There are a number of XFEL around the world that are in operation but are running at different energies. Depending on your research you will need to select the right XFEL for you. If you are interested at looking at atomic resolution of structures then you require and XFEL in the region of hard x-rays. The soft XFEL are more suited for looking at cellular level imaging.

There are a number of XFEL around the world that are in operation but are running at different energies. Depending on your research you will need to select the right XFEL for you. If you are interested at looking at atomic resolution of structures then you require and XFEL in the region of hard x-rays. The soft XFEL are more suited for looking at cellular level imaging. Below is guide of the current XFEL in operation and what type of research the are ideally suited.