%0 Thesis
%A Mayet, Frank
%T Acceleration and Phase Space Manipulation of Relativistic Electron Beams in Nano- and Micrometer-Scale Dielectric Structures
%N DESY-THESIS-2019-025
%I Universität Hamburg
%V Dissertation
%C Hamburg
%M PUBDB-2019-03861
%M DESY-THESIS-2019-025
%B DESY-THESIS
%P 215
%D 2019
%Z Dissertation, Universität Hamburg, 2019
%X This thesis is about simulations, proof-of-principle experimental setups and first test experiments for new ultra-compact particle accelerators based on dielectric structures. Due to the high damage threshold of nano- and micrometer-scale dielectrics in the optical regime, accelerating fields on the order of GV/m can be achieved. This is more than an order of magnitude higher than what is possible with conventional RF-based technology, overcoming size limitations in high energy accelerators. The Accelerator on a CHip International Program (ACHIP) aims to demonstrate a working prototype of an all-optical, ultra-compact particle accelerator, based on this technology. Being part of the ACHIP collaboration, DESY will conduct related test experiments at its ARES linac.The design of this experiment is a central topic of this thesis. At ARES, it is planned to inject ultra- short relativistic electron bunches into laser-illuminated dielectric grating structures (DLA). The goal of the experiment is to show for the first time net-acceleration with low energy spread growth. In addition to that, a scheme for phase-synchronous acceleration of microbunch trains is planned to be implemented, enabling the demonstration of stable shot-to-shot operation. To this end, the layout of the first experimental area at the ARES linac and several key components were designed. The whole experiment was simulated start-to-end both using well established codes, as well as the novel code DLATracker, which was programmed as part of this thesis. It enables orders of magnitude faster beam simulation in DLA structures compared to traditional particle-in-cell codes. Also, numerical simulation studies were performed to investigate solutions for transverse focusing in DLAs, as well as the challenge of sub-fs synchronization and timing.In addition to the ACHIP-related experiment, two other experiments based on micrometer-scale dielectric lined waveguides (DLW) are proposed in this work. These two experiments can show that dielectric structures are suitable to be used as efficient phase space manipulation and diagnostic devices in both novel and conventional accelerator contexts. In the first experiment, planned to be conducted at the RE- GAE accelerator at DESY, sub-fs bunch length measurement resolution is achieved in simulation using a sub-THz-driven DLW-based transverse deflecting structure (TDS). The second proposed experiment is centered around 3D-printed DLWs that can be used as passive longitudinal phase space synthesizers.This thesis thus explores the physics and the potential of nano- and micrometer-scale dielectric accelerators, describes the design of required proof-of-principle experiments and finally discusses the possible application reach.
%F PUB:(DE-HGF)3 ; PUB:(DE-HGF)29 ; PUB:(DE-HGF)11
%9 BookReportDissertation / PhD Thesis
%R 10.3204/PUBDB-2019-03861
%U https://bib-pubdb1.desy.de/record/426707