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2 results on '"G. R. Thomas, A."'

1. Parametric study of high-energy ring-shaped electron beams from a laser wakefield accelerator

Author

Maitrallain, A., Brunetti, E., Streeter, M., Kettle, B., Spesyvtsev, R., Vieux, G., Shazhad, M., Ersfeld, B., Yoffe, S., Kornaszewski, A., Finlay, O., Ma, Y., Albert, F., Bourgeois, N., Jd Dann, S., Lemos, N., Cipiccia, S., M. Cole, J., Gallardo González, I., Higginbotham, A., Hussein, A., (0000-0002-7162-7500) Smid, M., (0000-0001-5975-776X) Falk, K., Krushelnick, K., C. Lopes, N., Gerstmayr, E., Lumsdon, C., Lundh, O., Mangles, S., Najmudin, Z., P. Rajeev, P., Symes, D., G. R. Thomas, A., A. Jaroszynski, D., Maitrallain, A., Brunetti, E., Streeter, M., Kettle, B., Spesyvtsev, R., Vieux, G., Shazhad, M., Ersfeld, B., Yoffe, S., Kornaszewski, A., Finlay, O., Ma, Y., Albert, F., Bourgeois, N., Jd Dann, S., Lemos, N., Cipiccia, S., M. Cole, J., Gallardo González, I., Higginbotham, A., Hussein, A., (0000-0002-7162-7500) Smid, M., (0000-0001-5975-776X) Falk, K., Krushelnick, K., C. Lopes, N., Gerstmayr, E., Lumsdon, C., Lundh, O., Mangles, S., Najmudin, Z., P. Rajeev, P., Symes, D., G. R. Thomas, A., and A. Jaroszynski, D.

Abstract

Laser wakefield accelerators commonly produce on-axis, low-divergence, high-energy electron beams. However, a high charge, annular shaped beam can be trapped outside the bubble and accelerated to high energies. Here we present a parametric study on the production of low-energy-spread, ultra-relativistic electron ring beams in a two-stage gas cell. Ring-shaped beams with energies higher than 750 MeV are observed simultaneously with on axis, continuously injected electrons. Often multiple ring shaped beams with different energies are produced and parametric studies to control the generation and properties of these structures were conducted. Particle tracking and particle-in-cell simulations are used to determine properties of these beams and investigate how they are formed and trapped outside the bubble by the wake produced by on-axis injected electrons. These unusual femtosecond duration, high-charge, high-energy, ring electron beams may find use in beam driven plasma wakefield accelerators and radiation sources.

Published
2022

2. 2020 roadmap on plasma accelerators

Author

F´elicie, Albert, E Couprie, M, Debus, Alexander, C Downer, Mike, J´erôme, Faure, Flacco, Alessandro, A Gizzi, Leonida, Thomas Grismayer, Huebl, Axel, Joshi, Chan, Labat, M, P Leemans, Wim, R Maier, Andreas, P D Mangles, Stuart, Mason, Paul, François, Mathieu, Muggli, Patric, Mamiko, Nishiuchi, Osterhoff, Jens, P Rajeev, P, Ulrich Schramm, Jörg, Schreiber, G R Thomas, Alec, Jean-Luc, Vay, Vranic, Marija, Zeil, Karl, F´elicie, Albert, E Couprie, M, Debus, Alexander, C Downer, Mike, J´erôme, Faure, Flacco, Alessandro, A Gizzi, Leonida, Thomas Grismayer, Huebl, Axel, Joshi, Chan, Labat, M, P Leemans, Wim, R Maier, Andreas, P D Mangles, Stuart, Mason, Paul, François, Mathieu, Muggli, Patric, Mamiko, Nishiuchi, Osterhoff, Jens, P Rajeev, P, Ulrich Schramm, Jörg, Schreiber, G R Thomas, Alec, Jean-Luc, Vay, Vranic, Marija, and Zeil, Karl

Abstract

Plasma-based accelerators use the strong electromagnetic fields that can be supported by plasmas to accelerate charged particles to high energies. Accelerating field structures in plasma can be generated by powerful laser pulses or charged particle beams. This research field has recently transitioned from involving a few small-scale efforts to the development of national and international networks of scientists supported by substantial investment in large-scale research infrastructure. In this New Journal of Physics 2020 Plasma Accelerator Roadmap, perspectives from experts in this field provide a summary overview of the field and insights into the research needs and developments for an international audience of scientists, including graduate students and researchers entering the field.

Published
2021

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