Speaker
Description
The current baseline for the FCC-ee electron source is an RF-gun, which was selected to meet the strict emittance requirement < 4 mm mrad normalized transverse emittance. The recent incorporation of an electron damping ring into the injector complex relaxes this requirement, allowing the potential use of a simpler and more reliable thermionic gun. This study explores and compares these two approaches, with an emphasis on the fast charge variation. The FCC-ee source must deliver 4 bunches of varying charge up to 5 nC, with a spacing of 25 ns between them. The challenging top-up injection scheme for the collider requires a bunch-to-bunch charge variation within the 25 ns bunch separation. Given the short time frame, it is not feasible to adjust the electron gun to each charge individually. Therefore, the proposed design must be able to operate within the large charge range of 0-5 nC. Performance comparison of the rf and thermionic gun is discussed in this work.
| In which format do you inted to submit your paper? | LaTeX |
|---|