Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 75: Detektorsysteme III

T 75.4: Talk

Wednesday, March 2, 2016, 17:30–17:45, VMP8 SR 205

FE-I4b Quad Module Serial Powering Stave Prototype for ATLAS ITk upgrade — •Viacheslav Filimonov, Laura Gonella, Fabian Hügging, and Norbert Wermes — University of Bonn, Bonn, Germany

ATLAS ITk is a new inner tracker that will be built for the Phase II upgrade in order to meet the requirements of increased Luminosity.

Current detector modules are powered according to the parallel (direct) powering scheme: each detector module is powered with an independent power supply and a set of cables. With this powering scheme modules can be operated individually, which is a big advantage. However, due to increased granularity of the detector more cables are needed for powering. Increased FE current consumption leads to increase in cable cross section. All these increases power losses in the cables as well as the amount of passive material in the active detector volume. Finally, it results into unwanted interactions of particles with the inactive part of the detector and degradation of the detection performance.

Solution is to use a new powering scheme, different from direct powering. Proposed options are Serial powering and DC-DC converters scheme.

The talk will focus on the investigation of the Serial powering scheme. It will describe a Serial Powering Stave Prototype that was built in Bonn using FE-I4b Quad Modules. Detailed investigation of the Stave performance in the Serial powering scheme will be shown.