CaltechAUTHORS
Published July 2023 | Version Published
Journal Article Metadata-only

The Mu2e Crystal and SiPM Calorimeter: Construction Status

Creators

  • 1. ROR icon Joint Institute for Nuclear Research
  • 2. ROR icon California Institute of Technology
  • 3. ROR icon National Laboratory of Frascati
  • 4. ROR icon INFN Sezione di Pisa
  • 5. ENEA—Frascati, 00044, Frascati, Italy
  • 6. ROR icon University of Pisa
  • 7. ROR icon INFN Sezione di Lecce
  • 8. ROR icon Marconi University
  • 9. ROR icon INFN Sezione di Ferrara
  • 10. ROR icon INFN Sezione di Trieste

Abstract

The Mu2e experiment at Fermilab searches for the neutrino-less conversion of a negative muon into an electron, with a distinctive signature of a mono-energetic electron with an energy of 104.967 MeV. The calorimeter is made of two disks of pure CsI crystals, each read out by two custom large-area UV-extended silicon photomultipliers (SiPMs). It plays a fundamental role in providing excellent particle identification capabilities and an online trigger filter while improving the track reconstruction, requiring better than 10% energy and 500 ps timing resolutions for 100 MeV electrons. In this article, we present the status of construction and the quality control (QC) performed on the produced crystals and photosensors, the development of the rad-hard electronics, and the most important results of the irradiation tests. Construction of the mechanics is also reported. Status and plans for the calorimeter assembly and its first commissioning are described.

Copyright and License

 © 2023 IEEE.

Acknowledgement

The authors are grateful for the vital contributions of the Fermilab staff and the technical staff of the participating institutions. This document was prepared by members of the Mu2e Collaboration using the resources of the Fermi National Accelerator Laboratory (Fermilab), a US Department of Energy, Office of Science, HEP User Facility.

Funding

This work was supported in part by the US Department of Energy; in part by the Istituto Nazionale di Fisica Nucleare, Italy; in part by the Science and Technology Facilities Council, U.K.; in part by the Ministry of Education and Science, Russian Federation; in part by the National Science Foundation, USA; in part by the National Science Foundation, China; in part by the Helmholtz Association, Germany; and in part by the EU Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie Grant through Agreement 734303, Agreement 822185, Agreement 858199, Agreement 101003460, and Agreement 101006726. Fermilab is managed by Fermi Research Alliance, LLC (FRA), acting under Contract DE-AC02-07CH11359.

Additional details

Related works

Is new version of
Discussion Paper: arXiv:2401.15609 (arXiv)

Funding

United States Department of Energy
Istituto Nazionale di Fisica Nucleare
Science and Technology Facilities Council
The Ministry of Education and Science of the Russian Federation
National Science Foundation
National Natural Science Foundation of China
Helmholtz Association of German Research Centres
EU Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie
734303
EU Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie
822185
EU Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie
858199
EU Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie
101003460
EU Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie
101006726
Fermi Research Alliance, LLC (FRA), acting
DE-AC02-07CH11359

Dates

Accepted
2023-03-31
Available
2023-04-05
Published
Available
2023-07-18
Current version

Caltech Custom Metadata

Caltech groups
CMS@Caltech, Division of Physics, Mathematics and Astronomy (PMA)
Publication Status
Published