Development of the kaon tagging system for the NA62 experiment at CERN

The NA62 experiment at CERN aims to make a precision measurement of the ultra-rare decay \(K^{+} \rightarrow \pi^{+}\nu\overline{\nu}\), and relies on a differential Cherenkov detector (KTAG) to identify charged kaons at an average rate of 50 MHz in a 750 MHz unseparated hadron beam. The experimenta...

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Bibliographic Details
Published in:arXiv.org 2015-09
Main Authors: Goudzovski, Evgueni, Krivda, Marian, Lazzeroni, Cristina, Massri, Karim, Newson, Francis O, Pyatt, Simon, Romano, Angela, Serghi, Xen, Sergi, Antonino, Staley, Richard J, Heath, Helen F, Page, Ryan F, Cassese, Antonio, Cooke, Peter A, Dainton, John B, Fry, John R, Fulton, Liam D J, Jones, Emlyn, Jones, Tim J, McCormick, Kevin J, Sutcliffe, Peter, Wrona, Bozydar
Format: Article
Language:English
Subjects:
Cerenkov counters
CERN
Decay
Hadrons
Kaons
Particle beams
Synchrotrons
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Summary:The NA62 experiment at CERN aims to make a precision measurement of the ultra-rare decay \(K^{+} \rightarrow \pi^{+}\nu\overline{\nu}\), and relies on a differential Cherenkov detector (KTAG) to identify charged kaons at an average rate of 50 MHz in a 750 MHz unseparated hadron beam. The experimental sensitivity of NA62 to K-decay branching ratios (BR) of \(10^{-11}\) requires a time resolution for the KTAG of better than 100 ps, an efficiency better than 95% and a contamination of the kaon sample that is smaller than \(10^{-4}\). A prototype version of the detector was tested in 2012, during the first NA62 technical run, in which the required resolution of 100 ps was achieved and the necessary functionality of the light collection system and electronics was demonstrated.
ISSN:2331-8422
DOI:10.48550/arxiv.1509.03773