A high-performance silicon tracker for the Compressed Baryonic Matter experiment at FAIR |
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Authors: | Johann M Heuser Walter FJ Muller Peter Senger Christian Muntz Joachim Stroth |
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Institution: | (1) Gesellschaft fur Schwerionenforschung mbH (GSI), Planck-Str. 1, 64291 Darmstadt, Germany;(2) Institut fur Kernphysik, Johann Wolfgang Goethe-Universitat Frankfurt am Main, Max von Laue-Str. 1, 60438 Frankfurt/Main, Germany |
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Abstract: | The Compressed Baryonic Matter (CBM) experiment is a fixed-target heavy-ion experiment planned at GSI's future international
Facility for Antiproton and Ion Research (FAIR). CBM will study strongly interacting matter at high baryon densities where
the QCD phase diagram is poorly known. The experiment applies a detector concept new to heavy-ion physics: All charged particles
as well as secondary vertices from heavy-flavor decays are exclusively reconstructed in a high-performance silicon tracking
system. It will be installed in a magnetic dipole field between the target and further detection systems for particle identification
and calorimetry. High track densities and high collision rates require the application of most advanced silicon detectors.
The technological challenges include high position resolution in thinnest possible pixel and microstrip sensors, combined
with extreme radiation hardness, fast self-triggered readout and ultra low-mass mechanical supports. The article outlines
the physics and detector concept of CBM and discusses the performance requirements of the silicon tracker and the beginning
R&D.
for the CBM collaboration
Presented in the Poster Session “Future Experiments and Facilities” at the 18th International Conference “Quark Matter 2005”,
Budapest, Hungary, 4–9 August 2005. |
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Keywords: | FAIR compressed baryonic matter CBM open charm silicon tracker pixel microstrip radiation hardness low-mass detector data-push readout |
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