  In this work we present the outlines of possible experiments for dielectric
laser acceleration (DLA) of ultra-short relativistic electron bunches produced
by the ARES linac, currently under construction at the SINBAD facility (DESY
Hamburg). The experiments are to be performed as part of the Accelerator on a
Chip International Program (ACHIP), funded by the Gordon and Betty Moore
Foundation. At SINBAD we plan to test the acceleration of already
pre-accelerated relativistic electron bunches in laser-illuminated dielectric
grating structures. We present outlines of both the acceleration of ultra-short
single bunches, as well as the option to accelerate phase-synchronous sub-fs
microbunch trains. Here the electron bunch is conditioned prior to the
injection by interaction with an external laser field in an undulator. This
generates a sinusoidal energy modulation that is transformed into periodic
microbunches in a subsequent chicane. The phase synchronization is achieved by
driving both the modulation process and the DLA with the same laser pulse. In
addition to the conceptual layouts and plans of the experiments we present
start-to-end simulation results for different ARES working points.
