The NA62 Gigatracker: Detector properties and pixel read-out architectures
(2010) Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment — Vol. 624, n° 2, p. 314-316 (2010)
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- 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 Elsevier B.V. All rights reserved.
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Fiorini, M., Carassiti, V., Ceccucci, A., Cortina, E., Cotta Ramusino, A., Dellacasa, G., Jarron, P., Kaplon, J., Kluge, A., Marchetto, F., Martin, E., Martoiu, S., Mazza, G., Noy, M., Petrucci, F., Riedler, P., Rivetti, A., & Tiuraniemi, S. (2010). The NA62 Gigatracker: Detector properties and pixel read-out architectures. Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 624(2), 314-316. https://doi.org/10.1016/j.nima.2010.03.095 (Original work published 2010)