Abstract We present a large area, balloon borne, NaI(Tl) detector for low-energy gamma rays with temporal signature : FIGARO. The main detector is a mosaic of 12 NaI(Tl) tiles 22.5 × 15 × 5 cm, for a total geometric area of 4050 cm2. In the energy band 140 keV - 6 MeV, the expected background counting rate at float altitude is in the range of two to three thousands counts per second. For pulsar analysis the expected 3δ sensitivity for 5 hours exposition time is 2.5 10−4 ph/cm2.s.MeV (150–500 keV) 1.5 10−4 ph/cm2.s.MeV (1–6 MeV). This performance, together with the large effective area and the relatively short duration of a balloon flight, make FIGARO particularly suitable for the identification of sources by means of temporal analysis. For objectives in the Northern sky, including the Crab pulsar, a transmediterranean flight is planned for the summer of 1982 ; a Southern mission is scheduled in Brazil for the fall of 1983 (Vela, PSR 1822-09).


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    Titel :

    FIGARO: An experiment for pulsar and variable source studies in the MeV range


    Beteiligte:
    Costa, E. (Autor:in) / Salvati, M. (Autor:in) / Agnetta, G. (Autor:in) / Di Raffaele, R. (Autor:in) / Gerardi, G. (Autor:in) / Sacco, B. (Autor:in) / Scarsi, L. (Autor:in) / Massaro, E. (Autor:in) / Agrinier, B. (Autor:in) / Christi, J.C. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1983-01-01


    Format / Umfang :

    4 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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