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Title: Mechanisms for the mitigation of the hose instability in plasma-wakefield accelerators
Authors: Mehrling, T. J.
Fonseca, R. A.
Ossa, A.
Vieira, J.
Issue Date: 2019
Publisher: American Physical Society
Abstract: In this work we provide an in-depth analysis of mechanisms which mitigate the hose instability in the blowout regime in plasma-wakefield accelerators. We show by means of theory and three-dimensional particle-in-cell simulations that the mitigation mechanisms related to a beam energy spread are effective for parameters as used in major plasma-wakefield accelerator experiments and for various beam energies, beam current profiles, and types of hosing seed. In addition, we establish the theoretical principles for the reduction of the initial hosing seed in tapered vacuum-to-plasma transitions and derive respective analytic predictions which are successfully benchmarked against particle-in-cell simulations. We also investigate the possibility to facilitate efficient and stable acceleration of witness beams in the blowout regime. This work therefore provides a deepened understanding for the methods that allow for the mitigation of hosing, a crucial prerequisite to facilitate stable acceleration of high quality beams in plasma-wakefield accelerators.
Peer reviewed: yes
DOI: 10.1103/PhysRevAccelBeams.22.031302
ISSN: 2469-9888
Accession number: WOS:000461924400003
Appears in Collections:CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica

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Physical Review Accelerators and Beams 2019 Mehrling.pdfVersão Editora1.61 MBAdobe PDFView/Open

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