München 2019 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 26: Heavy-Ion Collisions and QCD Phases V

HK 26.5: Talk

Tuesday, March 19, 2019, 17:45–18:00, HS 15

Performance simulation of the Transition Radiation Detector of the CBM experiment — •Etienne Bechtel for the CBM collaboration — IKF , Frankfurt , Germany

The Compressed Baryonic Matter (CBM) experiment will access a wide range of physics observables for heavy-ion collisions in the region of high- est net-baryon densities. One of the core physics program is the study of rare dilepton channels, which was not precisely measured before with other experiments in this energy range. For this purpose a powerful electron iden- ti*cation, respectively a good pion suppression, is absolutely crucial. In ad- dition to the RICH detector the Transition Radiation Detector (TRD), will contribute to the electron identi*cation in the complete momentum range and is supposed to deliver the main identi*cation power for momenta above 6 GeV/c. The dE/dx measurement, in combination with the mass of the Time-Of-Flight (TOF) detector, also makes possible the separation of charge states of light nuclei, which is necessary for the CBM hypernuclei program. This talk will cover the newest results in the simulation of di*erent dielectron channels, including the measurement of the thermal radiation of the *reball itself, as well as the essential improvements on the whole TRD detector sim- ulation and reconstruction procedures, which allow to obtain a much more realistic description of test beam data with simulations. This work is supported by BMBF.