New achievements in orbital angular momentum beam characterization using a Hartmann wavefront sensor and the Kirkpatrick–Baez active optical system KAOS. - Novinec, Luka; Pancaldi, Matteo; Capotondi, Flavio; De Ninno, Giovanni; Guzzi, Francesco; Kourousias, George; Pedersoli, Emanuele; Ressel, Barbara; Rösner, Benedikt; Simoncig, Alberto; Zangrando, Marco; Manfredda, Michele (Journal of Synchrotron Radiation, 2024)