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T: Fachverband Teilchenphysik

T 64: Halbleiterdetektoren IV

T 64.7: Talk

Thursday, March 31, 2011, 18:15–18:30, 30.21: 001

Low material trackers for high energy physics experiments at upgraded luminosities — •Laura Gonella, Fabian Hügging, and Norbert Wermes — Physikalisches Institut Uni Bonn, Bonn, Germany

Reducing material in silicon trackers is of major importance for a good detector performance overall, and poses a big challenge in the development of the inner detectors. To match the low material desirable for trackers in High Energy Physics experiments at upgraded luminosities, special techniques have to be developed to address the main sources of material, i.e. mechanical structure and services, and to prevent new significant contributions to the detector material coming for instance from larger Front-End chips. In this framework three methods are developed to reduce the material added by services and electronics: (1) serial powering, (2) light weight aluminum flex cables and Through Silicon Vias, and (3) thin Front-End chips. The development of these methods, as well as the achievable gain in terms of x/X0 will be presented using the upgrades of the ATLAS pixel detector as an example of application.