98 citations · 809 across the 33 of their papers we have counts for
27 papers · 1 filter
Development of the Self-Modulation Instability of a Relativistic Proton Bunch in Plasma
L. Verra, S. Wyler, T. Nechaeva +7
Self-modulation is a beam-plasma instability that is useful to drive large-amplitude wakefields with bunches much longer than the plasma skin depth. We present experimental results…
Proton acceleration with intense twisted laser light
Camilla Willim, Jorge Vieira, Victor Malka +1
An efficient approach that considers a high-intensity twisted laser of moderate energy (few J) is proposed to generate collimated proton bunches with multi-10-MeV energies from a d…
Coherence and superradiance from a plasma-based quasiparticle accelerator
B. Malaca, M. Pardal, D. Ramsey +7
Coherent light sources, such as free electron lasers, provide bright beams for biology, chemistry, physics, and advanced technological applications. Increasing the brightness of th…
Mitigation of the onset of hosing in the linear regime through plasma frequency detuning
Mariana Moreira, Patric Muggli, Jorge Vieira
The hosing instability poses a feasibility risk for plasma-based accelerator concepts. We show that the growth rate for beam hosing in the linear regime (which is relevant for conc…
Controlled Growth of the Self-Modulation of a Relativistic Proton Bunch in Plasma
L. Verra
A long, narrow, relativistic charged particle bunch propagating in plasma is subject to the self-modulation (SM) instability. We show that SM of a proton bunch can be seeded by the…
Generation of topologically complex three-dimensional electron beams in a plasma photocathode
Xinlu Xu, Jorge Vieira, Mark Hogan +2
Laser-triggered ionization injection is a promising way of generating controllable high-quality electrons in plasma-based acceleration. We show that ionization injection of electro…
Stable Positron Acceleration in Thin, Warm, Hollow Plasma Channels
T. Silva, L. D. Amorim, M. C. Downer +4
Hollow plasma channels are attractive for lepton acceleration because they provide intrinsic emittance preservation regimes. However, beam breakup instabilities dominate the dynami…
Slowdown of interpenetration of two counterpropagating plasma slab due to collective effects
N. Shukla, K. Schoeffler, J. Vieira +3
The nonlinear evolution of electromagnetic instabilities driven by the interpenetration of two plasma clouds is explored using {\it ab initio} kinetic plasma simulations…
Nonlinear Thomson scattering with ponderomotive control
D. Ramsey, B. Malaca, A. Di Piazza +7
In nonlinear Thomson scattering, a relativistic electron reflects and re-radiates the photons of a laser pulse, converting optical light to x rays or beyond. While this extreme fre…
Simulation and Experimental Study of Proton Bunch Self-Modulation in Plasma with Linear Density Gradients
P. I. Morales Guzmán, P. Muggli, R. Agnello +88
We present numerical simulations and experimental results of the self-modulation of a long proton bunch in a plasma with linear density gradients along the beam path. Simulation re…
Transition between Instability and Seeded Self-Modulation of a Relativistic Particle Bunch in Plasma
F. Batsch, P. Muggli, R. Agnello +94
We use a relativistic ionization front to provide various initial transverse wakefield amplitudes for the self-modulation of a long proton bunch in plasma. We show experimentally t…
Laser-plasma acceleration beyond wave breaking
J. P. Palastro, B. Malaca, J. Vieira +5
Laser wakefield accelerators rely on the extremely high electric fields of nonlinear plasma waves to trap and accelerate electrons to relativistic energies over short distances. Wh…
Proton Bunch Self-Modulation in Plasma with Density Gradient
F. Braunmüller, T. Nechaeva, AWAKE Collboration
We study experimentally the effect of linear plasma density gradients on the self-modulation of a 400\,GeV proton bunch. Results show that a positive/negative gradient in/decreases…
Interplay between the Weibel instability and the Biermann battery in realistic laser-solid interactions
N. Shukla, K. Schoeffler, E. Boella +3
A novel setup allows the Weibel instability and its interplay with the Biermann battery to be probed in laser-driven collisionless plasmas. Ab initio particle-in-cell (PIC) simulat…
Laser-Plasma Interactions Enabled by Emerging Technologies
J. P. Palastro, F. Albert, B. Albright +51
An overview from the past and an outlook for the future of fundamental laser-plasma interactions research enabled by emerging laser systems.
Influence of proton bunch parameters on a proton-driven plasma wakefield acceleration experiment
Mariana Moreira, Jorge Vieira, Patric Muggli
We use particle-in-cell (PIC) simulations to study the effects of variations of the incoming 400 GeV proton bunch parameters on the amplitude and phase of the wakefields resulting…
Radiation emission in laser-wakefields driven by structured laser pulses with orbital angular momentum
J. L. Martins, J. Vieira, J. Ferri +1
High-intensity X-ray sources are invaluable tools, enabling experiments at the forefront of our understanding of materials science, chemistry, biology, and physics. Laser-plasma el…
Stable attosecond electron bunches from a nanofiber driven by Laguerre-Gaussian lasers
Li-Xiang Hu, Tong-Pu Yu, Zheng-Ming Sheng +5
Generation of attosecond bunches of energetic electrons offers significant potential from ultrafast physics to novel radiation sources. However, it is still a great challenge to st…
Signatures of the self-modulation instability of relativistic proton bunches in the AWAKE experiment
M. Moreira, J. Vieira, P. Muggli
We investigate numerically the detection of the self-modulation instability in a virtual detector located downstream from the plasma in the context of AWAKE. We show that the densi…
AWAKE readiness for the study of the seeded self-modulation of a 400\,GeV proton bunch
P. Muggli, E. Adli, R. Apsimon +104
AWAKE is a proton-driven plasma wakefield acceleration experiment. % We show that the experimental setup briefly described here is ready for systematic study of the seeded self-mod…
High orbital angular momentum harmonic generation
J. Vieira, R. M. G. M. Trines, E. P. Alves +5
We identify and explore a high orbital angular momentum (OAM) harmonics generation and amplification mechanism that manipulates the OAM independently of any other laser property, b…
Path to AWAKE: Evolution of the concept
A. Caldwell, E. Adli, L. Amorim +118
This report describes the conceptual steps in reaching the design of the AWAKE experiment currently under construction at CERN. We start with an introduction to plasma wakefield ac…
Modelling radiation emission in the transition from the classical to the quantum regime
J. L. Martins, M. Vranic, T. Grismayer +3
An emissivity formula is derived using the generalised Fermi-Weizacker-Williams method of virtual photons which accounts for the recoil the charged particle experiences as it emits…
Magnetically assisted self-injection and radiation generation for plasma based acceleration
J. Vieira, J. L. Martins, V. B. Pathak +3
It is shown through analytical modeling and numerical simulations that external magnetic fields can relax the self-trapping thresholds in plasma based accelerators. In addition, th…