Miniature transport-line design and experimental investigations of the superconducting transverse gradient undulator source for laser plasma accelerator-driven FELs

Laser-plasma acceleration is an outstanding candidate to drive the next-generation compact light sources and FELs. Having orders of magnitude larger electrical field gradients than RF cavities-based machines makes them more compact. To compensate large chromatic effects, beam divergence and energy spread, using novel compact beam optic elements in the beam transport line as well as a transverse-gradient undulator (TGU) has been considered. We aim to design miniaturized, high strength, normal conducting and superconducting magnets for the transport line planned to be experimentally tested and employed at the JETI laser facility in Jena, along with the experimental efforts for investigating and modifying the TGU as the final light source. In this contribution we present an overview over the project and its current status.