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Title	Self-Modulation Instability of Electron Beams in Plasma Channels of Variable Length
Authors	O. Lishilin, Y. Chen, J.D. Good, M. Groß, I.I. Isaev, C. Koschitzki, M. Krasilnikov, G. Loisch, A. Oppelt, H.J. Qian, F. Stephan DESY Zeuthen, Zeuthen, Germany R. Brinkmann, A. Martinez de la Ossa, J. Osterhoff DESY, Hamburg, Germany F.J. Grüner Center for Free-Electron Laser Science, Universität Hamburg, Hamburg, Germany T.J. Mehrling, C.B. Schroeder LBNL, Berkeley, USA
Abstract	The self-modulation instability (SMI) of long (in respect to the plasma wavelength) charged particle beams passing through plasma enables the use of currently existing high energy charged particle beams as drivers for plasma wakefield accelerators. At the Photo Injector Test facility at DESY in Zeuthen (PITZ) the SMI of electron beams is studied *, **. An enhanced experimental setup includes a plasma channel of variable length which allows to investigate in details the development stages of the SMI by measuring the instability growth rate and phase velocity as a function of propagation distance in the plasma. In this contribution we present the experimental setup improvements, first measurement results and supporting beam dynamics simulations.
Footnotes & References	* M. Gross, et al., Phys. Rev. Lett., vol. 120, p. 144802, 2018. ** G. Loisch, et al., Plasma Physics and Controlled Fusion, vol. 61(4), p. 045012, 2019
Paper	download THPGW017.PDF [0.459 MB / 3 pages]
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Conference	IPAC2019
Series	International Particle Accelerator Conference (10th)
Location	Melbourne, Australia
Date	19-24 May 2019
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Mark Boland (UoM, Saskatoon, SK, Canada); Hitoshi Tanaka (KEK, Tsukuba, Japan); David Button (ANSTO, Kirrawee, NSW, Australia); Rohan Dowd (ANSTO, Kirrawee, NSW, Australia); Volker RW Schaa (GSI, Darmstadt, Germany); Eugene Tan (ANSTO, Kirrawee, NSW, Australia)
Online ISBN	978-3-95450-208-0
Received	11 May 2019
Accepted	23 May 2019
Issue Date	21 June 2019
DOI	doi:10.18429/JACoW-IPAC2019-THPGW017
Pages	3616-3618
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.