摘要 :
This work reviews the status of the international OPERA experiment aimed at searching for the νμ→ ντ oscillation. Development of the emulsion techniques in the preceding DONUT and CHORUS experiments is described. A brief over...
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This work reviews the status of the international OPERA experiment aimed at searching for the νμ→ ντ oscillation. Development of the emulsion techniques in the preceding DONUT and CHORUS experiments is described. A brief overview of the NOMAD experiment is given, in which properties of ντ interactions were thoroughly investigated. Characteristics of the CERN-Gran Sasso (CNGS) neutrino beam are given, the structure of the OPERA hybrid detector and the functions of its subsystems are considered, and the automatic emulsion scanning technique is briefly reviewed. Uncertainties in reconstruction of event parameters using the electronic and emulsion detectors are discussed and the procedure adopted in the experiment for identification of ντ interactions is described. The main sources of background in the search for νμ → ντ oscillation are considered. Topologies of the first two ντ candidates observed in the OPERA emulsion detector are presented. Possibilities of increasing the ντ interaction selection efficiency using multidimensional criteria are briefly discussed.
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摘要 :
The author considers the methodology to control staff motivation abroad on example of the USA, Japan and Europe. The concept of work motivation is studied. The classification of motivation mechanisms into material and immaterial i...
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The author considers the methodology to control staff motivation abroad on example of the USA, Japan and Europe. The concept of work motivation is studied. The classification of motivation mechanisms into material and immaterial is given. General components of a modern universal approach to motivation are formulated. The native component of the motivation process is analysed. The ways to borrow foreign management practice are proposed.
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摘要 :
Simulation of the interactions between tau neutrinos v_τ and the material of the emulsion trackdetector using Geant4 software is described. The purpose of the work is to generate artificial events and toestimate, on their basis, ...
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Simulation of the interactions between tau neutrinos v_τ and the material of the emulsion trackdetector using Geant4 software is described. The purpose of the work is to generate artificial events and toestimate, on their basis, the reconstruction accuracy for the geometric parameters (vertex coordinates,impact parameters, and track kink angles) and distributions of these parameters used in the selection criteriaof the OPERA experiment.
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