Author/Authors :
Barish، نويسنده , , K.N. and Botelho، نويسنده , , S. and Chang، نويسنده , , W.C. and Dietzsch، نويسنده , , O. and Franz، نويسنده , , A. and Fung، نويسنده , , S.Y. and Kotchenda، نويسنده , , L. and Kotchetkov، نويسنده , , Traian D. and Kravtsov، نويسنده , , P. and Lebedev، نويسنده , , A. and Li، نويسنده , , X.H. and Mahon، نويسنده , , J. and Mioduszewski، نويسنده , , S. and Muniruzzaman، نويسنده , , M. and Nandi، نويسنده , , B. and OʹBrien، نويسنده ,
Abstract :
The TEC/TRD is a set of large multi-wire tracking chambers in the PHENIX experiment with fiber radiators in front of the tracking volume. It provides charged-particle pattern recognition, momentum measurement and particle identification through determinations of both ionization energy loss (dE/dx) and associated transition radiation (TR) photons. A custom front-end electronics is instrumented with a dual-gain system to read out the dE/dx and the TR events. A recirculating gas system for the Xe-based mixture is developed. The device will be fully operational starting in December 2003. It will provide e/π separation with momenta ranging from 0.25 to 50 GeV/c.
Keywords :
Ionization loss , Transition radiation , Xenon recovery system , Multi-wire chambers
