Vitaliy Kramarenko

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This Working Paper should not be reported as representing the views of the IMF. The views expressed in this Working Paper are those of the author(s) and do not necessarily represent those of the IMF or IMF policy. Working Papers describe research in progress by the author(s) and are published to elicit comments and to further debate. This paper studies the(More)
  • T. Akesson, Enis Arik, +70 authors A. Zalite
  • 2004
The ATLAS Transition Radiation Tracker (TRT) performance depends critically on the choice of the active gas and on its properties. The most important operational aspects, which have led to the final choice of the active gas for the operation of the TRT at the LHC design luminosity, are presented. The TRT performance expected at these conditions is reviewed,(More)
The ATLAS Inner Detector consists of three sub-systems, the Pixel Detector at the innermost radius, the SemiConductor Tracker at intermediate radii, and the Transition Radiation Tracker (TRT) at the outermost radius in front of the electromagnetic calorimeter. The TRT provides a combination of continuous tracking with many projective measurements based on(More)
  • T. Akesson, Enis Arik, +73 authors A. Zalite
  • 2004
Several prototypes of the Transition Radiation Tracker for the ATLAS experiment at the LHC have been built and tested at the CERN SPS accelerator. Results from detailed studies of the straw-tube hit registration efficiency and drifttime measurements and of the pion and electron spectra without and with radiators are presented. r 2004 Elsevier B.V. All(More)
We report on a direct search for sub-GeV dark photons (A^{'}), which might be produced in the reaction e^{-}Z→e^{-}ZA^{'} via kinetic mixing with photons by 100 GeV electrons incident on an active target in the NA64 experiment at the CERN SPS. The dark photons would decay invisibly into dark matter particles resulting in events with large missing energy. No(More)
Discogenic diseases of lumbo-sacral area are revealed in 38-44% of population. In the depertment of laser and endoscopic neurosurgery in the Institute of Neurosurgery n. after academician A. P. Romodanov AMSc of Ukraine intralaminar methodics in modification with use of laser was implemented in 1995. The aim of the study comprised in comparison of remote(More)
A prototype of the Transition Radiation Tracker (TRT) for the ATLAS detector at the LHC has been built and tested. The TRT is an array of straw tubes which integrate tracking and electron identi cation by transition radiation into one device. Results of experimental measurements and of comparisons with Monte Carlo simulations are presented for the electron(More)
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