Speaker
Description
Bright X-ray beams with narrow bandwidth and tunable energy can lead to various novel applications. Compact all-optical inverse Compton scattering X-ray sources show great potential as alternatives to large-scale synchrotron sources to democratise access to such beams. However, all-optical ICS sources are yet to demonstrate percent-level bandwidths, a key requirement for many applications. Here we show how an active plasma lens can be used to tailor the electron bunch-photon interaction, producing tunable X-ray and gamma beams with percent-level bandwidths. The central energy of the X-ray beam can be varied without any moving parts, allowing for precision-tuning the X-ray beam energy. These concepts form the basis of the APHEX source at DESY, which will be a precision-tunable high flux X-ray source for industrial and medical applications. First results from APHEX will be discussed along with potential applications for this unique source.
