A European neutrino program based on the machine upgrades of the LHC

Abstract

In the next decade, a significant upgrade of the LHC injection system is planned with the aim of fully exploiting the physics potential of this collider. In particular, the upgrade of the SPS (Super-SPS) would allow proton injection with energy twice the one of the current system and would ground on a firm basis the luminosity upgrade of the Large Hadron Collider. Beyond LHC physics, this machine offers an unprecedented opportunity for the experimental determination of the leptonic mixing matrix, particularly of Dirac CP violation. In this talk, we show that a Beta Beam based on the Super-SPS and on a 40 kton iron detector at Gran Sasso can address CP violation in the leptonic sector for any value of the θ 13 angle that gives a positive ν µ ¡ ν e signal in the forthcoming SuperBeam experiments (e.g. T2K). In general, we show that a Beam Beam driven by the Super-SPS has a physics potential comparable to so-called "Phase II" SuperBeams (e.g. JAERI to HyperKamiokande) but does not require the construction of ultra-massive detectors and offers a fascinating synergy with high energy collider physics and nuclear physics.

Dual fast-cycling superconducting synchrotron at Fermilab and a possible path to the future of high energy particle physics

“…The higher the energy of the neutrino the denser the detector can be used. This is very important because as pointed out in [32] it allows for the neutrinos in the 20 GeV range use the iron based calorimeters, saving space while increasing the fiducial mass. Most of the current neutrino experiments apply low-density medium such as water or the liquid scintillator.…”