CERN Accelerating science

Published Articles
Report number	CERN-ACC-2015-255
Title	Development of a Spectrometer for Proton Driven Plasma Wakefield Accelerated Electrons at AWAKE
Author(s)	Deacon, Lawrence (University Coll. London) ; Biskup, Bartolomej (Prague, Tech. U. ; CERN) ; Bravin, Enrico (CERN) ; Jolly, Simon (University Coll. London) ; Keeble, Fearghus (University Coll. London) ; Petrenko, Alexey (CERN) ; Wing, Matthew (University Coll. London ; DESY ; Hamburg U.)
Publication	2015
Number of pages	4
In:	6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.WEPWA045
Subject category	Accelerators and Storage Rings ; $$a13: Novel Acceleration Techniques (ANAC2) ; 13.4: Modulation of long plasmas
Abstract	The AWAKE experiment is to be constructed at the CERN Neutrinos to Gran Sasso facility (CNGS). This will be the first experiment to demonstrate proton-driven plasma wakefield acceleration. The 400 GeV proton beam from the CERN SPS will excite a wakefield in a plasma cell several metres in length. To observe the plasma wakefield, electrons of 10–20 MeV will be injected into the wakefield following the head of the proton beam. Simulations indicate that electrons will be accelerated to GeV energies by the plasma wakefield. The AWAKE spectrometer is intended to measure both the peak energy and energy spread of these accelerated electrons. Improvements to the baseline design are presented, with an alternative dipole magnet and quadrupole focussing, with the resulting energy resolution calculated for various scenarios. The signal to background ratio due to the interaction of the SPS protons with upstream beam line components is calculated, and CCD camera location, shielding and light transport are considered.
Copyright/License	publication: © 2015-2025 The Author(s) (License: CC-BY-3.0)

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