We describe a muon track reconstruction algorithm for the reactor anti-neutrino experiment Double Chooz. The Double Chooz detector consists of two optically isolated volumes of the liquid scintillator viewed by PMTs, and an Outer Veto above these made of crossed scintillator strips. Muons are reconstructed by their Outer Veto hit positions along with timing information from the other two detector volumes. All muons are fit under the hypothesis that they are through-going and ultrarelativistic. If the energy depositions suggest that the muon may have stopped, the reconstruction fits also for this hypothesis and chooses between the two via the relative goodness-of-fit. In the ideal case of a through-going muon intersecting the center of the detector, the resolution is ~40mm in each transverse dimension. High quality muon reconstruction is an important tool for reducing the impact of the cosmogenic isotope background in Double Chooz.
|Original language||English (US)|
|Number of pages||10|
|Journal||Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|
|State||Published - Nov 11 2014|
Bibliographical noteFunding Information:
We thank the French electricity company EDF; the European fund FEDER; the Région de Champagne Ardenne; the Département des Ardennes; and the Communauté des Communes Ardennes Rives acknowledge the support from the CEA, CNRS/IN2P3, the computer center CCIN2P3, and LabEx UnivEarthS in France (ANR-11-IDEX-0005-02); the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) and the Japan Society for the Promotion of Science (JSPS) ; the Department of Energy and the National Science Foundation of the United States ; the Ministerio de Ciencia e Innovación (MICINN) of Spain ; the Max Planck Gesellschaft , and the Deutsche Forschungsgemeinschaft DFG (SBH WI 2152) , the Transregional Collaborative Research Center TR27 , the excellence cluster “Origin and Structure of the Universe” , and the Maier-Leibnitz-Laboratorium Garching in Germany ; the Russian Academy of Science, the Kurchatov Institute and RFBR (the Russian Foundation for Basic Research) ; the Brazilian Ministry of Science, Technology and Innovation (MCTI) , the Financiadora de Estudos e Projetos (FINEP) , the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) , the São Paulo Research Foundation (FAPESP) , and the Brazilian Network for High Energy Physics (RENAFAE) in Brazil .
- Double Chooz
- Muon reconstruction
- Neutrino detector