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Article
Title	Electron Witness Constraints for AWAKE
Related title	ELECTRON WITNESS CONSTRAINTS FOR AWAKE
Author(s)	Farmer, John P (Munich, Max Planck Inst. ; CERN) ; Gschwendtner, Edda (CERN) ; Liang, Linbo (Manchester U.) ; Muggli, Patric (Munich, Max Planck Inst.) ; Weidl, Martin (Garching, Max Planck Inst.)
Publication	Geneva : JACoW, 2021
Number of pages	4
In:	JACoW IPAC 2021 (2021) 1753-1756
In:	12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.1753-1756
DOI	10.18429/JACoW-IPAC2021-TUPAB158 (publication)
Subject category	Accelerators and Storage Rings
Abstract	The AWAKE project at CERN successfully demonstrated the use of a proton driver to accelerate an electron witness in plasma*. One of the key goals for AWAKE Run2 is to better control this acceleration, separating the proton-beam-modulation and electron-acceleration stages in order to achieve high energy electrons with high beam quality. Controlled acceleration additionally requires careful tuning of the witness bunch parameters at the injection point. In this work, we use particle-in-cell simulations to study the tolerances for this matching, and discuss techniques to loosen these constraints.
Copyright/License	publication: © 2021 (License: CC-BY-3.0)

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