HEP2026: 42nd Conference on Recent Developments in High Energy Physics and Cosmology [NTUA] Jul 8 – 11, 2026

TestBeam Performance Studies of the ATLAS BCM’ Detector for the HL‑LHC Phase‑II Upgrade

Jul 8, 2026, 5:30 PM

20m

Main Hall (Level 1) (National Technical University of Athens)

Detectors

Speaker

Muhammad Basir Khan (Jozef Stefan Institute (SI))

Description

The Beam Conditions Monitor (BCM’) is part of the Phase-II upgrade of the ATLAS detector for operation at the High-Luminosity Large Hadron Collider (HL-LHC). To evaluate the performance of the BCM’ detector, beam-test measurements have been carried out at the CERN SPS using the six-plane MALTA telescope. Data acquisition is performed with the DRS4 readout system, while track reconstruction and detector alignment are carried out using the Proteus framework. The reconstructed particle tracks are used to determine the hit detection efficiency, while the recorded analogue waveforms are analysed to evaluate the detector signal response and timing performance, including the time-of-arrival (ToA) and time-over-threshold (ToT) of the ATLAS-18 silicon mini-strip sensor read out by the Calypso ASIC under beam conditions. This contribution presents the beam-test setup, the data acquisition and reconstruction workflow, and preliminary results on detection efficiency and signal timing performance, providing important input for the validation of the BCM’ detector for the ATLAS Phase-II upgrade.

Presentation materials

Preliminary testbeam results for the BCM’ 3-chip module.pdf