Energy loss of a high-charge bunched electron beam in plasma: Analysis

Barov, N.; Rosenzweig, James; Thompson, M. C.; Yoder, R. B.

doi:10.1103/physrevstab.7.061301

Cited by 42 publications

(57 citation statements)

References 15 publications

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“…On the other hand, until recently the plasma dynamics of the PWFA blowout regime, with their extreme nonlinearity, have been only qualitatively understood, mainly through both fluid and particle-in-cell (PIC) simulations [3,7,8]. The companion work [2] to this paper has made progress in moving toward an analytical understanding of the plasma response to very large beam charges.…”

Section: Introductionmentioning

confidence: 99%

“…To make a comparison to the analysis of Ref. [2], we adopt here the normalized notation employed in that work. All time intervals in the analysis are normalized to !…”

Section: Introductionmentioning

confidence: 99%

“…The first is to show that the assertion of a linear relationship between the exciting beam charge and the amplitude of the excited wakefields previously deduced from simulations does not hold when the charge is high enough. The second is to explore the implications of the approach to understanding the physics of the PWFA in the very nonlinear regime suggested by recent analytical work by Barov et al [2] that examines a limit of this regime, that of an infinitesimally short (rms bunch length z ! 0) driving beam.…”

Section: Introductionmentioning

confidence: 99%

“…[2] is concerned with only the energy loss of an infinitesimally short beam. In the course of this analysis, a normalized charge was defined which delineates, as it approaches and then exceeds unity, when one should expect nonlinear effects.…”

Section: Introductionmentioning

confidence: 99%

“…In the past decade, work on the PWFA has concentrated on extending the PWFA from the linear regime [1,2], where the plasma oscillations can be considered small perturbations about an equilibrium, to the highly nonlinear ''blowout'' regime [3]. In the blowout regime, the plasma response to a beam that is much denser than the ambient plasma is violently nonlinear, as the plasma electrons are ejected from the path of the intense driving electron beam, resulting in an electron-rarefied region.…”

Section: Introductionmentioning

confidence: 99%

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Energy loss of a high charge bunched electron beam in plasma: Simulations, scaling, and accelerating wakefields

Rosenzweig

Barov

Thompson

et al. 2004

Phys. Rev. ST Accel. Beams

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The energy loss and gain of a beam in the nonlinear, ''blowout'' regime of the plasma wakefield accelerator, which features ultrahigh accelerating fields, linear transverse focusing forces, and nonlinear plasma motion, has been asserted, through previous observations in simulations, to scale linearly with beam charge. Additionally, from a recent analysis by Barov et al., it has been concluded that for an infinitesimally short beam, the energy loss is indeed predicted to scale linearly with beam charge for arbitrarily large beam charge. This scaling is predicted to hold despite the onset of a relativistic, nonlinear response by the plasma, when the number of beam particles occupying a cubic plasma skin depth exceeds that of plasma electrons within the same volume. This paper is intended to explore the deviations from linear energy loss using 2D particle-in-cell simulations that arise in the case of experimentally relevant finite length beams. The peak accelerating field in the plasma wave excited behind the finite-length beam is also examined, with the artifact of wave spiking adding to the apparent persistence of linear scaling of the peak field amplitude into the nonlinear regime. At large enough normalized charge, the linear scaling of both decelerating and accelerating fields collapses, with serious consequences for plasma wave excitation efficiency. Using the results of parametric particle-in-cell studies, the implications of these results for observing severe deviations from linear scaling in present and planned experiments are discussed.

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Section: Introductionmentioning

confidence: 99%

“…To make a comparison to the analysis of Ref. [2], we adopt here the normalized notation employed in that work. All time intervals in the analysis are normalized to !…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Energy loss of a high charge bunched electron beam in plasma: Simulations, scaling, and accelerating wakefields

Rosenzweig

Barov

Thompson

et al. 2004

Phys. Rev. ST Accel. Beams

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Plasma Photocathodes

Habib,

Heinemann,

Manahan

et al. 2023

Annalen der Physik

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Plasma wakefield accelerators offer accelerating and focusing electric fields three to four orders of magnitude larger than state‐of‐the‐art radiofrequency cavity‐based accelerators. Plasma photocathodes can release ultracold electron populations within such plasma waves and thus open a path toward tunable production of well‐defined, compact electron beams with normalized emittance and brightness many orders of magnitude better than state‐of‐the‐art. Such beams will have far‐reaching impact for applications such as light sources, but also open up new vistas on high energy and high field physics. This paper reviews the innovation of plasma photocathodes, and reports on the experimental progress, challenges, and future prospects of the approach. Details of the proof‐of‐concept demonstration of a plasma photocathode in 90° geometry at SLAC FACET within the E‐210: Trojan Horse program are described. Using this experience, alongside theoretical and simulation‐supported advances, an outlook is given on future realizations of plasma photocathodes such as the upcoming E‐310: Trojan Horse‐II program at FACET‐II with prospects toward excellent witness beam parameter quality, tunability, and stability. Future installations of plasma photocathodes also at compact, hybrid plasma wakefield accelerators, will then boost capacities and open up novel capabilities for experiments at the forefront of interaction of high brightness electron and photon beams.

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Fundamentals and Applications of Hybrid LWFA-PWFA

Hidding¹,

Beaton²,

Boulton³

et al. 2019

Springer Proceedings in Physics

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Fundamental similarities and differences between laser-driven plasma wakefield acceleration (LWFA) and particle-driven plasma wakefield acceleration (PWFA) are discussed. The complementary features enable the conception and development of novel hybrid plasma accelerators, which allow previously not accessible compact solutions for high quality electron bunch generation and arising applications. Very high energy gains can be realized by electron beam drivers even in single stages because PWFA is practically dephasing-free and not diffraction-limited. These electron driver beams for PWFA in turn can be produced in compact LWFA stages. In various hybrid approaches, these PWFA systems can be spiked with ionizing laser pulses to realize tunable and high-quality electron sources via optical density downramp injection (also known as plasma torch) or plasma photocathodes (also known as Trojan Horse) and via wakefield-induced injection (also known as WII). These hybrids can act as beam energy, brightness and quality transformers, and partially have built-in stabilizing features. They thus offer compact pathways towards beams with unprecedented emittance and brightness, which may have transformative impact for light sources and photon science applications. Furthermore, they allow the study of PWFA-specific challenges in compact setups in addition to large linac-based facilities, such as fundamental beam-plasma interaction physics, to develop novel diagnostics, and to develop contributions such as ultralow emittance test beams or other building blocks and schemes which support future plasma-based collider concepts.

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Energy loss of a high-charge bunched electron beam in plasma: Analysis

Cited by 42 publications

References 15 publications

Energy loss of a high charge bunched electron beam in plasma: Simulations, scaling, and accelerating wakefields

Energy loss of a high charge bunched electron beam in plasma: Simulations, scaling, and accelerating wakefields

Plasma Photocathodes

Fundamentals and Applications of Hybrid LWFA-PWFA

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