Book/Dissertation / PhD Thesis

PUBDB-2020-04106

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Novel Concepts and Theoretical Studies for High-Quality Plasma-Based Accelerators

Ferran Pousa, A. (Corresponding author)DESY* ; Assmann, R. (Thesis advisor)DESY* ; Gruener, F. (Thesis advisor)CFEL*Extern* ; Martinez de la Ossa, A. (Thesis advisor)Extern*DESY*

2020
Verlag Deutsches Elektronen-Synchrotron Hamburg

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Please use a persistent id in citations: doi:10.3204/PUBDB-2020-04106

Report No.: DESY-THESIS-2020-023

Abstract: In this work, new concepts for solving some of the current challenges of plasma-based acceleration are proposed and explored. These concepts, which rely on a combination of plasma-acceleration stages with a magnetic chicane, show that GeV-range beams with sub-percent energy stability and an unprecedented sub-per-mille energy spread could be produced. Achieving such a low energy spread, which is at least an order of magnitude below current state-of-the-art, has only been possible thanks to an improved understanding of the beam dynamics in this type of accelerators and the subsequent analytical modelling of previously unaccounted sources of energy spread. In addition to proof-of-principle simulations and conceptual designs, a comprehensive study of sensitivity and tolerances of the acceleration concept is included here. This systematic study has only been possible thanks to a fast particle tracking code which has been integrally developed within this work. The positive findings presented here provide a new way towards the realization of reliable and high-quality plasma-based accelerators with a broad range of applications. Among these, the outstanding beam properties that can be reached with the presented schemes would allow for the demonstration of compact plasma-driven free-electron lasers. Thanks to these good prospects, the conceptual design of a 6 GeV accelerator based on the presented methods, which has been realized as part of this work, has been selected as a baseline option for the international EuPRAXIA project. Several of the ideas and studies carried out within this thesis have been published in peer-reviewed journals including Physical Review Letters and Scientific Reports.

Note: Dissertation, Universität Hamburg, 2020

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Contributing Institute(s):

1. Beschleunigerphysik Fachgruppe MPY1 (MPY1)

Research Program(s):

1. 631 - Accelerator R & D (POF3-631) (POF3-631)
2. EuPRAXIA - Proposal for a Horizon 2020 Design Study on the “European Plasma Research Accelerator with eXcellence In Applications“ (EuPRAXIA) (653782) (653782)
3. PHGS, VH-GS-500 - PIER Helmholtz Graduate School (2015_IFV-VH-GS-500) (2015_IFV-VH-GS-500)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2020

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Database coverage:

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