Jérémie Meslem

Commissioning of a hard x-ray Hartmann wavefront sensor at SwissFEL

Hartmann wavefront sensors are robust, achromatic and need nothing in the beam but the sensor itself, which makes them attractive as permanent diagnostics on X-ray beamlines. Their absolute accuracy is set by the reference wave used for calibration, which conventionally requires a dedicated pinhole set-up or beamtime a...