dE/dx measurement in a He-based gas mixture (original) (raw)

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1998

Abstract

The performance of a prototype drift chamber operating in a He-based gas mixture as a specific ionisation detector is presented. In spite of the small number of primary ions, Helium performs quite satisfactorily in measuring energy losses for charged particles: with 50GeV/c pions, we have measured in a 90%He–10%iC4H10 mixture a relative energy loss resolution of 3.1% with 75 samples

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