Hybrid assemblies of LHC1 read-out chips and 300 mu m 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 similar to 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 similar to 2 mu s delay. The 50 mu m x 50 mu m pixels yield a spatial precision of sigma = 129.4 +/- 0.2 mu m in the large pitch direction. In the other direction the precision is sigma = 12.2 +/- 0.2 mu m for single-pixel clusters and sigma = 8.2 +/- 0.2 mu m for double-pixel clusters, yielding an average of sigma = 11.4 +/- 0.2 mu m. Three different detector layouts on the same pitch were characterized. (C) 2000 Elsevier Science B.V. All rights reserved.
The LHC1 pixel detector studied in a 120 GeV/c pion test beam
DI BARI, Domenico;
2000-01-01
Abstract
Hybrid assemblies of LHC1 read-out chips and 300 mu m 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 similar to 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 similar to 2 mu s delay. The 50 mu m x 50 mu m pixels yield a spatial precision of sigma = 129.4 +/- 0.2 mu m in the large pitch direction. In the other direction the precision is sigma = 12.2 +/- 0.2 mu m for single-pixel clusters and sigma = 8.2 +/- 0.2 mu m for double-pixel clusters, yielding an average of sigma = 11.4 +/- 0.2 mu m. Three different detector layouts on the same pitch were characterized. (C) 2000 Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
