Simulations study for self-modulation experiment at PITZ

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2015

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Self-modulation (SM) of proton beams in plasma has recently gained interest in context with the PWFA experiment proposed by the AWAKE collaboration at CERN. Instrumental for that experiment is the SM of a proton beam to generate bunchlets for resonant wave excitation and efficient acceleration. A fundamental understanding of the underlying physics is vital, and hence an independent experiment has been set up at the beamline of the Photo Injector Test facility at DESY, Zeuthen site (PITZ), to study the SM of electron beams in a plasma. In this contribution we present simulation results of SM experiments at PITZ using the particle-in-cell code HiPACE. The simulation study is crucial to optimize the beam and plasma parameters for the experiment. Of particular interest is the energy modulation imprinted onto the beam by means of the generated wakefields in the plasma. With the support of simulations, the observation of this information in the experiment can be used to deduce key properties of the accelerating electric fields, such as their magnitude and their phase velocity, both of significant importance for the design of self-modulated plasma-based acceleration experiments. Copyright © 2015 CC-BY-3.0 and by the respective authors.

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Forschungsinformationssystem der UHH

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Quelldatensatz: oai:www.edit.fis.uni-hamburg.de:publications/23785da0-dd54-4c85-a2af-13e632705256