Focusing of a Long Relativistic Proton Bunch in Underdense Plasma
Livio Verra, Edda Gschwendtner, Patric Muggli
TL;DR
This paper investigates how a long relativistic proton bunch is focused in underdense plasma, using simulations and experimental data from CERN's AWAKE project to understand the plasma response and focusing forces involved.
Contribution
It introduces a detailed analysis of proton bunch focusing in underdense plasma, combining 2D simulations with experimental measurements to enhance understanding of plasma-based focusing mechanisms.
Findings
Plasma response provides a focusing force for protons.
Finite transverse plasma size affects focusing dynamics.
Experimental measurements at CERN support simulation results.
Abstract
We discuss the focusing effect experienced by a long relativistic proton bunch, when propagating in underdense plasma. We show with 2D quasi-static simulations that the response of the plasma to the presence of the bunch provides a focusing force for the protons. We discuss the impact of the finite transverse size of the plasma on the dynamics of the process and we introduce the measurements performed at the AWAKE experiment at CERN.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Particle Accelerators and Free-Electron Lasers · Particle physics theoretical and experimental studies