The European Spallation Source neutrino Super Beam (ESS$\nu$SB) aims to benefit from the high power of the European Spallation Source (ESS) linear accelerator (linac) in Lund-Sweden, to produce the world’s most intense second-generation neutrino beam, which will enable measurements to be made at the second neutrino oscillation maximum.

Assuming a ten-year exposure with five years running time in neutrino-mode and five years in antineutrino-mode, CP-invariance violation could be established with a significance of 5$\sigma$ over more than 70$\%$ of all values of $\delta_{CP}$ and with an error in the measurement of the $\delta_{CP}$ angle of less than 8$^\circ$ for all values of $\delta_{CP}$.