Speaker
Description
The FCC-ee injector complex includes a dedicated damping ring planned to operate at 2.86 GeV energy to reduce the emittance of the incoming electron and positron beams prior to their injection into the high-energy linac, where they will be accelerated up to 20 GeV for the main booster ring. Ionization of the residual gas caused by interacting with the circulating bunches may occur, and these ions can be trapped and accumulated by the fields of the electron beam. This process may lead to fast beam–ion instabilities, potentially affecting beam quality in the damping ring.
This study investigates the mechanisms of ion creation, accumulation and trapping across the considered FCC-ee damping-ring lattice options. A range of vacuum conditions, gas compositions and bunch parameters are explored to identify the operational regimes in which fast ion instabilities may become significant.
Funding Agency
TENMAK under project number 2025TENMAK(CERN)A5.H3.F2-09
| In which format do you inted to submit your paper? | LaTeX |
|---|---|
| Preprint marking on your proceeding paper | I do not wish my paper to be marked as preprint. |