Author/Authors :
E. and Berkien، نويسنده , , A. and Deppe، نويسنده , , H. and Dupree، نويسنده , , Jacques T. M. Van Eijk، نويسنده , , D. and Fanizzi، نويسنده , , G. and Heine، نويسنده , , E. and Jansen، نويسنده , , F. Carl Knopf، نويسنده , , J. Lee Pellegrino-Gensey، نويسنده , , A. and Rausch، نويسنده , , A. and Rovekamp، نويسنده , , J. and Rusnyak، نويسنده , , R. and Schipper، نويسنده , , J.D. and Schwemmer، نويسنده , , R. and Simioni، نويسنده , , E. and Sluijk، نويسنده , , T. and Stadler، نويسنده , , R. and Stange، نويسنده , , U. and Storaci، نويسنده , , B. and Terrier، نويسنده , , H. and Thobe، نويسنده , , P. and Timmer، نويسنده , , P. and Tuning، نويسنده , , N. and Trunk، نويسنده , , U. and Uwer، نويسنده , , U. and Wiedner، نويسنده , , D. de Zwart، نويسنده , , A.، نويسنده ,
Abstract :
The LHCb experiment is a single-arm spectrometer, designed to study B-hadron decays at the Large Hadron Collider (LHC). It is crucial to accurately and efficiently track the charged decay products with the Outer Tracker straw tube detector, in the high-density particle environment of the LHC. The Outer Tracker Front End electronics provide the precise (0.5 ns) drift-time measurement, at an average occupancy of 5% and at a 1 MHz trigger rate. The tracking procedure requires high-efficiency, while at the same time putting stringent limits on the noise level. The mass production and installation of 450 fully operational Front End boxes is completed. Quality checks have been performed at several stages, at the level of individual boards and at the global level with dedicated test systems mimicking the real detector and capable of simulating all the readout functionalities. An excellent overall threshold uniformity is achieved with low noise levels.
