# 2019 Meeting of the Division of Particles & Fields of the American Physical Society

July 29, 2019 to August 2, 2019
Northeastern University
US/Eastern timezone

## A measurement of the position resolution of RD53A modules using the SLAC testbeam

Jul 30, 2019, 5:10 PM
17m
West Village G 108 (Northeastern University)

### West Village G 108

#### Northeastern University

Oral Presentation Particle Detectors

### Speaker

Gang Zhang (Tsinghua University (CN))

### Description

Position resolution is a key property of the innermost layer of the upgraded ATLAS and CMS pixel detectors for determining track reconstruction and flavor tagging performance.  The 11 GeV electron beam at the SLAC End Station A was used to measure the position resolution of RD53A modules with a $50\times50$ and $25\times100\ \mu$m$^2$ pitch. Tracks are reconstructed from hits on telescope planes using the EUTelescope package.  The position resolution is extracted by comparing the extrapolated track and the hit position on the RD53A modules, correcting for the tracking resolution. 12.0 and 7.3 $\mu$m resolution can be achieved for the 50 and 25 $\mu$m directions, respectively, with a 13 degree tilt . This result provides important information for deciding between the two geometries for the upgraded pixel detectors.

### Primary authors

Gang Zhang (Tsinghua University (CN)) Ben Nachman (Lawrence Berkeley National Lab. (US))