Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2000-02-07
Nucl.Instrum.Meth. A450 (2000) 1-11
Physics
High Energy Physics
High Energy Physics - Experiment
34 pages, 8 figures
Scientific paper
10.1016/S0168-9002(00)00247-3
A conceptual scheme of a hybrid-emulsion spectrometer for investigating various channels of neutrino oscillations is proposed. The design emphasizes detection of $\tau$ leptons by detached vertices, reliable identification of electrons, and good spectrometry for all charged particles and photons. A distributed target is formed by layers of low-Z material, emulsion-plastic-emulsion sheets, and air gaps in which $\tau$ decays are detected. The tracks of charged secondaries, including electrons, are momentum-analyzed by curvature in magnetic field using hits in successive thin layers of emulsion. The $\tau$ leptons are efficiently detected in all major decay channels, including \xedec. Performance of a model spectrometer, that contains 3 tons of nuclear emulsion and 20 tons of passive material, is estimated for different experimental environments. When irradiated by the $\nu_\mu$ beam of a proton accelerator over a medium baseline of $
Asratyan A. E.
Davidenko G. V.
Dolgolenko A. G.
Kaftanov V. S.
Kubantsev M. A.
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