Innovative energy reconstruction algorithm for hadron calorimeter

We have developed and studied a new, simple, physically motivated, non-parametrical method of the hadron energy reconstruction for a combined calorimeter. It uses only the known values of non-compensation (e/h ratios) and the electron calibration constants of the electromagnetic and hadronic compartments of a calorimeter. The method has been tested on the basis of the experimental data of the ATLAS barrel prototype combined calorimeter exposed to the electron and pion beams of energies from 10 to 300 GeV of the CERN SPS. The reconstructed mean values of the hadron energies are within ±1% of the true values that is at the level of the best multiparametrical method of the energy reconstruction. The fractional energy resolution is 58%/√E + 2.5%. The algorithm can be used for the fast energy reconstruction in the first level trigger and for the data analysis from the modern combined calorimeters like the ATLAS, CMS detectors at the LHC and the CDF, D0 at the TEVATRON