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Träfflista för sökning "WFRF:(Nesterov S. Y.) srt2:(2005)"

Sökning: WFRF:(Nesterov S. Y.) > (2005)

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  • Cwetanski, P, et al. (författare)
  • Acceptance tests and criteria of the ATLAS transition radiation tracker
  • 2005
  • Ingår i: IEEE Transactions on Nuclear Science. - : IEEE - Institute of Electrical and Electronics Engineers Inc.. - 0018-9499. ; 52:6, s. 2911-2916
  • Tidskriftsartikel (refereegranskat)abstract
    • The Transition Radiation Tracker (TRT) sits at the outermost part of the ATLAS Inner Detector, encasing the Pixel Detector and the Semi-Conductor Tracker (SCT). The TRT combines charged particle track reconstruction with electron identification capability. This is achieved by layers of xenonfilled straw tubes with periodic radiator foils or fibers providing TR photon emission. The design and choice of materials have been optimized to cope with the harsh operating conditions at the LHC, which are expected to lead to an accumulated radiation dose of 10 Mrad and a neutron fluence of up to 2 . 10(14) n/cm(2) after ten years of operation. The TRT comprises a barrel containing 52 000 axial straws and two end-cap parts with 320 000 radial straws. The total of 420 000 electronic channels (two channels per barrel straw) allows continuous tracking with many projective measurements (more than 30 straw hits per track). The assembly of the barrel modules in the US has recently been completed, while the end-cap wheel construction in Russia has reached the 50% mark. After testing at the production sites and shipment to CERN, all modules and wheels undergo a series of quality and conformity measurements. These acceptance tests survey dimensions, wire tension, gas-tightness, high-voltage stability and gas-gain uniformity along each individual straw. This paper gives details on the acceptance criteria and measurement methods. An overview of the most important results obtained to-date is also given.
  • Dedkov, Y S, et al. (författare)
  • Correlations in the electronic structure of half-metallic ferromagnetic CrO2 films: An x-ray absorption and resonant photoemission spectroscopy study
  • 2005
  • Ingår i: Physical Review B (Condensed Matter and Materials Physics). - : American Physical Society. - 1098-0121. ; 72:6
  • Tidskriftsartikel (refereegranskat)abstract
    • The electronic structure of high-quality CrO2(100) films was investigated by means of x-ray absorption and resonant photoemission spectroscopy at the 2p-3d excitation threshold. The obtained binding energy of the occupied Cr 3d states is in agreement with the results predicted within the local spin-density approximation using the dynamical mean-field theory [L. Craco , Phys. Rev. Lett. 90, 237203 (2003)]. The reported data support a model of CrO2 as a half-metallic ferromagnet with strong electron-correlation effects.
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