Abstract
The CALICE test beam calorimeters operated at the CERN SPS facility have collected a large sample of hadronic and electromagnetic showers with unprecedented granularity.The calorimeters and beam line instrumentation are modeled in the MOKKA framework and full simulation of the test beam experiment is performed using GEANT4. Digitization is applied to each calorimeter to account for detector effects and noise. The scintillator-based hadronic calorimeter (AHCAL) is the center of the studies reported in this paper. The most important validation of the detector modeling and calibration chain is the test of the calorimeter response linearity and resolution for a large range on incident beam energies. Electromagnetic showers are the most demanding test since the energy deposited per single tile in an electromagnetic shower is larger than in a hadronic shower for the same beam energy. Results of the calorimeter response to muons and positrons are discussed and compared to Monte Carlo (MC).The analysis of single pion showers, recorded with the AHCAL offer the unique possibility to test hadronic shower models using a number of different observables. Total energy and longitudinal profiles have been studied at first and compared with two available shower models in GEANT4. Results of the effect of the shower leakage on the reconstructed energy and energy resolution are presented. Furthermore, studies of shower separation are performed using event mixing techniques. Shower separation is critical for the performance of modern particle flow algorithms, which here for the first time can be tested on experimental data.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
