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Title: Progress status for the Mu2e calorimeter system

Journal Article · · Journal of Physics. Conference Series
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  1. Univ. of Pisa, Pisa (Italy); INFN sezione di Pisa, Pisa (Italy)
  2. Joint Institute for Nuclear Research, Dubna (Russia)
  3. INFN sezione di Pisa, Pisa (Italy)
  4. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  5. INFN Lab. Nazionali di Frascati, Frascati (Italy)
  6. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  7. INFN sezione di Lecce, Lecce (Italy)
+ Show Author Affiliations

The Mu2e experiment at FNAL aims to measure the charged-lepton flavor violating neutrinoless conversion of a negative muon into an electron. The conversion results in a monochromatic electron with an energy slightly below the muon rest mass (104.97 MeV). The calorimeter should confirm that the candidates reconstructed by the extremely precise tracker system are indeed conversion electrons while performing a powerful $$\mu/e$$ particle identification. Moreover, it should also provide a high level trigger for the experiment independently from the tracker system. The calorimeter should also be able to keep functionality in an environment where the background delivers a dose of ~ 10 krad/year in the hottest area and to work in the presence of 1 T axial magnetic field. These requirements translate in the design of a calorimeter with large acceptance, good energy resolution O(5%) and a reasonable position (time) resolution of ~<1 cm (<0.5ns). The baseline version of the calorimeter is composed by two disks of inner (outer) radius of 351 (660) mm filled by 1860 hexagonal $$BaF_2$$ crystals of 20 cm length. Each crystal is readout by two large area APD's. In this study, we summarize the experimental tests done so far as well as the simulation studies in the Mu2e environment.

Research Organization:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1249520
Report Number(s):
FERMILAB-CONF-15-050-PPD; 1344899
Journal Information:
Journal of Physics. Conference Series, Vol. 587, Issue 1; Conference: 16th International Conference on Calorimetry in High Energy Physics, Giessen (Germany), 6-11 Apr 2014; ISSN 1742-6588
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

References (5)

New Constraint on the Existence of the μ + → e + γ Decay journal May 2013
Charged Lepton Flavor Violation Experiments journal November 2008
The BABAR detector
  • Aubert, B.; Bazan, A.; Boucham, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 479, Issue 1 https://doi.org/10.1016/S0168-9002(01)02012-5
journal February 2002
Laser monitoring system for the CMS lead tungstate crystal calorimeter
  • Anfreville, M.; Bailleux, D.; Bard, J. P.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 594, Issue 2 https://doi.org/10.1016/j.nima.2008.01.104
journal September 2008
Offline Software for the Mu2e Experiment journal December 2012

Cited By (4)

The next generation of crystal detectors journal December 2017
The Next Generation of Crystal Detectors journal February 2015
The next generation of crystal detectors conference September 2015
The Next Generation of Crystal Detectors preprint January 2013

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