SAP2025 - the 15th Symposium on Accelerator Physics

Session

Parallel Talk Session 2

3 Sept 2025, 18:05

Urumqi, Xinjiang, China

34. Beam extraction and dark current study of a C-band RF photo gun (WEXC6)

Xingguang Liu (Institute of High Energy Physics, Chinese Academy of Sciences, China Spallation Neutron Source)

03/09/2025, 19:50

MC5: Novel Particle Sources

Contributed Oral Presentation

C-band RF photo gun is being developed worldwide for better electron bunch emittance, aiming to be used in advanced light sources such as diffraction-limited storage rings and free electron lasers. Initial beam tests of a 3.6-cell C-band RF photo gun achieved 6.6 MeV beam energy at 137 MV/m cathode gradient were conducted, along with high dark current; Surface checks revealed electron damage...