The Transition Radiation Detector (TRD)  performs electron identification and triggering on electrons and jets, providing a trigger decision in about 7 microseconds.

TRD is composed of 522 detectors, arranged in 18 sectors in azimuth, each of 5 stacks in longitudinal direction, with 6 layers per stack. The diameter of the TRD cylinder is about 7 m and the length 7 m. It has 1.15 million channels of readout, each sampling the signal in 20 time bins. The active gas is a xenon-CO2 mixture.

Details of the working principle of TRD is in the link here.



TRD Documents

TRD Internal:

Photo Galleries

  • Project Leader: Johanna Stachel (Ruprecht Karls Universitaet Heidelberg (DE))

  • Deputy Project Leader: Anton Andronic (Westfaelische Wilhelms-Universitaet Muenster (DE))

  • Technical Coordinator: Benjamin Donigus (Goethe University Frankfurt (DE))

  • Offline Coordinator: Yvonne Pachmayer (Ruprecht Karls Universitaet Heidelberg (DE))

Participating Institutions: