  In laser illuminated dielectric accelerators (DLA) high acceleration
gradients can be achieved due to high damage thresholds of the materials at
optical frequencies. This is a necessity for developing more compact particle
accelerator technologies. The Accelerator on a CHip International Program
(ACHIP) funded by the Gordon and Betty Moore Foundation is researching such
devices. DESY Hamburg is part of the collaboration. The dedicated accelerator
research facility SINBAD is particularly well suited for DLA experiments at
relativistic electron energies. High quality beams and short bunch lengths are
anticipated from the ARES linac which is currently under construction at
SINBAD. The aim of the experiment is the injection of a short electron bunch
from the ARES linac into a DLA. In this study the results of one of the first
possible experiments at the facility are estimated via a combination of
particle-in-cell (PIC) and tracking simulations. ASTRA is used to simulate an
electron bunch from the ARES linac at a suitable working point. The dielectric
part of the setup will be simulated using the PIC code from CST Particle Studio
incorporating the retrieved bunch from the ASTRA simulation. The energy spectra
of the electron bunches are calculated as would be measured from a spectrometer
dipole with and without the laser fields.
