Construction status of the Mu2e crystal calorimeter
The Mu2e experiment at Fermilab will search for the charged-lepton flavor violating neutrino-less conversion of a negative muon into an electron in the field of an aluminum nucleus. The Mu2e detector is composed of a tracker, an electromagnetic calorimeter and an external veto for cosmic rays. The calorimeter plays an important role in providing excellent particle identification capabilities and a fast online trigger filter, while aiding the track reconstruction capabilities. Calorimeter requirements are to provide a large acceptance for 0~10 MeV electrons and reach: i) a time resolution better than 0.5 ns; ii) an energy resolution better than 10%; and iii) a position resolution of 1 cm. The calorimeter consists of two disks, each one made of 674 pure CsI crystals. Each crystal is readout by two large area 2×3 arrays of UV-extended SiPMs of 6×6 mm2 dimensions. A large scale prototype (Module-0) has been tested at an electron beam. We report here the tests done to finalize the calorimeter design, the results obtained with Module-0 and the status of production. At this time, the performance characteristics of 85% of the crystals and all of the SiPMs have been measured. The calorimeter engineering drawings have been completed and the large mechanical components are under fabrication. Analog and digital electronics have been prototyped and tested with irradiation dose. Their serial production is being organized. The calorimeter assembly phase is planned for mid-2020.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1682278
- Report Number(s):
- FERMILAB-PUB-20-204-V; oai:inspirehep.net:1817826
- Journal Information:
- JINST, Vol. 15, Issue 09
- Country of Publication:
- United States
- Language:
- English
A search for μ-e conversion in muonic gold
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journal | May 2006 |
Lepton flavor and number conservation, and physics beyond the standard model
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journal | July 2013 |
Measurement of the energy and time resolution of a undoped CsI + MPPC array for the Mu2e experiment
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journal | May 2017 |
Design and test of the Mu2e undoped CsI + SiPM crystal calorimeter
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journal | August 2019 |
Commissioning of the DAΦNE beam test facility
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journal | December 2003 |
Electron beam test of the large area Mu2e calorimeter prototype
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journal | January 2019 |
Pre-production and quality assurance of the Mu2e calorimeter Silicon Photomultipliers
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journal | December 2018 |
Neutron irradiation test of Hamamatsu, SensL and AdvanSiD UV-extended SiPMs
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journal | March 2018 |
The Mu2e calorimeter: Quality assurance of production crystals and SiPMs
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journal | August 2019 |
Production and Quality Assurance of the Mu2e Calorimeter Silicon Photomultipliers
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journal | January 2019 |
Mu2e calorimeter readout system
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journal | August 2019 |
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