Author/Authors :
J. and Ropotar، نويسنده , , I. and Buis، نويسنده , , E.-J. and Antinori، نويسنده , , F. and Barberis، نويسنده , , D. and Becks، نويسنده , , K.H. and Beker، نويسنده , , H. and Burger، نويسنده , , P. and Campbell، نويسنده , , M. and Cantatore، نويسنده , , E. and Casagrande، نويسنده , , L. and Catanesi، نويسنده , , M.G. and Chesi، نويسنده , , E. and Corsi، نويسنده , , F. and DʹAuria، نويسنده , , S. and Da Via، نويسنده , , C. and Danielyan، نويسنده , , V، نويسنده ,
Abstract :
Hybrid assemblies of LHC1 read-out chips and 300 μm thick silicon pixel detectors have been tested with a 120 GeV/c pion beam at the CERN SPS. The equivalent noise charge at the input of the preamplifier is ∼200 e−. The particle detection efficiency is higher than 99.9%. A 30 ns wide efficiency plateau is reached for a 60 ns wide trigger pulse applied after a ∼2 μs delay. The 50 μm×50 μm pixels yield a spatial precision of σ=129.4±0.2 μm in the large pitch direction. In the other direction the precision is σ=12.2±0.2 μm for single-pixel clusters and σ=8.2±0.2 μm for double-pixel clusters, yielding an average of σ=11.4±0.2 μm. Three different detector layouts on the same pitch were characterized.
Keywords :
Silicon , Test beam , pixel , detector
