1. Photon ScienceDeutsches Elektronen‐Synchrotron DESY Hamburg 22603 Germany
2. School of Physical Science and TechnologyShanghaiTech University Shanghai 201210 China
3. National Synchrotron Light Source IIBrookhaven National Laboratory Upton NY 11973 USA
4. Materials Science and Technology DivisionOak Ridge National Laboratory Oak Ridge TN 37831 USA
5. Department DICIIUniversity of Roma Tor Vergata Rome I‐00133 Italy
6. CNR‐SPIN c/o University of Roma Tor Vergata Rome I‐00133 Italy
7. CNR‐SPIN SalernoUniversity of Salerno Fisciano I‐84084 Italy
8. CNR‐IOMTASC National Laboratory Trieste I‐34149 Italy
9. CLASSECornell University Ithaca NY 14853 USA
10. ALBA Synchrotron Light SourceCerdanyola del Vallès Barcelona 08290 Spain