First beam test of the Frankfurt prototype for the CBM TRD

As one of the key components in the CBM experiment, the Transition Radiation Detector (TRD) will play a significant role in the particle identification. A fast detector with double sided readout chambers[1] and a ALICE type of detector with both drift and amplification regions have been designed for the circumstance of high particle rates. We propose to build a fast detector with an amplification region only. Simulation studies combining dE/dx and transition radiation show that such a simple detector can fullfil the requirement of particle identification[2]. If such design can be realized and verified by more sophiscated studies and beam tests, it will noticeably reduce the cost and simplify the construction.