Energy loss of pions and electrons of 1 to 6 GeV/c in drift chambers operated with Xe,CO2(15%)

Abstract

We present measurements of the energy loss of pions and electrons in drift chambers operated with a Xe,CO2(15%) mixture. The measurements are carried out for particle momenta from 1 to 6 GeV/c using prototype drift chambers for the ALICE TRD. Microscopic calculations are performed using input parameters calculated with GEANT3. These calculations reproduce well the measured average and most probable values for pions, but a higher Fermi plateau is required in order to reproduce our electron data. The widths of the measured distributions are smaller for data compared to the calculations. The electron/pion identification performance using the energy loss is also presented.

15 pages, 10 figures, accepted for publication in Nucl.Instrum.Meth. A

References in corpus (2)

• Pulse height measurements and electron attachment in drift chambers operated with Xe,CO2 mixtures
• Prototype tests for the ALICE TRD

Cited by in corpus (8)

• Transition Radiation Detectors
• The ALICE Transition Radiation Detector: construction, operation, and performance
• Electron identification performance with ALICE TRD prototypes
• A comprehensive study of rate capability in Multi-Wire Proportional Chambers
• Space charge in drift chambers operated with the Xe,CO2(15%) mixture
• Transition Radiation Spectra of Electrons from 1 to 10 GeV/c in Regular and Irregular Radiators
• Position Reconstruction in Drift Chambers operated with Xe, CO2 (15%)
• Transition Radiation Spectroscopy with Prototypes of the ALICE TRD