Abstract
The T2K (Tokai-to-Kamioka) is a long baseline neutrino experiment designed to study various parameters that rule neutrino oscillations, with an intense beam of muon neutrinos. A near detector complex (ND280) is used to constrain non-oscillated flux and hence to predict the expected number of events in the far detector (Super-Kamiokande). The difference in the target material between the far (water) and near (scintillator, hydrocarbon) detectors leads to the main non-canceling systematic uncertainty for the oscillation analysis. In order to reduce this uncertainty a new water grid and scintillator detector, WAGASCI, has been proposed. The detector will be operated at the J-PARC neutrino beam line with the main physics goal to measure the charged current neutrino cross section ratio between water and hydrocarbon with a few percent accuracy. Further physics program may include high-precision measurements of different charged current neutrino interaction channels. The concept of the new detector will be covered together with the actual construction plan.
Highlights
The T2K (Tokai-to-Kamioka) is a long-baseline neutrino experiment in Japan with the main goal to study neutrino oscillations
Cells between the active bars are filled with a certain material, this design maximizes the fraction of the target material up to 80% level and provides good particle tracking capabilities allowing to reconstruct tracks emerging at large angles w.r.t. neutrino beam direction
In order to estimate the direction of reconstructed tracks, reduce background from neutrino interactions in muon range detectors (MRDs) doi:10.1088/1742-6596/675/1/012030
Summary
The T2K (Tokai-to-Kamioka) is a long-baseline neutrino experiment in Japan with the main goal to study neutrino oscillations. In the T2K oscillation analysis flux and cross section (model) parameters are largely constrained by the near detector (ND280) measurements [1]. As can be seen from the table the largest one is a noncanceling uncertainty related to the cross section model and is caused by the difference in the target material between the near (hydrocarbon, CH, as the active target) and far detectors (Super-Kamiokande, Super-K, water Cherenkov detector), and by the limited acceptance of ND280 (Super-K has 4π coverage). The new water-scintillator detector (WAGASCI, WAterGrid-SCIintilator-Detector) is proposed to reduce this systematic error with the approach similar to the one previously used to measure the Fe to CH neutrino cross section ratio with the INGRID detector (sandwich iron-scintillator detectors + “proton” module of pure hydrocarbon) of the. The neutrino energy spectrum is peaked at '0.7 GeV
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
