Author: Velten, P.
Paper Title Page
THPFI056 Design Study for a Future LAGUNA-LBNO Long-baseline Neutrino Facility at CERN 3418
 
  • I. Efthymiopoulos, J. Alabau-Gonzalvo, A. Alekou, F. Antoniou, M. Benedikt, M. Calviani, A. Ferrari, R. Garoby, F. Gerigk, S.S. Gilardoni, B. Goddard, A. Kosmicki, C. Lazaridis, J.A. Osborne, Y. Papaphilippou, A.S. Parfenova, E.N. Shaposhnikova, R. Steerenberg, P. Velten, H. Vincke
    CERN, Geneva, Switzerland
 
  A de­sign study for a long base­line neu­trino os­cil­la­tion ex­per­i­ment (LBNO) with a new con­ven­tional neu­trino beam­line fa­cil­ity (CN2PY) at CERN was ini­ti­ated in Sep­tem­ber 2011, sup­ported by EU/FP7 funds. The beam will be aimed at a next gen­er­a­tion deep-un­der­ground neu­trino ob­ser­va­tory lo­cated at the Py­hasalmi (Fin­land) mine at a dis­tance of 2300 km. In an ini­tial phase the CN2PY fa­cil­ity will use a 400 GeV beam ex­tracted from SPS up to a max­i­mum power of 750 kW, and in a sec­ond phase a 2 MW beam of about 50 GeV pro­duced by a new High-Power Pro­ton Syn­chro­tron ac­cel­er­a­tor using the LP-SPL as in­jec­tor also under de­sign. The paper will focus on the de­sign chal­lenges of this MW-class fa­cil­ity and on the op­ti­miza­tion stud­ies of the sec­ondary beam el­e­ments (tar­get and horns) to pro­duce a neu­trino beam spec­trum that matches best the ex­per­i­men­tal re­quire­ments for neu­trino fla­vor os­cil­la­tions and CP-vi­o­la­tion tests. The chal­lenges and bot­tle­necks in the ex­ist­ing CERN ac­cel­er­a­tor com­plex to pro­duce the high-in­ten­sity beams fore­seen for this fa­cil­ity at the ini­tial phase are dis­cussed.