Figaro II experiment: description and technical performance

Details Figaro II experiment: description and technical performance Figaro II experiment: description and technical performance

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989nimpa.281..197a&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 281, Issue 1, p. 197-206.

Physics

11

Scientific paper

The FIGARO II (French Italian GAmma Ray Observatory) experiment designed to observe cosmic sources with a well established time signature is described. It consists of a large-area (3600 cm2) array of nine tiles of NaI(Tl), actively shielded against the environmental background, to be operated at high altitude by means of a stratospheric balloon for the detection of celestial gamma rays in the energy band 0.17-6.0 MeV. The performance of this experiment derived from calibrations with radioactive sources and flight data is presented.
The actual sensitivity allows the detection of a pulsed signal with a flux of 5×10-5 ph/(cm2s MeV) (~ 6% of the Crab pulsar flux), in the whole energy band at 3 standard deviations in an observation time of 6 hours.

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