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Dear Jacobus Willem Van Hoorne,

The submission of your abstract has been successfully processed.

Abstract submitted: https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts.

Status of your abstract: https://indico.cern.ch/event/192695/call- for-abstracts/284/.

See below a detailed summary of your submitted abstract:

Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics

Submitted by: VAN HOORNE, Jacobus Willem

Submitted on: 26 February 2014 16:18

Title: The upgrade of the ALICE Inner Tracking System - Status of the R&D on monolithic silicon pixel sensors

Abstract content As a major part of its upgrade plans, the ALICE experiment schedules the installation of a novel Inner Tracking System (ITS) during the Long Shutdown 2 of the LHC in 2018/19. It will replace the present silicon tracker with 7 layers of Monolithic Silicon Active Pixel Sensors (MAPS) and significantly improve the detector performance in terms of tracking and rate capabilities. The choice of technology has been guided by the tight requirements on the material budget of 0.3 X$_{0}$ for the three innermost layers and backed by the significant progress in the field of MAPS in recent years.

The new ITS will in total cover a surface of 10.3 m$^2$ with approximately 25 $\times$ 10$^9$ pixels. The pixel chips are manufactured in the TowerJazz 180 nm CMOS imaging sensor process on wafers with high resistivity epitaxial layer. Within the ongoing R&D phase, several sensor chip prototypes have been developed and produced on different epitaxial layer thicknesses and resistivities. These chips are being characterised for their performances before and after irradiation using source tests, test beam and measurements using an infrared laser.

The present contribution will provide an overview of the ALICE ITS upgrade with a focus on the R&D activities on the pixel chip.

Summary

Primary Authors: VAN HOORNE, Jacobus Willem (Vienna University of Technology (AT)) j.w.van.hoorne@cern.ch

Co-authors:

Abstract presenters: VAN HOORNE, Jacobus Willem

Track classification: Experiments: 2a) Experiments & Upgrades

Presentation type: Oral

Comments: the presentation would be held on behalf of the ALICE collaboration