Abstract

The LHCb Silicon Tracker uses detector ladders with readout strips with an effective length of up to 36 cm. Kapton interconnect cables of up to 54 cm in length are employed in between silicon sensors and front-end readout hybrids. Fast front-end readout electronics with a shaping time of around 25 ns are employed to avoid pile-up of events from consecutive LHC bunch crossings. An extensive measurement program as well as simulations has been carried out to study the expected noise performance of these detectors.

Highlights

  • The Silicon Tracker is part of the LHCb tracking system [1]

  • The measured noise performance from beam-tests is summarised in Figure 1, in which the equivalent noise charge (ENC) for each prototype ladder is shown as a function of the total strip capacitance

  • The linear dependence of the noise on the detector capacitance permits to calculate the expected noise performance for all types of detector ladders employed in the Silicon Tracker

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Summary

Introduction

The Silicon Tracker is part of the LHCb tracking system [1]. It comprises two detectors, both of which use silicon microstrip detectors. Abstract The LHCb Silicon Tracker uses detector ladders with readout strips with an effective length of up to 36 cm. Kapton interconnect cables of up to 54 cm in length are employed in between silicon sensors and front-end readout hybrids.

Results
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