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Scintillator

    A scintillator consists of a transparent material (liquid, plastics or crystal) where special substances are incorporated which emit a scintillation light flash if their atoms are excited by ionizing particles.
    The transparency enables to guide the light to a photo sensor (PMT or MPPC) connected to the scintillator. More details can be found in the Wikipedia article.

    The CosMO detectors consist of a plastics scintillator plate (20cm x 20cm x 1cm) where 9 fibers of 1mm diameter glued into the plate guide the light flash to the 3mm x 3mm surface of the multi pixel photon counter (MPPC).
    The muon detectors at the “Polarstern”, the Neumayer III station and the Trigger Hodoscope use plastics scintillator plates (25cm x 25cm x 1.5cm) with 8 fibers of 1.5mm diameter which were originally produced for the L3-Cosmic experiment at CERN.
    The LIDO experiment uses 12 liters of a liquid scintillator (EJ-321L, Eljen Technology). The main component is petroleum oil with additions of aromatic hydrocarbons and other components to produce the scintillation light.