Test of prototypes of the ALICE silicon pixel detector in a multi-track environment

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

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 276 KB
• Volume: 565
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2006.04.094

✦ Synopsis

The silicon pixel detector (SPD) comprises the two innermost layers of the ALICE Inner Tracking System (ITS). It is instrumented with arrays of hybrid pixels made out of 150 mm thick ASICs, each containing 8192 readout cells, bump bonded to 200 mm thick silicon sensors. The dimensions of the pixel cells are 50 mm (rj) Â 425 mm (z). Prototype assemblies have been tested in high-energy particle beams at the CERN SPS. The results of measurements in a multi-track environment, from interactions of an In beam at 158 AGeV on a Pb target, are reported.