Figure 2
The geometric model of a cylindrical gas attenuator used for the thermodynamic simulation. The attenuator is 5 m in effective total length and 20 mm in diameter and filled with argon gas. The walls of the attenuator are cooled and kept at a constant temperature T0 = 300 K. The X-ray FEL beam of diameter 2 mm with a flat-top transverse profile enters from the left. |