A range telescope technique for particle discrimination and energy reconstruction

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Abstract

We present an analysis technique (“range method”) that optimizes particle discrimination and enables energy reconstruction using a sampling detector. The method is a powerful extension of the well known dEdx - E technique in which the energy loss rate measured by several scintillator layers is fitted on the theoretical energy-range curves. The general features of the method will be discussed and its application to nuclear physics investigations at intermediate energies with the DAPHNE detector. Momentum reconstruction for protons with a resolution of ΔPP = 2.5−10% (FWHM) in the range P = 300–900 MeV/c has been obtained.

References (7)

  • G. Audit

    Nucl. Instr. and Meth. A

    (1991)
  • H. Herminghaus

    Nucl. Instr. and Meth

    (1976)
  • I. Anthony

    Nucl. Instr. and Meth. A

    (1991)
There are more references available in the full text version of this article.

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1

Present address SPhN-DAPNIA CEN Saclay, 91191 Gif sur Yvette, France.

2

Present address Institut für Kernphysik, Universität Mainz, W-6500, Mainz, Germany.

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