeV. |
| title | Resonant excitation of plasma waves in a plasma channel |
| topic | Accelerator Physics Plasma Physics |
| url | https://arxiv.org/abs/2310.05097 |