MISTRAL & ASTRAL: two CMOS Pixel Sensor architectures suited to the Inner Tracking System of the ALICE experiment

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Published 16 January 2014 © 2014 IOP Publishing Ltd and Sissa Medialab srl
, , Citation F Morel et al 2014 JINST 9 C01026 DOI 10.1088/1748-0221/9/01/C01026

1748-0221/9/01/C01026

Abstract

A detector, equipped with 50 μm thin CMOS Pixel Sensors (CPS), is being designed for the upgrade of the Inner Tracking System (ITS) of the ALICE experiment at LHC. Two CPS flavours, MISTRAL and ASTRAL, are being developed at IPHC aiming to meet the requirements of the ITS upgrade. The first is derived from the MIMOSA28 sensor designed for the STAR-PXL detector. The second integrates a discriminator in each pixel to improve the readout speed and power consumption. This paper will describe in details the sensor development and show some preliminary test results.

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10.1088/1748-0221/9/01/C01026