Contribution to a conference proceedings/Contribution to a book

PUBDB-2018-05122

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Optimisation of High Transformer Ratio Plasma Wakefield Acceleration at PITZ

Loisch, G. (Corresponding author)DESY* ; Boonpornprasert, P.DESY* ; Brinkmann, R.DESY* ; Good, J. D.DESY* ; Groß, M.DESY* ; Grüner, F.CFEL*Extern* ; Huck, H.DESY* ; Krasilnikov, M.DESY* ; Lishilin, O.DESY* ; Martinez de la Ossa, A.Extern*DESY* ; Oppelt, A.DESY* ; Osterhoff, J.DESY* ; Renier, Y.DESY* ; Stephan, F.DESY*

2018
JACoW Publishing Geneva, Switzerland
ISBN: 978-3-95450-184-7

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Please use a persistent id in citations: doi:10.18429/JACoW-IPAC2018-TUPML047  doi:10.3204/PUBDB-2018-05122

Abstract: The transformer ratio, the ratio between maximum accelerating field and maximum decelerating field in the driving bunch of a plasma wakefield accelerator (PWFA), is one of the key aspects of this acceleration scheme. It not only defines the maximum possible energy gain of the PWFA but it is also connected to the maximum percentage of energy that can be extracted from the driver, which is a limiting factor for the efficiency of the accelerator. Since in linear wakefield theory a transformer ratio of 2 cannot be exceeded with symmetrical drive bunches, any ratio above 2 is considered high. After the first demonstration of high transformer ratio acceleration in a plasma wakefield at PITZ, the photoinjector test facility at DESY, Zeuthen site, limiting aspects of the transformer ratio are under investigation. This includes e.g. the occurrence of bunch instabilities, like the transverse two stream instability, or deviations of the experimentally achieved bunch shapes from the ideal.

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Contributing Institute(s):

1. Photoinjektor (ZEU-PITZ)
2. Bereichsleitung Beschleuniger / Bereich Beschleuniger (M)
3. beautragt von UNI/EXP (CFEL-NOVA)
4. Forschung Linear Accelerator (FLA)

Research Program(s):

1. 631 - Accelerator R & D (POF3-631) (POF3-631)

Experiment(s):

1. Photo Injector Test Facility

Appears in the scientific report 2018

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