Performance of the new amplifier-shaper-discriminator chip for the ATLAS MDT chambers at the HL-LHC

TL;DR

This paper presents the design, production, and testing of a new 8-channel amplifier-shaper-discriminator chip for the ATLAS Muon Detector upgrade, demonstrating its performance through detailed measurements and simulations.

Contribution

Introduction of a novel 8-channel ASD chip using IBM 130 nm CMOS technology, with comprehensive testing and simulation comparison for HL-LHC applications.

Findings

The chip achieves desired time resolution and gain uniformity.

Test results align well with simulation predictions.

The design meets the performance criteria for ATLAS MDT readout.

Abstract

The Phase-II Upgrade of the ATLAS Muon Detector requires new electronics for the readout of the MDT drift tubes. The first processing stage, the Amplifier-Shaper-Discriminator (ASD), determines the performance of the readout for crucial parameters like time resolution, gain uniformity, efficiency and noise rejection. An 8-channel ASD chip, using the IBM 130 nm CMOS 8RF-DM technology, has been designed, produced and tested. The area of the chip is 2.2 x 2.9 square mm size. We present results of detailed measurements as well as a comparision with simulation results of the chip behaviour at three different levels of detail.