# VCI2016 - The 14th Vienna Conference on Instrumentation

Feb 15 – 19, 2016
Vienna University of Technology
Europe/Vienna timezone

## Measurement of the two track separation capability of hybrid pixel sensors

Not scheduled
15m
Vienna University of Technology

#### Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Board: 42
Poster Semiconductor Detectors

### Speaker

Dr Francisca Muñoz Sánchez (University of Manchester)

### Description

Large Hadron Collider experiments face new challenges in Run-2 conditions due to the increased beam energy, the interest for searches of new physics signals with higher jet p$_T$ and the consequent longer decay length of heavy hadrons. In this new scenario, the capability of the innermost pixel sensors to distinguish tracks in very dense environment becomes crucial for efficient tracking and flavour tagging performance. In this talk, we discuss the measurement of the two track separation capability of hybrid pixel sensors using the interaction particles out of the collision of high energy pions on a thin copper target. With this method we are able to evaluate the effect of merged hits in the sensors under test due to tracks closer than the sensor spatial granularity in terms of collected charge, multiplicity and reconstruction efficiency for different incidence angles and relative distances in between the DUT and the target. Two pixel detector technologies, 3D silicon and new planar from the qualification batch of the ATLAS-IBL detector, were studied.

### Primary authors

Dr Francisca Muñoz Sánchez (University of Manchester) Dr Marco Battaglia (University of California)

### Co-authors

Dr Alessandro La Rosa (MPI) Prof. Cinzia Da Vià (University of Manchester) Mr Nick Dann (University of Manchester) Ms Sheena Schier (University of California)