The ATLAS TRT end-cap detectors
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KünyeAbat, E., Addy, T .N., Akesson, T. P. A., Alison, J., Anghinolfi, F., Arik, M. ... ATLAS Collaboration. (2008). The ATLAS TRT end-cap detectors. Journal of Instrumentation, 3(10), 1-66. http://dx.doi.org/10.1088/1748-0221/3/10/P10003
The ATLAS TRT end-cap is a tracking drift chamber using 245,760 individual tubular drift tubes. It is a part of the TRT tracker which consist of the barrel and two end-caps. The TRT end-caps cover the forward and backward pseudo-rapidity region 1.0 < |η| < 2.0, while the TRT barrel central η region |η| < 1.0. The TRT system provides a combination of continuous tracking with many measurements in individual drift tubes (or straws) and of electron identification based on transition radiation from fibers or foils interleaved between the straws themselves. Along with other two sub-system, namely the Pixel detector and Semi Conductor Tracker (SCT), the TRT constitutes the ATLAS Inner Detector. This paper describes the recently completed and installed TRT end-cap detectors, their design, assembly, integration and the acceptance tests applied during the construction.