Measurement of the front-end dead-time of the LHCb muon detector and evaluation of its contribution to the muon detection inefficiency

TL;DR

This paper presents a method to measure the dead-time of the LHCb muon detector's front-end electronics, which is crucial for understanding its detection efficiency at current and future collider luminosities.

Contribution

It introduces a novel measurement technique to determine dead-time from luminosity-dependent data, enabling performance estimation at higher bunch-crossing rates.

Findings

Dead-time ranges from 70 ns to 100 ns.

Method allows dead-time estimation at 40 MHz bunch-crossing rate.

Results inform detector performance at higher luminosities.

Abstract

A method is described which allows to deduce the dead-time of the front-end electronics of the LHCb muon detector from a series of measurements performed at different luminosities at a bunch-crossing rate of 20 MHz. The measured values of the dead-time range from 70 ns to 100 ns. These results allow to estimate the performance of the muon detector at the future bunch-crossing rate of 40 MHz and at higher luminosity.