Ion beam emittance growth in LINAC-ring electron–ion colliders due to LINAC RF voltage fluctuations and spurious dispersion

LINAC-ring electron–ion colliders provide superior luminosity performance compared to ring–ring based designs due to the fact that beam–beam effects on the electron beam can be largely ignored. However, fluctuations in electron beam parameters may lead to intolerable ion beam emittance blow-up. While the effects of electron bunch intensity fluctuations and emittance jitter have been studied earlier [C. Montag, Hadron beam emittance growth due to electron beam parameter jitter in LINAC-Ring electron–ion colliders, C-A/AP/143. [1]], this report examines the effect of random RF voltage fluctuations in conjunction with spurious dispersion in the electron LINAC.