Speaker
Massimiliano Fiorini
(CERN)
Description
The Gigatracker is a hybrid silicon pixel detector developed to track the highly intense NA62 hadron beam with a time resolution of 150 ps (rms). The beam spectrometer of the experiment is composed of three Gigatracker stations installed in vacuum in order to precisely measure momentum, time and direction of every traversing particle. Precise tracking demands a very low mass of the detector assembly (less than 0.5% X0 per station) in order to limit multiple scattering and beam hadronic interactions. Fluences of up to 2 x 10^14 1 MeV n eq. cm^-2 are expected during one year of operation, due to the high intensity beam (0.8-1.0 GHz in total, hence the detector name). The very low mass of the detector, the necessary operation in vacuum and the harsh radiation environment require a very efficient cooling system. The high rate and especially the high timing precision requirements are very demanding: two R&D options are ongoing and the corresponding prototype read-out chips have been recently designed and produced in 130 nm CMOS technology. One solution makes use of a constant fraction discriminator and on-pixel analogue-based time-to-digital-converter (TDC); the other comprises a digital-based TDC placed at the end of each pixel column and a time-over-threshold discriminator with time-walk correction technique. The current status of the R&D program is overviewed and preliminary results from the prototype read-out chips test are presented.
Summary (Additional text describing your work. Can be pasted here or give an URL to a PDF document):
Please find here the one page long summary:
http://mfiorini.web.cern.ch/mfiorini/abstract_vienna/abstract-long-MFiorini.pdf
Author
Massimiliano Fiorini
(CERN)
Co-authors
Alexander Kluge
(CERN)
Angelo Cotta Ramusino
(INFN Sezione di Ferrara, Italy)
Angelo Rivetti
(INFN Sezione di Torino, Italy)
Augusto Ceccucci
(CERN)
Eduardo Cortina
(UCL, Louvain-la-Neuve, Belgium)
Elena Martin Albarran
(UCL, Louvain-la-Neuve, Belgium)
Ferruccio Petrucci
(INFN Sezione di Ferrara, Italy)
Flavio Marchetto
(INFN Sezione di Torino, Italy)
Georg Nuessle
(UCL, Louvain-la-Neuve, Belgium)
Gianni Mazza
(INFN Sezione di Torino, Italy)
Giulio Dellacasa
(INFN Sezione di Torino, Italy)
Jan Kaplon
(CERN)
Matthew Noy
(CERN)
Petra Riedler
(CERN)
Pierre Jarron
(CERN)
Sakari Tiuraniemi
(CERN)
Sara Garbolino
(INFN Sezione di Torino, Italy)
Sorin Martoiu
(INFN Sezione di Torino, Italy)
Vittore Carassiti
(INFN Sezione di Ferrara, Italy)
