Performance of ALICE pixel prototypes in high energy beams

Anelli, G.; Antinori, F.; Badala, A.; Bruno, G.E.; Burns, M.; Cali, I.A.; Campbell, M.; Caselle, M.; Ceresa, S.; Chochula, P.; Cinausero, M.; Conrad, J.; Dima, R.; Elia, D.; Fabris, D.; Fini, R.A.; Fioretto, E.; Kapusta, S.; Kluge, A.; Krivda, M.; Lenti, V.; Librizzi, F.; Lunardon, M.; Manzari, V.; Morel, M.; Moretto, S.; Nilsson, P.; Osmic, F.; Pappalardo, G.S.; Paticchio, V.; Pepato, A.; Prete, G.; Pulvirenti, A.; Riedler, P.; Riggi, F.; Sandor, L.; Santoro, R.; Scarlassara, F.; Segato, G.; Soramel, F.; Stefanini, G.; Torcato de Matos, C.; Turrisi, R.; Vannucci, L.; Viesti, G.; Virgili, T.

research

Performance of ALICE pixel prototypes in high energy beams

Abstract

The two innermost layers of the ALICE inner tracking system are instrumented with silicon pixel detectors. Single chip assembly prototypes of the ALICE pixels have been tested in high energy particle beams at the CERN SPS. Detection efficiency and spatial precision have been studied as a function of the threshold and the track incidence angle. The experimental method, data analysis and main results are presented.Comment: 10 pages, 9 figures, contribution to PIX2005 Workshop, Bonn (Germany), 5-8 September 200