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    Some results of test beam studies of Transition Radiation Detector prototypes at CERN
    (Iop Publishing Ltd, 2017) Tikhomirov, V. O.; Brooks, T.; Joos, M.; Rembser, C.; Celebi, E.; Gurbuz, S.; Çetin, Serkant Ali
    Operating conditions and challenging demands of present and future accelerator experiments result in new requirements on detector systems. There are many ongoing activities aimed to develop new technologies and to improve the properties of detectors based on existing technologies. Our work is dedicated to development of Transition Radiation Detectors (TRD) suitable for different applications. In this paper results obtained in beam tests at SPS accelerator at CERN with the TRD prototype based on straw technology are presented. TRD performance was studied as a function of thickness of the transition radiation radiator and working gas mixture pressure.
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    Test beam studies of the TRD prototype filled with different gas mixtures based on Xe, Kr, and Ar
    (Iop Publishing Ltd, 2017) Celebi, E.; Brooks, T.; Joos, M.; Rembser, C.; Gurbuz, S.; Çetin, Serkant Ali
    Towards the end of LHC Runl, gas leaks were observed in some parts of the Transition Radiation Tracker (TRT) of ATLAS. Due to these leaks, primary Xenon based gas mixture was replaced with Argon based mixture in various parts. Test-beam studies with a dedicated Transition Radiation Detector (TRD) prototype were carried out in 2015 in order to understand transition radiation performance with mixtures based on Argon and Krypton. We present and discuss the results of these test-beam studies with different active gas compositions.