The beam spectrometer of the NA62 experiment, named Gigatracker, has to perform single track reconstruction with unprecedented time resolution (150 ps rms) in a harsh radiation environment. To meet these requirements, and in order to reduce material budget to a minimum, three hybrid silicon pixel detector stations will be installed in vacuum. An adequate strategy to compensate for the discriminator time-walk must be implemented and R&D investigating two different options is ongoing. Two read-out chip prototypes have been designed in order to compare their performance: one approach is based on the use of a constant-fraction discriminator followed by an on-pixel TDC, while the other one is based on the use of a time-over-threshold circuit followed by a TDC shared by a group of pixels. This paper describes the Gigatracker system, presents the global architectures of both read-out ASICs and reviews the current status of the R&D project.

The NA62 Gigatracker: Detector properties and pixel read-out architectures

FIORINI, Massimiliano;CARASSITI, Vittore;COTTA RAMUSINO, Angelo;PETRUCCI, Ferruccio Carlo;
2010

Abstract

The beam spectrometer of the NA62 experiment, named Gigatracker, has to perform single track reconstruction with unprecedented time resolution (150 ps rms) in a harsh radiation environment. To meet these requirements, and in order to reduce material budget to a minimum, three hybrid silicon pixel detector stations will be installed in vacuum. An adequate strategy to compensate for the discriminator time-walk must be implemented and R&D investigating two different options is ongoing. Two read-out chip prototypes have been designed in order to compare their performance: one approach is based on the use of a constant-fraction discriminator followed by an on-pixel TDC, while the other one is based on the use of a time-over-threshold circuit followed by a TDC shared by a group of pixels. This paper describes the Gigatracker system, presents the global architectures of both read-out ASICs and reviews the current status of the R&D project.
2010
Fiorini, Massimiliano; Carassiti, Vittore; A., Ceccucci; E., Cortina; COTTA RAMUSINO, Angelo; G., Dellacasa; P., Jarron; J., Kaplon; A., Kluge; F., Ma...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1483713
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