Interferometer-based high-accuracy white light measurement of neutral rubidium density and gradient at AWAKE

Fabian Batsch, Mikhail Martyanov, Erdem Oez +4

The AWAKE experiment requires an automated online rubidium (Rb) plasma density and gradient diagnostic for densities between 1 and 10$\cdot$10${}^{14}$ cm${}^{-3}$. A linear density gr…