Forward scintillation hodoscope for nuclear fragment detection at the high acceptance dielectron spectrometer (HADES) setup
О. В. АндрееваRussian Academy of SciencesМ. Б. ГолубеваRussian Academy of SciencesF.F. GuberRussian Academy of SciencesA. IvashkinRussian Academy of SciencesA. KrásaNuclear Physics Institute ASCRA. KuglerNuclear Physics Institute ASCR, Rez, CZ25068, Czech RepublicA. KurepinInstitute for Nuclear Research, Russian Academy of Sciences, pr. Shestidesyatiletiya Oktyabrya 7a, Moscow, 117312, RussiaO. A. PetukhovRussian Academy of SciencesA.I. ReshetinInstitute for Nuclear Research, Russian Academy of Sciences, pr. Shestidesyatiletiya Oktyabrya 7a, Moscow, 117312, RussiaA. S. SadovskyInstitute for Nuclear Research, Russian Academy of Sciences, pr. Shestidesyatiletiya Oktyabrya 7a, Moscow, 117312, RussiaO. SvobodaNuclear Physics Institute ASCR, Rez, CZ25068, Czech RepublicYu. G. SobolevNuclear Physics Institute ASCRP. TlustýNuclear Physics Institute ASCRE. UsenkoInstitute for Nuclear Research, Russian Academy of Sciences, pr. Shestidesyatiletiya Oktyabrya 7a, Moscow, 117312, Russia
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The main characteristics of the forward scintillation hodoscope and readout electronics of the high acceptance dielectron spectrometer (HADES) at GSI (Darmstadt, Germany) are presented. Methods for adjustment and amplitude-time calibration of hodoscope detectors using cosmic rays and results of measurements of the Au + Au reaction at a beam energy of 1.24 GeV/nucleon are described. The use of the forward hodoscope for tagging the n + p reaction by means of the deuteron beam incident on a liquid hydrogen target is discussed. A procedure for determining the reaction plane angle in event-by-event analysis of the Au + Au reaction data (at 1.24 GeV/nucleon) is presented.
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