The silicon pixel tracking system for the ATLAS experiment at the Large Hadron Collider is described and the performance requirements are summarized. Detailed descriptions of the pixel detector electronics and the silicon sensors are given. The design, fabrication, assembly and performance of the pixel detector modules are presented. Data obtained from test beams as well as studies using cosmic rays are also discussed.

The RD42 Collaboration R. Wedenig9,—, W. Adam, C. Bauer, E. Berdermann, P. Bergonzo, F. Bogani, E. Borchi, A. Brambilla, M. Bruzzi, C. Colledani, J. Conway, W. Dabrowski, P. Delpierre, A. Deneuville, W. Dulinski, B. van Eijk, A. Fallou, F. Fizzotti, F. Foulon, M. Friedl, K.K. Gan, E. Gheeraert, E. Grigoriev, G. Hallewell, R. Hall-Wilton, S. Han, F. Hartjes, J. Hrubec, D. Husson, H. Kagan, D. Kania, J. Kaplon, C. Karl, R. Kass, K.T. Knöpfle, M. Krammer, A. Logiudice, R. Lu, P.F. Manfredi, C. Manfredotti, R.D. Marshall, D. Meier, M. Mishina, A. Oh, L.S. Pan, V.G. Palmieri, M. Pernicka, A. Peitz, S. Pirollo, P. Polesello, K. Pretzl, M. Procario, V. Re, J.L. Riester, S. Roe, D. Roff, A. Rudge, O. Runolfsson, J. Russ, S. Schnetzer, S. Sciortino, V. Speziali, H. Stelzer, R. Stone, B. Suter, R.J. Tapper, R. Tesarek, M. Trawick, W. Trischuk, E. Vittone, A. Wagner, A.M. Walsh, P. Weilhammer, C. White, W. Zeuner, H. Ziock, M. Zoeller

A 2/3" 5 μm×5 μm pixel HDTV imager in a 0.25 μm CMOS process uses a tapered reset technique to suppress kT/C noise and supply 12b video with <15 e-read noise at 60, 72 and 90 Hz frame rates. Peak S/N ratio at 90 Hz (225 MHz video rate; 2.7 Gb/s at 12b/pixel) is 52 dB at standard scene illumination. Random noise at 18 dB gain is 8e-, independent of video frequency.