TEC/TRD for the PHENIX experiment

• DOI: 10.1016/j.nima.2004.01.018
• Publication Date: 2004-02-21T10:23:26Z
• Authors: K.N. Barish; S. Botelho; W.C. Chang; O. Dietzsch; A. Franz; S.Y. Fung; L. Kotchenda; D. Kotchetkov; P. Kravtsov; A. Lebedev; X.H. Li; J. Mahon; S. Mioduszewski; M. Muniruzzaman; B. Nandi; E. O'Brien; R.P. Pisani; M. Rosati; R. Seto; C.L. Silva; E.M. Takagui; W. Xie; X. Zong
• Keywords: Tracking (education); Ranging; Momentum (technical analysis); Particle identification; Particle (ecology)

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 .