Author/Authors :
F. and Baibussinov، نويسنده , , B. and Baldo-Ceolin، نويسنده , , M. and Battistoni، نويسنده , , G. and Benetti، نويسنده , , P. and Borio، نويسنده , , A. and Calligarich، نويسنده , , E. and Cambiaghi، نويسنده , , M. and Cavanna، نويسنده , , F. and Centro، نويسنده , , S. and Cocco، نويسنده , , A.G. and Dolfini، نويسنده , , R. and Gigli Berzolari، نويسنده , , A. and Farnese، نويسنده , , C. and Fava، نويسنده , , A. and Ferrari، نويسنده , , A. and Fiorillo، نويسنده , , G. and Gibin، نويسنده , , D. and Guglielmi، نويسنده , , A. and Mannocchi، نويسنده , , G. and Mauri، نويسنده , , F. and Menegolli، نويسنده , , A. and Meng، نويسنده , , G. and Montanari، نويسنده , , C. and Palamara، نويسنده , , O. and Periale، نويسنده , , L. and Picchi، نويسنده , , P. and Pietropaolo، نويسنده , , F. and Rappoldi، نويسنده , , A. and Raselli، نويسنده , , G.L. and Rossella، نويسنده , , M. and Rubbia، نويسنده , , C. and Sala، نويسنده , , P. and Satta، نويسنده , , G. and Varanini، نويسنده , , F. and Ventura، نويسنده , , S. and Vignoli، نويسنده , , C.، نويسنده ,
Abstract :
The paper is considering an opportunity for the CERN/GranSasso (CNGS) neutrino complex, concurrent time-wise with T2K and NOvA projects, with the aim of improving the sensitivity on νμ ↔ νe θ13 mixing angle by nearly an order of magnitude with respect to T2K expectations. The experiment is based on a ≈20 kt fiducial volume LAr-TPC, following very closely the technology developed for the ICARUS-T600.
esent preliminary proposal, called MODULAr, is focused on the following three main activities, for which we seek an extended international collaboration:
utrino beam from the CERN 400 GeV proton beam and an optimized horn focussing, eventually with an increased intensity in the framework of the LHC accelerator improvement programme.
experimental area LNGS-B, of at least 50,000 m3 at 10 km off-axis from the main laboratory, eventually upgradable to larger sizes. A location is under consideration at about 1.2 km equivalent water depth. The bubble chamber like imaging and the very fine calorimetry of the LAr-TPC detector will ensure the best background recognition not only from the off-axis neutrinos from the CNGS but also for proton decay and cosmic neutrinos.
LAr Imaging detector, at least initially with about 20 kt fiducial mass, realised with a modular set of four identical, but independent units, each of about 5 kt, “cloning” the basic technology of the T600. Further phases may foresee extensions of MODULAr to a mass required by the future physics goals.
ed with large water Cherenkov (T2K) and fine grained scintillators (NOvA), the LAr-TPC offers a higher detection efficiency for a given mass and lower backgrounds, since virtually all channels may be unambiguously recognized. In addition to the search for θ13 oscillations and CP violation, it would be possible to collect a large number of accurately identified cosmic ray neutrino events and perform search for proton decay in the exotic channels.
