Density-transition based electron injector for laser driven wakefield accelerators
By K. Schmid, A. Buck, C. Sears, J. Mikhailova, R. Tautz, D. Herrmann, M. Geissler, F. Krausz, L. Veisz. 2010
252 citations recorded by the source corpus.
We demonstrate a laser wakefield accelerator with a novel electron injection scheme resulting in enhanced stability, reproducibility, and ease of use. In order to inject electrons into the accelerating phase of the plasma wave, a sharp downward density transition is employed. Prior to ionization by the laser pulse this transition is formed by a shock front induced by a knife edge inserted into a supersonic gas jet. With laser pulses of 8 fs duration and with only 65 mJ energy on target, the accelerator produces a monoenergetic electron beam with tunable energy between 15 and 25 MeVand on average 3.3 pC charge per electron bunch. The shock-front injector is a simple and powerful new tool to enhance the reproducibility of laser-driven electron accelerators, is easily adapted to different laser parameters, and should therefore allow scaling to the energy range of several hundred MeV.
Subfields: Atomic and Molecular Physics, and Optics, Mechanics of Materials, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/47b887d81963262d58ceb722e17ff7d8943ec21e
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Citations in the corpus
- Diagnostics for plasma-based electron accelerators (2018, background): “Later (Buck et al., 2013; Schmid et al., 2010) introduced a more abrupt downramp of scale length < λp (Fig.”
- Developments in laser-driven plasma accelerators (2013, background): “A wide range of ideas are being explored, including: the use of additional laser pulses [78, 79]; slowing the plasma wakefield with a region of decreasing plasma density [44, 80–83]; introducing an abrupt jump in the plasma density [84, 85]; and ionization of species doped into the plasma [51, 86–89”
- Experimental Evidence of Radiation Reaction in the Collision of a High-Intensity Laser Pulse with a Laser-Wakefield Accelerated Electron Beam (2017, unknown): “This would imply that the high-energy component was generated by self-injection [36] and that the low-energy component was injected at an abrupt density transition [37].”
- Tunable laser plasma accelerator based on longitudinal density tailoring (2011, background): “2 (b-f) compared with 5− 11mrad beams produced with other state-of-the-art injection techniques [14, 20].”
- Applications of laser wakefield accelerator-based light sources (2016, background): “For example, all optical injection [50, 51, 52, 53, 29, 54], demonstrates the most control of the phase space distribution [55, 56, 57], while the use of density transitions [58], has demonstrated outstanding stability in experiments [59, 60, 61, 62, 63].”