Measurements of the T2K neutrino beam properties using the INGRID on-axis near detector
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Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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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. © 2012 Elsevier B.V. All rights reserved.
AuthorsAbe, KA; Abgrall, NP; Ajima, YR; Aihara, HA; Albert, JBM; Andreopoulos, CA; Andrieu, BA; Anerella, MDF; Aoki, SA; Araoka, OR; Argyriades, JP; Ariga, AC; Ariga, TC; Assylbekov, SK; Autiero, DA; Badertscher, AO; Barbi, MA; Barker, GJB; Barr, GA; Bass, MK; Batkiewicz, MQ; Bay, FC; Bentham, SA; Berardi, VV; Berger, BEK; Bertram, IA; Besnier, MN; Beucher, JH; Beznosko, DA; Bhadra, SB; Blaszczyk, FDMH; Blocki, JQ; Blondel, AP; Bojechko, CB; Bouchez, JB; Boyd, SBB; Bravar, AP; Bronner, CN; Brook-Roberge, DGE; Buchanan, NK; Budd, HA; Calvet, DH; Cartwright, SLA; Carver, AB; Castillo, RS; Catanesi, MGV; Cazes, AA; Cervera, AT; Chavez, CA; Choi, SA; Christodoulou, GA; Coleman, JA; Collazuol, GX; Coleman, WA; Connolly, KB; Curioni, AO; Dabrowska, AQ; Danko, IA; Das, RK; Davies, GSA; Davis, SB; Day, MA; De Rosa, GW; De André, JPAMN; De Perio, PA; Dealtry, TAA; Delbart, AH; Densham, CA; Di Lodovico, FA; Di Luise, SO; Dinh Tran, PN; Dobson, JU; Dore, UY; Drapier, ON; Dufour, FP; Dumarchez, JA; Dytman, SA; Dziewiecki, MB; Dziomba, MB; Emery, SH; Ereditato, AC; Escallier, JEF; Escudero, LT; Esposito, LSO; Fechner, MHM; Ferrero, AP; Finch, AJA; Frank, EC; Fujii, YR; Fukuda, YA; Galymov, VB; Ganetis, GLF; Gannaway, FCA; Gaudin, AB; Gendotti, AO; George, MA; Giffin, SA; Giganti, CS; Gilje, KA; Ghosh, AKF; et al.
- Particle Physics 
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Abe, KAB; Abgrall, NP; Ajima, YRB; Aihara, HAB; Albert, JBM; Andreopoulos, CA; Andrieu, BA; Anerella, MDF; Aoki, SA; Araoka, ORB;... (2012-02-22)We report a measurement of muon-neutrino disappearance in the T2K experiment. The 295-km muon-neutrino beam from Tokai to Kamioka is the first implementation of the off-axis technique in a long-baseline neutrino oscillation ...
Indication of electron neutrino appearance from an accelerator-produced off-axis muon neutrino beam Abe, KA; Abgrall, NP; Ajima, YB; Aihara, HA; Albert, JBM; Andreopoulos, CA; Andrieu, BA; Aoki, SA; Araoka, OB; Argyriades, JP;... (2011-07)The T2K experiment observes indications of νμ→ν e appearance in data accumulated with 1.43×1020 protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario ...
Abe, KA; Abgrall, NP; Aihara, HA; Ajima, YR; Albert, JBM; Allan, DA; Amaudruz, P-AA; Andreopoulos, CA; Andrieu, BA; Anerella, MDF;... (2011-06-07)The T2K experiment is a long baseline neutrino oscillation experiment. Its main goal is to measure the last unknown lepton sector mixing angle θ13 by observing νe appearance in a νμ beam. It also aims to make a precision ...