Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 58: Instrumentierung XII

HK 58.3: Vortrag

Donnerstag, 18. März 2010, 17:15–17:30, HG IX

Study on TR-Efficiency of the CBM Transition Radiation Detector — •Patrick Reichelt — Institut für Kernphysik Frankfurt

In the CBM experiment at FAIR, a Transition Radiation Detector (TRD) is foreseen for tracking and electron/pion discrimination. A thin gas volume without drift region is considered in order to have sufficiently fast readout for the intended high collision rates. This however compromises the TR-photon absorption efficiency, which is essential for electron identification. An approach of increasing the yield of TR-photons by selecting suitable materials for the readout pads of the detector, from which photons can be re-emitted, will be discussed. A study of this yield depending on pad material and thickness will be presented and compared to measurements at the ALICE TRD setup.

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