Author/Authors :
Abe، نويسنده , , K. and Abgrall، نويسنده , , N. and Ajima، نويسنده , , Y. and Aihara، نويسنده , , H. and Albert، نويسنده , , J.B. and Andreopoulos، نويسنده , , C. and Andrieu، نويسنده , , B. and Anerella، نويسنده , , M.D. and Aoki، نويسنده , , S. and Araoka، نويسنده , , O. and Argyriades، نويسنده , , J. and Ariga، نويسنده , , A. and Ariga، نويسنده , , T. and Assylbekov، نويسنده , , S. and Autiero، نويسنده , , D. and Badertscher، نويسنده , , A.، نويسنده ,
Abstract :
Precise measurement of neutrino beam direction and intensity was achieved based on a new concept with modularized neutrino detectors. INGRID (Interactive Neutrino GRID) is an on-axis near detector for the T2K long baseline neutrino oscillation experiment. INGRID consists of 16 identical modules arranged in horizontal and vertical arrays around the beam center. The module has a sandwich structure of iron target plates and scintillator trackers. INGRID directly monitors the muon neutrino beam profile center and intensity using the number of observed neutrino events in each module. The neutrino beam direction is measured with accuracy better than 0.4 mrad from the measured profile center. The normalized event rate is measured with 4% precision.
Keywords :
Neutrino detector , Neutrino beam , Extruded scintillator , Neutrino oscillation , Wavelength shifting fiber , T2K
