MAUS: the MICE analysis user software

Abstract

A: The Muon Ionization Cooling Experiment (MICE) collaboration has developed the MICE Analysis User Software (MAUS) to simulate and analyze experimental data. It serves as the primary codebase for the experiment, providing for offline batch simulation and reconstruction as well as online data quality checks. The software provides both traditional particle-physics functionalities such as track reconstruction and particle identification, and accelerator physics functions, such as calculating transfer matrices and emittances. The code design is object orientated, but has a top-level structure based on the Map-Reduce model. This allows for parallelization to support live data reconstruction during data-taking operations. MAUS allows users to develop in either Python or C++ and provides APIs for both. Various software engineering practices from industry are also used to ensure correct and maintainable code, including style, unit and integration tests, continuous integration and load testing, code reviews, and distributed version control. The software framework and the simulation and reconstruction capabilities are described.

Muon Ionization Cooling Experiment (MICE): Results & Prospects

“…The apparatus proved to be stable over this time [1]. The experiment was modelled using a bespoke Geant4-based simulation [2].…”

Demonstration of cooling by the Muon Ionization Cooling Experiment

“…The momentum resolution of particles with a small helix radius in the tracker was improved by combining the TOF measurement of velocity with the measurement of momentum in the tracker. A detailed Monte Carlo simulation of the experiment was performed to study the resolution and efficiency of the instrumentation and to determine the expected performance of the cooling apparatus 49,50 . The simulation was found to give a good description of the data 40 .…”

“…The MAUS software 50 We gratefully acknowledge all sources of support. We are grateful for the support given to us by the staff of the STFC Rutherford Appleton and Daresbury laboratories.…”

Performance of the MICE diagnostic system

“…The ADC product distribution measured using a 300 MeV/𝑐 beam is compared to the MAUS [32] simulation of the detector response in figure 9. The simulation takes into account -8 - the light production distribution of the scintillating fibres, and the response of the PMTs for which the gain was approximately 2 × 10 6 .…”