TEC/TRD for the PHENIX experiment

✍ Scribed by 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

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 499 KB
• Volume: 522
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2004.01.018

✦ Synopsis

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 ðdE=dxÞ 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=p separation with momenta ranging from 0.25 to 50 GeV=c: