Cryomodule
![simplified sketch of a SRF cavity in a helium bath, with RF coupling and a passing particle beam.](/Images/godic/202501/07/SRF_Cavity_Diagram_11244.png")
![](/Images/godic/202501/07/International_Linear_Collider_main_linac_cryomodule_-_exterior1244.jpg")
![](/Images/godic/202501/07/International_Linear_Collider_main_linac_cryomodule_-_cross_section1244.jpg")
![](/Images/godic/202501/07/International_Linear_Collider_main_linac_cryomodule_-_flange1245.jpg")
A cryomodule is a section of a modern particle accelerator composed of superconducting RF (SRF) acceleration cavities, and needs very low operating temperatures (of around 2 Kelvin). The cryomodule is a complex, state-of-the-art supercooled component in which particle beams are accelerated for scientific research. The niobium cavities are cooled with liquid helium.