Speaker
            
    Sergei Movchan
        
            (Joint Institute for Nuclear Research (JINR))
        
    Description
The P326 proposal of a new experiment NA62 aiming to perform precise measurement of the very rare kaon decay $K^+ \to \pi^+ \nu \bar{\nu}$ branching ratio at CERN is described. About 80 $K^+ \to \pi^+ \nu \bar{\nu}$ events with 10% of background is planned to obtain in two years of data taking. To reconstruct charged pion tracks with high efficiency and high resolution a single magnet spectrometer based on straw tubes and working in vacuum should be design and produce. The current status of R&D of this detector and results of its prototype testing are discussed.
            Author
        
            
                
                
                    
                        Sergei Movchan
                    
                
                
                        (Joint Institute for Nuclear Research (JINR))
                    
            
        
    
        