Hadron detection with a dual-readout fiber calorimeter

S. Lee, A. Cardini, M. Cascella, S. Choi, G. Ciapetti, R. Ferrari, S. Franchino, M. Fraternali, G. Gaudio, S. Ha, J. Hauptman, H. Kim, A. Lanza, F. Li, M. Livan, E. Meoni, J. Park, F. Scuri, A. Sill, R. Wigmans

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

In this paper, we describe measurements of the response functions of a fiber-based dual-readout calorimeter for pions, protons and multiparticle “jets” with energies in the range from 20 to 180 GeV. The calorimeter uses lead as absorber material and has a total mass of 1350 kg. It is complemented by leakage counters made of scintillating plastic, with a total mass of 500 kg. The effects of these leakage counters on the calorimeter performance are studied as well. In a separate section, we investigate and compare different methods to measure the energy resolution of a calorimeter. Using only the signals provided by the calorimeter, we demonstrate that our dual-readout calorimeter, calibrated with electrons, is able to reconstruct the energy of proton and pion beam particles to within a few percent at all energies. The fractional widths of the signal distributions for these particles (σ∕E) scale with the beam energy as 30%∕E, without any additional contributing terms.

Keywords

  • Dual-readout calorimetry
  • Optical fibers
  • Čerenkov light

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