The use of silicon photomultipliers for improving the time resolution of an electromagnetic calorimeter based on lead tungstate crystals

M. S. Ippolitov; V. A. Lebedev; V. I. Manko; Yu. G. Sibiriak; A. V. Akindinov; A. S. Vodopyanov; N. V. Gorbunov; S. A. Zaporozhets; P. V. Nomokonov; I. A. Rufanov

doi:10.1134/S002044121701002X

The use of silicon photomultipliers for improving the time resolution of an electromagnetic calorimeter based on lead tungstate crystals

Autores: Ippolitov M.S.¹, Lebedev V.A.¹, Manko V.I.¹, Sibiriak Y.G.¹, Akindinov A.V.², Vodopyanov A.S.³, Gorbunov N.V.³, Zaporozhets S.A.³, Nomokonov P.V.³, Rufanov I.A.³
Afiliações:
1. National Research Centre Kurchatov Institute
2. Alikhanov Institute for Theoretical and Experimental Physics
3. Joint Institute for Nuclear Research
Edição: Volume 60, Nº 1 (2017)
Páginas: 28-34
Seção: Nuclear Experimental Technique
URL: https://ogarev-online.ru/0020-4412/article/view/159469
DOI: https://doi.org/10.1134/S002044121701002X
ID: 159469

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The use of S12572 MPPC silicon photomultipliers (Hamamatsu) for improving the timing characteristics of the PHOS electromagnetic calorimeter in the ALICE experiment at CERN is described. It is shown that by introducing an additional photodetector, that is, a silicon photomultiplier, it is possible, without worsening the energy resolution, to significantly improve the time resolution of the PHOS spectrometer from the current values of 3–4 ns to 150–200 ps.