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T: Fachverband Teilchenphysik
T 67: Pixeldetektoren 3
T 67.7: Vortrag
Dienstag, 28. März 2017, 18:15–18:30, VSH 116
Design of a Depleted Monolithic CMOS Pixel sensor in a 150 nm CMOS Technology for the ATLAS Inner Tracker Upgrade — Marlon Barbero2, Patrick Breugnon2, Yavuz Degerli3, Stephanie Godiot2, Fabrice Guilloux3, Tomasz Hemperek1, Toko Hirono1, Hans Krüger1, Jian Liu2, Fabienne Orsini2, Patrick Pangaud2, Alexandre Rozanov2, •Piotr Rymaszewski1, Philippe Schwemling3, Tianyang Wang1, and Norbert Wermes1 — 1University of Bonn, Bonn, Germany — 2CPPM, Marseille, France — 3CEA-IRFU, Saclay, France
During the long shutdown the LHC will undergo an upgrade allowing for a big increase in luminosity, which will have a huge impact on the operation of the inner tracking detectors. Within ATLAS CMOS Pixel Collaboration a "CMOS demonstrator" initiative has been started with the goal of qualifying available CMOS technologies to build high performance, cost efficient detectors. This works presents one of designed prototypes - a monolithic particle sensor named LFMonopix-01. This device, designed in LFoundry 150nm CMOS quadruple well process, features 250µm×50µm pixels organized into a matrix of 129×36 pixels. The design exploits high bias voltage and high wafer resistivity to allow for a quick charge collection through drift. Signal is amplified and shaped in-pixel, obtained information is readout using "column drain" architecture. During the talk an overview of the design will be presented with a special focus on some of the faced challenges e.g. low noise operation, fast signal processing, design verification. Simulation results will be compared with first measurement results.