From 21 to 27 November 2023, I visited Dr. Xinhua Xie, one of our project collaborators, at PSI (Switzerland). On the one hand, during that week I participated in an experiment on X-ray-induced Augen ionization of molecules. On the other hand, I learned a lot of background information about free electron lasers (FELs). In addition to academics, the SwissFEL and SLS tour guided by Dr. Xinhua was also very impressive.
