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Measurements of the Electromagnetic Calorimeter Prototype Parameters of COMET Experiment Using Cosmic Muons

  • PHYSICS OF ELEMENTARY PARTICLES AND ATOMIC NUCLEI. EXPERIMENT
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Abstract

In the COMET experiment, the electromagnetic calorimeter will be assembled on long LYSO:Ce crystals. The distribution of the light yield in such crystals is not uniform along the length and volume. This will lead to the non-uniformity of the calorimeter detector response and to a deterioration in the energy resolution. Therefore, to obtain a high energy resolution of the electromagnetic calorimeter, it is necessary to take into account the light yield non-uniformity of the scintillators. In this work, for the calorimeter prototype of the COMET experiment, the non-uniformity of the detector response along the crystal length and at the incidence angles of cosmic muons relative to the scintillators end surfaces of 9° and 19° was measured. An estimate of the energy resolution of the calorimeter of the COMET experiment was obtained, which is 4% for straight tracks and 6% for tracks at an angle of 19°.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, 141980, Dubna, Russia

    V. Kalinnikov & E. Velicheva

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  1. V. Kalinnikov
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  2. E. Velicheva
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Correspondence to E. Velicheva.

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Kalinnikov, V., Velicheva, E. Measurements of the Electromagnetic Calorimeter Prototype Parameters of COMET Experiment Using Cosmic Muons. Phys. Part. Nuclei Lett. 19, 225–234 (2022). https://doi.org/10.1134/S1547477122030098

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  • DOI: https://doi.org/10.1134/S1547477122030098

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