“…Recently, data acquisition times as short as 1 min have been successfully demonstrated at a quality comparable with synchrotrons (Huang et al, 2020). Other laboratory XAS setups, based on X-ray tubes (Seidler et al, 2014;Né meth et al, 2016;Bè s et al, 2018;Błachucki et al, 2019;Jahrman et al, 2019), laser-plasma sources (Uhlig et al, 2013), laser-betatron ones (Mahieu et al, 2018) or high harmonic generation (Pertot et al, 2017;Popmintchev et al, 2018) typically operate at a lower X-ray energy below 10 keV and typically require exposure times of tens of minutes to hours. This elongated acquisition time originates from the lower brilliance of X-ray tubes compared with ICSs, like at the MuCLS.…”