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NA62 spectrometer to search for K+ -> pi(+)v(v)over-bar

Author:
Shkarovskiy, S.  


Journal:
JOURNAL OF INSTRUMENTATION


Issue Date:
2017


Abstract(summary):

The NA62 experiment at CERN is aimed at measuring the ultra-rare decay K+ -> pi(+)v (v) over bar with 10% accuracy. Since the branching fraction of this decay is O(10(-10)), the detector must be able to suppress background events with branching ratios up to 10 orders of magnitude higher than the signal. In order to achieve this goal a set of modern detector systems has been designed and built. Among them is a low mass (similar to 1.8% X-0) spectrometer to detect charged kaon decay products. The spectrometer contains 7168 straw tubes operating in vacuum. The detector was successfully installed and commissioned in 2014-2015. The goal of this report is to give a general overview of the system. The track time resolution obtained from reconstructed data is also described.


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