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Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 40: Detektorsysteme I

T 40.5: Talk

Tuesday, March 20, 2018, 17:30–17:45, Z6 - SR 2.007

Serial powering implementation and Readout for the ATLAS ITk Outer Barrel DemonstratorMatthias Hamer1, •Florian Hinterkeuser1, Fabian Huegging1, Jens Janssen1, Niklaus Lehmmann2, Susanne Kersten2, Susanne Kuehn3, and Klaus Desch11Universität Bonn — 2Universität Wuppertal — 3CERN

The high luminosity upgrade for the Large Hadron Collider at CERN requires a complete overhaul of the ATLAS detector. The current tracking detector will be replaced by an all-silicon tracking detector, the ITk. It will occupy the same volume as the current ATLAS tracker and will cover a significantly larger phase space.

The new ITk pixel detector will consist of multichip modules produced in 65 nm CMOS technology. Due to the significantly higher number of modules and the increased power consumption of the new FE chips, a parallel powering scheme is not feasible, such that a serial powering scheme will be implemented. In this scheme, modules are powered in series and supplied by a constant current source, reducing the amount of service cables needed to power the detector.

While the concept of serial powering has already been proven, a prototype for the ITk Pixel Outer Barrel with a representative support structure, services and number of modules per serial powering chain is currently being assembled at CERN. This talk will present an overview of the implementation of the serial powering scheme as well as the commissioning of that demonstrator using a USBPix based readout system.

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