163 citations · 1.2k across the 44 of their papers we have counts for
46 papers
High-energy electron-positron beam collisions with large-angle disruptions
W. Zhang, T. Grismayer, L. O. Silva
We show that the beam and field dynamics in high-energy electron-positron () collisions are characterized by a new dimensionless parameter introduced as in th…
Report on the Advanced Linear Collider Study Group (ALEGRO) Workshop 2026
L. Verra, P. Muggli, B. Cross +56
The 7th ALEGRO workshop, hosted by INFN Frascati National Laboratories from 3rd to 5th March 2026, brought together the international Advanced Novel Accelerators (ANA) community to…
An axion framework for Particle-in-Cell codes with Monte-Carlo sampling: emission, absorption, and detailed balance in plasmas
Miles Radford, Ahmed Alsulami, Bertrand Martinez +5
We present an extension of the OSIRIS particle-in-cell (PIC) code that introduces an axion macroparticle species and three axion-production channels commonly used in thermal-plasma…
Plasma wakes driven by Compton scattering: Non-linear regime and particle acceleration
Thomas Grismayer, Fabrizio Del Gaudio, Luís O. Silva
We investigate plasma wake generation via Compton scattering from photon bursts, a non-ponderomotive process relevant when the photon wavelength is smaller than the interparticle d…
Design Initiative for a 10 TeV pCM Wakefield Collider
Spencer Gessner, Jens Osterhoff, Carl A. Lindstrøm +198
This document outlines a community-driven Design Study for a 10 TeV pCM Wakefield Accelerator Collider. The 2020 ESPP Report emphasized the need for Advanced Accelerator R\&D, and…
Anomalous pinch in electron-electron beam collision
W. Zhang, T. Grismayer, L. O. Silva
We show that an anomalous pinch can occur in ultrarelativistic electron-electron or positron-positron beam interaction, caused by the combined interplay of collective beam motion (…
Kinetic structure of strong-field QED showers in crossed electromagnetic fields
Mattys Pouyez, Thomas Grismayer, Mickael Grech +1
A complete, kinetic description of electron-seeded strong-field QED showers in crossed electromagnetic fields is derived. The kinetic structure of the shower and its temporal evolu…
Report on the Advanced Linear Collider Study Group (ALEGRO) Workshop 2024
J. Vieira, B. Cros, P. Muggli +40
The workshop focused on the application of ANAs to particle physics keeping in mind the ultimate goal of a collider at the energy frontier (10\,TeV, e/e, e/e, or $γ…
Multiplicity of electron- and photon-seeded electromagnetic showers at multi-petawatt laser facilities
M. Pouyez, A. A. Mironov, T. Grismayer +5
Electromagnetic showers developing from the collision of an ultra-intense laser pulse with a beam of high-energy electrons or photons are investigated under conditions relevant to…
OSIRIS-GR: General relativistic activation of the polar cap of a compact neutron star
R. Torres, T. Grismayer, F. Cruz +2
We present ab initio global general-relativistic Particle-in-cell (GR-PIC) simulations of compact millisecond neutron star magnetospheres in the axisymmetric aligned rotator config…
Commissioning and first measurements of the initial X-ray and γ-ray detectors at FACET-II
P. San Miguel Claveria, D. Storey, G. J. Cao +21
The upgraded Facility for Advanced Accelerator Experimental Tests (FACET-II) at SLAC National Accelerator Laboratory has been designed to deliver ultra-relativistic electron and po…
Particle-in-cell simulations of pulsar magnetospheres: transition between electrosphere and force-free regimes
Fábio Cruz, Thomas Grismayer, Alexander Y. Chen +3
Global particle-in-cell (PIC) simulations of pulsar magnetospheres are performed with a volume, surface and pair production-based plasma injection schemes to systematically investi…
Parametric study of the polarization dependence of nonlinear Breit-Wheeler pair creation process using two laser pulses
Qian Qian, Daniel Seipt, Marija Vranic +4
With the rapid development of high-power petawatt class lasers worldwide, exploring physics in the strong field QED regime will become one of the frontiers for laser-plasma interac…
Beam Delivery and Beamstrahlung Considerations for Ultra-High Energy Linear Colliders
Tim Barklow, Spencer Gessner, Mark Hogan +27
As part of the Snowmass'21 community planning excercise, the Advanced Accelerator Concepts (AAC) community proposed future linear colliders with center-of-mass energies up to 15 Te…
High-energy synchrotron flares powered by strongly radiative relativistic magnetic reconnection: 2D and 3D PIC simulations
K. M. Schoeffler, T. Grismayer, D. Uzdensky +1
The time evolution of high-energy synchrotron radiation generated in a relativistic pair plasma energized by reconnection of strong magnetic fields is investigated with two- and th…
Magnetic frame-dragging correction to the electromagnetic solution of a compact neutron star
R. Torres, T. Grismayer, F. Cruz +1
Neutron stars are usually modelled as spherical, rotating perfect conductors with a predominant intrinsic dipolar magnetic field anchored to their stellar crust. Due to their compa…
Signatures for strong-field QED in the quantum limit of beamstrahlung
W. L. Zhang, T. Grismayer, L. O. Silva
Signatures of strong-field quantum electrodynamics are determined for collisions between round ultrarelativistic leptonic beams in the quantum limit of beamstrahlung. In the low di…
Model of pulsar pair cascades in non uniform electric fields: growth rate, density profile and screening time
Fábio Cruz, Thomas Grismayer, Simon Iteanu +2
Time-dependent cascades of electron-positron pairs are thought to be the main source of plasma in pulsar magnetospheres and a primary ingredient to explain the nature of pulsar rad…
Coherent emission from QED cascades in pulsar polar caps
Fábio Cruz, Thomas Grismayer, Alexander Y. Chen +2
Pulsar magnetospheres are thought to be filled with electron-positron plasma generated in pair cascades. The driving mechanism of these cascades is the emission of gamma-ray photon…
Kinetic instability in inductively oscillatory plasma equilibrium
Fábio Cruz, Thomas Grismayer, Luis O. Silva
A uniform in space, oscillatory in time plasma equilibrium sustained by a time-dependent current density is analytically and numerically studied resorting to particle-in-cell simul…
Compton driven beam formation and magnetisation via plasma microinstabilities
Bertrand Martinez, Thomas Grismayer, Luís O. Silva
Compton scattering of gamma rays propagating in a pair plasma can drive the formation of a relativistic electron positron beam. This process is scrutinised theoretically and numeri…
High-order harmonic generation in an electron-positron-ion plasma
W. L. Zhang, T. Grismayer, K. M. Schoeffler +2
The laser interaction with an electron-positron-ion mixed plasma is studied, from the perspective of the associated high-order harmonic generation. For an idealized mixed plasma wh…
Kinetic model of large-amplitude oscillations in neutron star pair cascades
Fábio Cruz, Thomas Grismayer, Luis O. Silva
Electron-positron pair cascades developed in the extreme electromagnetic fields of neutron star polar caps are considered a key source of magnetospheric plasma in these objects. We…
Scaling laws for direct laser acceleration in a radiation-reaction dominated regime
M. Jirka, M. Vranic, T. Grismayer +1
We study electron acceleration within a sub-critical plasma channel irradiated by an ultra-intense laser pulse ( or ). In this regime, radiation…