Design and Commissioning of Readout Electronics for a $K_L^0$ and $\mu$ Detector at the Belle II Experiment

TL;DR

This paper details the design, implementation, and commissioning of the readout electronics for the upgraded KLM detector at Belle II, enhancing particle detection capabilities with new electronics and software.

Contribution

It introduces novel readout electronics, firmware, and software specifically developed for the upgraded scintillators and resistive-plate chambers in the KLM detector.

Findings

Successful commissioning of the readout electronics system.

Improved data acquisition from scintillators and chambers.

Enhanced detector performance for Belle II experiment.

Abstract

The K-long and muon detector (KLM) constitutes the outer-most volume of the Belle II spectrometer at the interaction region of the SuperKEKB collider in Tsukuba, Japan. The KLM detector was partially upgraded since the Belle experiment by replacing many of its resistive-plate chambers with scintillators containing wavelength-shifting fibers and instrumenting it with silicon photomultipliers. We describe the readout electronics, firmware, and software created to control and acquire data from the scintillators and resistive-plate chambers.