Performance of the NOMAD-STAR detector

Runolfsson, O. et al. (2003) Performance of the NOMAD-STAR detector. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 506(3), 217 -237. (doi:10.1016/S0168-9002(03)01379-2)

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The NOMAD-STAR detector is a silicon vertex detector installed in the NOMAD spectrometer at the CERN SPS neutrino beam. It consists of four layers of a passive boron carbide target with a total mass of 45 kg and five layers of 600 single-sided silicon microstrip detectors covering a total area of 1.14 m<sup>2</sup>. About 11,500 ν<sub>μ</sub> charged current interactions were reconstructed in the fiducial volume of NOMAD-STAR from the neutrino run in 1998. The potential use of silicon detectors for ν<sub>μ</sub>(ν<sub>e</sub>) lt - gt ν<sub>τ</sub> oscillations depends on the observation of the τ candidates by the experimental signature of a large impact parameter, in the case of the one prong decay of the τ, or a double vertex, in the case of the three prong decay. The main aim of NOMAD-STAR is to measure the impact parameter and vertex distributions of charged current interactions, which constitute the main backgrounds for the oscillation signals, to understand the significance of a potential signal in a future experiment. The present paper describes the experience gained in the operation of this silicon vertex detector, and the performance achieved with it.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Soler, Professor Paul
Authors: Runolfsson, O., Barichello, G., Cervera-Villanueva, A., Daniels, D.C., do Couto e Silva, E., Ellis, M., Ferrere, D., Gomez-Cadenas, J.J., Gossling, C., Gouanere, M., Hernando, J.A., Huta, W., Kokkonen, J., Kuznetsov, V.E., Linssen, L., Lisowski, B., Long, J., Lupi, A., Schmidt, B., Soler, F.J.P., Steele, D., Stipcevic, M., Vidal-Sitjes, G., and Veltri, M.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
ISSN (Online):1872-9576

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