Highly-efficient electron ponderomotive acceleration in underdense plasmas
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| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| author | Martelli, Lorenzo Kononenko, Olena Andriyash, Igor Wheeler, Jonathan Gautier, Julien Goddet, Jean-Philippe Tafzi, Amar Lahaye, Ronan Giaccaglia, Camilla Flacco, Alessandro Tomkus, Vidmantas Mackevičiūtė, Migle Dudutis, Juozas Stankevic, Valdemar Gečys, Paulius Račiukaitis, Gediminas Kraft, Henri Dinh, Xuan Quyen Thaury, Cédric |
| author_facet | Martelli, Lorenzo Kononenko, Olena Andriyash, Igor Wheeler, Jonathan Gautier, Julien Goddet, Jean-Philippe Tafzi, Amar Lahaye, Ronan Giaccaglia, Camilla Flacco, Alessandro Tomkus, Vidmantas Mackevičiūtė, Migle Dudutis, Juozas Stankevic, Valdemar Gečys, Paulius Račiukaitis, Gediminas Kraft, Henri Dinh, Xuan Quyen Thaury, Cédric |
| contents | Laser-plasma accelerators represent a promising technology for future compact accelerating systems, enabling the acceleration of tens of pC to above $1\,$GeV over just a few centimeters. Nonetheless, these devices currently lack the stability, beam quality and average current of conventional systems. While many efforts have focused on improving acceleration stability and quality, little progress has been made in increasing the beam's average current, which is essential for future laser-plasma-based applications. In this paper, we investigate a laser-plasma acceleration regime aimed at increasing the beam average current with energies up to few-MeVs, efficiently enhancing the beam charge. We present experimental results on configurations that allow reaching charges of $5-30\,$nC and a maximum conversion efficiency of around $14\,$%. Through comprehensive Particle-In-Cell simulations, we interpret the experimental results and present a detailed study on electron dynamics. From our analysis, we show that most electrons are not trapped in a plasma wave; rather, they experience ponderomotive acceleration. Thus, we prove the laser pulse as the main driver of the particles' energy gain process. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2408_00560 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Highly-efficient electron ponderomotive acceleration in underdense plasmas Martelli, Lorenzo Kononenko, Olena Andriyash, Igor Wheeler, Jonathan Gautier, Julien Goddet, Jean-Philippe Tafzi, Amar Lahaye, Ronan Giaccaglia, Camilla Flacco, Alessandro Tomkus, Vidmantas Mackevičiūtė, Migle Dudutis, Juozas Stankevic, Valdemar Gečys, Paulius Račiukaitis, Gediminas Kraft, Henri Dinh, Xuan Quyen Thaury, Cédric Plasma Physics Accelerator Physics Optics Laser-plasma accelerators represent a promising technology for future compact accelerating systems, enabling the acceleration of tens of pC to above $1\,$GeV over just a few centimeters. Nonetheless, these devices currently lack the stability, beam quality and average current of conventional systems. While many efforts have focused on improving acceleration stability and quality, little progress has been made in increasing the beam's average current, which is essential for future laser-plasma-based applications. In this paper, we investigate a laser-plasma acceleration regime aimed at increasing the beam average current with energies up to few-MeVs, efficiently enhancing the beam charge. We present experimental results on configurations that allow reaching charges of $5-30\,$nC and a maximum conversion efficiency of around $14\,$%. Through comprehensive Particle-In-Cell simulations, we interpret the experimental results and present a detailed study on electron dynamics. From our analysis, we show that most electrons are not trapped in a plasma wave; rather, they experience ponderomotive acceleration. Thus, we prove the laser pulse as the main driver of the particles' energy gain process. |
| title | Highly-efficient electron ponderomotive acceleration in underdense plasmas |
| topic | Plasma Physics Accelerator Physics Optics |
| url | https://arxiv.org/abs/2408.00560 |