Measurements of the T2K neutrino beam properties using the INGRID on-axis near detector

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Research output: Contribution to journalArticlepeer-review

96 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)211-223
Number of pages13
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume694
DOIs
StatePublished - Dec 1 2012
Externally publishedYes

Bibliographical note

Funding Information:
In addition, the participation of individual researchers and institutions in the construction of the T2K experiment has been further supported by funds from the European Research Council ; the Japan Society for the Promotion of Science Fellowship for Foreign Researchers program ; the U.S. Department of Energy Outstanding Junior Investigator (OJI) Program and Early Career program ; and the A.P. Sloan Foundation .

Funding Information:
We thank the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) for their support for T2K. The T2K neutrino beamline, the ND280 detector and the Super-Kamiokande detector have been built and operated using funds provided by the MEXT, Japan ; the Natural Sciences and Engineering Research Council of Canada , TRIUMF , the Canada Foundation for Innovation , and the National Research Council, Canada ; Commissariat à l'Energie Atomique , and Centre National de la Recherche Scientifique – Institut National de Physique NuclLeaire et de Physique des Particules, France ; Deutsche Forschungsgemeinschaft, Germany ; Istituto Nazionale di Fisica Nucleare, Italy ; the Polish Ministry of Science and Higher Education, Poland ; the Russian Academy of Sciences , the Russian Foundation for Basic Research , and the Ministry of Education and Science of the Russian Federation, Russia ; the National Research Foundation , and the Ministry of Education, Science and Technology of Korea, Korea ; Centro Nacional De Física De Partículas , Astropartículas y Nuclear , and Ministerio de Ciencia e Innovacion, Spain ; the Swiss National Science Foundation and the Swiss State Secretariat for Education and Research, Switzerland ; the Science and Technology Facilities Council, U.K. ; and the Department of Energy, U.S.A .

Keywords

  • Extruded scintillator
  • Neutrino beam
  • Neutrino detector
  • Neutrino oscillation
  • T2K
  • Wavelength shifting fiber

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