Energy loss of pions and electrons of 1– in drift chambers operated with Xe,CO2(15%)

Autor: O. V. Fateev, V. Cătănescu, R. Santo, L. Smykov, V. I. Yurevich, B. Vulpescu, H. Stelzer, D. Emschermann, G. Tsiledakis, V. Petracek, T. Mahmoud, Anton Andronic, W. Ludolphs, Taku Gunji, Volker Lindenstruth, M. Inuzuka, H. Appelshäuser, R.S. Simon, Johanna Stachel, Oliver Busch, Christoph Blume, H. K. Soltveit, C. Xu, Johannes Peter Wessels, H. Daues, E. Kislov, O. Zaudtke, N. Herrmann, C. Garabatos, D. Bucher, Rainer Martin Schicker, Peter Braun-Munzinger, Andres Sandoval, M. Ciobanu, Y. Foka, Yu.V. Zanevsky, I. Rusanov, Mihai Petrovici, Bernd Stefan Windelband
Rok vydání: 2004
Předmět:
Zdroj: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 519:508-517
ISSN: 0168-9002
DOI: 10.1016/j.nima.2003.11.036
Popis: We present measurements of the energy loss of pions and electrons in drift chambers (DC) operated with a Xe,CO 2(15%) mixture. The measurements are carried out for particle momenta from 1 to 6 GeV /c using prototype DC for the ALICE transition radiation detectors. 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.
Databáze: OpenAIRE
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