Eur. Phys. J. C (2011) 71: 1745
https://doi.org/10.1140/epjc/s10052-011-1745-8

Special Article - Tools for Experiment and Theory

A new design for the CERN-Fréjus neutrino super-beam

Irfu, CEA-Saclay, 91191, Gif-sur-Yvette, France

^* e-mail: andrea.longhin@lnf.infn.it

Received: 23 May 2011
Published online: 27 September 2011

Abstract

We present an optimization of the hadron focusing system for a low-energy high intensity conventional neutrino beam (super-beam) proposed on the basis of the HP-SPL at CERN with a beam power of 4 MW and an energy of 4.5 GeV. The far detector would be a 440 kton Water Cherenkov detector (MEMPHYS) located at a baseline of 130 km in the Fréjus site. The neutrino fluxes simulation relies on a new GEANT4 based simulation coupled with an optimization algorithm based on the maximization of the sensitivity limit on the θ ₁₃ mixing angle. A new configuration adopting a multiple horn system with solid targets is proposed which improves the sensitivity to θ ₁₃ and the CP violating phase δ _CP.