%0 Thesis
%A Zhu, Jun
%T Design Study for Generating Sub-femtosecond to Femtosecond Electron Bunches for Advanced Accelerator Development at SINBAD
%I University of Hamburg
%V Dissertation
%M PUBDB-2018-01379
%P 171
%D 2017
%Z Dissertation, University of Hamburg, 2017
%X The SINBAD (Short INnovative Bunches and Accelerators at DESY) project is adedicated, long-term accelerator research and development (R</td><td width="150">
%X D) facility currentlyunder construction at the DESY Hamburg campus, aiming to provide an infrastructurefor developing several types of novel high-gradient accelerators. The research presented in this thesis addresses the design of the magnetic lattice as well as the modeling and simulations of ultra-short electron bunch generation at the ARES (Accelerator Research Experiment at SINBAD) linac, which is the core of the SINBAD facility. In order to meet the requirements of the high-gradient accelerators, the ARES linac was optimized to provide  100 MeV, low charge (0.5 to 30 picocoulombs) and ultra-short electron bunches (sub-femtosecond to dozens of femtoseconds) with ultra-small spot sizes (less than a few micrometers) and excellent timing stability (rms bunch arrival-time jitter < 10 femtoseconds). As one of the research branches, the generation of a train of dozensof-femtosecond-long electron bunches with terahertz repetition rate was experimentally investigated at the SPARC_LAB test facility. A novel method was proposed to simultaneously measure the relative misalignments of the individual electron bunches in both planes, which is beyond the reach of up-to-date beam position monitors.
%F PUB:(DE-HGF)11
%9 Dissertation / PhD Thesis
%R 10.3204/PUBDB-2018-01379
%U https://bib-pubdb1.desy.de/record/401420