10th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors, Xi'an, China

Performance of silicon pixel detectors at small track incidence angles

28 Sept 2015, 10:50

20m

International Hall (International Conference Center (Nanyang Hotel))

ORAL Applications in High Energy Physics New Materials, New Technologies, Radiation Damage, Environmental Monitoring, Applications in Space

Speaker

Simon Viel (Lawrence Berkeley National Lab. (US))

Description

In order to enable the ATLAS experiment to successfully track charged particles produced in high-energy collisions at the High-Luminosity Large Hadron Collider, the current ATLAS Inner Detector will be replaced by the Inner Tracker (ITk), entirely composed of silicon pixel and strip detectors. An extension of the tracking coverage of ITk to very forward pseudorapidity values is proposed, using pixel modules placed in a long cylindrical layer around the beam pipe. The measurement of long pixel clusters, detected when charged particles cross the silicon sensor at small incidence angles, has potential to significantly improve the tracking efficiency, fake track rejection, and resolution of ITk in the very forward region. The performance of state-of-the-art pixel modules at small track incidence angles is studied using test beam data collected at SLAC and CERN, as well as simulated data.

Presentation materials

sviel_HSTD_sep29.pdf