Anomalous pinch in electron-electron beam collision

Abstract

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 (disruption) and strong-field quantum electrodynamics (SF-QED). The locally created electron-positron pairs, from SF-QED effects, screen the self-fields of the beams and can invert the polarity of the Lorentz force resulting in a pinch of the beams. A theoretical model predicts the pinch condition and is confirmed by first-principles 3-dimensional particle-in-cell simulations. This anomalous pinch enhances density compression, increases the collision luminosity, and amplifies the local magnetic fields and the quantum parameter of the beam particles by several orders of magnitude.

Accepted in Physical Review Accelerators and Beams. 10 pages, 5 figures, 1 table, with appendices

References in corpus (15)

• Extremely high-intensity laser interactions with fundamental quantum systems
• Advances in QED with intense background fields
• Charged particle motion and radiation in strong electromagnetic fields
• Time-dependent pair cascades in magnetospheres of neutron stars I. Dynamics of the polar cap cascade with no particle supply from the neutron star surface
• Laser absorption via QED cascades in counter propagating laser pulses
• On the mechanism of hard X-ray emission from magnetars
• On the Prospect of Studying Nonperturbative QED with Beam-Beam Collisions
• Modern and Future Colliders
• Signature of Collective Plasma Effects in Beam-Driven QED Cascades
• Bright $\gamma$ rays source and copious nonlinear Breit-Wheeler pairs in the collision of high density particle beams
• Report of the Snowmass 2021 Collider Implementation Task Force
• Exploring the Quantum Universe: Pathways to Innovation and Discovery in Particle Physics
• Beam Delivery and Beamstrahlung Considerations for Ultra-High Energy Linear Colliders
• Study of the Beamstrahlung Effects at the CEPC
• Signatures for strong-field QED in the quantum limit of beamstrahlung