Physics – Instrumentation and Detectors
Scientific paper
2010-07-15
Physics
Instrumentation and Detectors
8 pages, 3 figures, 1 table, 12 references
Scientific paper
The development of CMOS pixel sensors with column parallel read-out and integrated zero-suppression has resulted in a full size, nearly 1 Megapixel, prototype with ~100 \mu s read-out time. Its performances are quite close to the ILD vertex detector specifications, showing that the sensor architecture can presumably be evolved to meet these specifications exactly. Starting from the existing architecture and achieved performances, the paper will expose the details of how the sensor will be evolved in the coming 2-3 years in perspective of the ILD Detector Baseline Document, to be delivered in 2012. Two different devices are foreseen for this objective, one being optimized for the inner layers and their fast read-out requirement, while the other exploits the dimmed background in the outer layers to reduce the power consumption. The sensor evolution relies on a high resistivity epitaxial layer, on the use of an advanced CMOS process and on the combination of column-level ADCs with a pixel array. The paper will present how these aspects can be exploited to match the ILD VTX specifications. A status of the development of 3D CMOS devices will be mentioned for completeness.
Hu-Guo Christine
IPHC Collaboration
IRFU Collaboration
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