In the search for the CP-violation in the leptonic sector, crucial information has been obtained from neutrino experiments. The measurement of the third neutrino mixing angle, θ_13, opened the possibility of discovering the Dirac leptonic CP violating angle, δ_CP with intense “super” neutrino beam experiments. In the light of these new findings, an urgent need has arisen to improve the detection sensitivity of the current long-baseline detectors, considering proton driver at MW scale with MegaTon scale detector, with a key modification to place the far detectors at the second, rather than the first, oscillation maximum.
The European Spallation Source neutrino Super Beam (ESS𝜈SB) aims to benefit from the high power of the European Spallation Source, ESS, LINAC in Lund-Sweden, to produce the world’s most intense second-generation neutrino beam enabling measurement to be made at the second oscillation maximum. Assuming a ten-year exposure with two-years running time in neutrino mode and eight-years in antineutrino mode, CP-invariance violation could be established with a significance of 5σ over more than 70% of all values of δ_CP and with an error in the measurement of the δ_CP angle of less than 8° for all values of δ_CP. More details on the physics potential of the experiment will be given in the talk. The current design study programs running within the collaboration, especially those that that have direct impact on the precision measurements of δ_CP will be reviewed.