CERN Accelerating science

Published Articles
Title	The Gigatracker of the NA62 experiment at CERN
Author(s)	Kleimenova, Alina (Cathol. U. Louvain (main)) ; Perrin-Terrin, Mathieu (CERN) ; Aglieri Rinella, Gianluca (CERN) ; Feito, Diego Alvarez (CERN) ; Bonacini, Sandro (CERN) ; Ceccucci, Augusto (CERN) ; Degrange, Jordan (CERN) ; Federici, Luca (CERN) ; Gamberini, Enrico (CERN) ; Kaplon, Jan (CERN) ; Kluge, Alexander (CERN) ; Mapelli, Alessandro (CERN) ; Morel, Michel (CERN) ; Noël, Jérôme (CERN) ; Noy, Matthew (CERN) ; Perktold, Lukas (CERN) ; Petagna, Paolo (CERN) ; Poltorak, Karolina (CERN) ; Romagnoli, Giulia (CERN) ; Minucci, Elisa (Frascati) ; Ruggiero, Giuseppe (Pisa, Scuola Normale Superiore) ; Velghe, Bob (Louvain U., CP3) ; Arcidiacono, Roberta (INFN, Turin ; Turin U.) ; Biino, Cristina (INFN, Turin ; Turin U.) ; Marchetto, Flavio (INFN, Turin) ; Migliore, Ernesto (INFN, Turin ; Turin U.) ; Chiozzi, Stefano (INFN, Ferrara) ; Cotta Ramusino, Angelo (Ferrara U. ; INFN, Ferrara) ; Fiorini, Massimiliano (Ferrara U. ; INFN, Ferrara) ; Gianoli, Alberto (Ferrara U. ; INFN, Ferrara) ; Malaguti, Roberto (INFN, Ferrara) ; Petrucci, Ferruccio (INFN, Ferrara) ; Wahl, Heinrich (Ferrara U.) ; Cortina Gil, Eduardo (Cathol. U. Louvain (main))
Publication	SISSA, 2020
Number of pages	7
In:	PoS EPS-HEP2019 (2020) 106
In:	European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.106
DOI	10.22323/1.364.0106
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN SPS ; NA62
Abstract	NA62 is a fixed-target experiment at the CERN SPS designed to measure the branching ratio of the very rare kaon decay $K^{+} \rightarrow \pi^{+}\nu \bar{\nu}$ with 10% precision. Measurements of time, momentum and direction of incoming beam particles are provided by a beam spectrometer called GigaTracker. The GigaTracker is made of three stations of hybrid silicon pixel detector installed in vacuum ($\sim10^{-6}$ mbar). Each station consists of 18000 pixels of $300\times300\mu m^{2}$ area each, arranged in a matrix of $200\times90$ elements corresponding to a total area of $62.8\times27mm^{2}$. The beam particles, flowing at 750 MHz, are tracked in 4-dimensions by means of time-stamping pixels with the single hit time resolution reaching 115 ps. This performance has to be maintained despite the beam irradiation amounting to a yearly fluence of $4.5\times 10^{14} 1MeV n_{eq}/cm^{2}/200\ days$. In order to limit multiple scattering and beam hadronic interactions, the station material budget is reduced to $0.5\%X_{0}$ by using micro channel cooling (first application in HEP). We will present the detector design and performances during the NA62 data taking periods.
Copyright/License	© The Authors (License: CC-BY-NC-ND-4.0)

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