Estimation of the SONTRAC Detector Efficiency for Solar Flare Neutrons by Geant4 Monte Carlo Simulations

Details Estimation of the SONTRAC Detector Efficiency for Solar Flare Neutrons by Geant4 Monte Carlo Simulations Estimation of the SONTRAC Detector Efficiency for Solar Flare Neutrons by Geant4 Monte Carlo Simulations

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....6.3383d&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

Scientific paper

The SONTRAC (SOlar Neutron TRACking) instrument is designed to measure the direction and energy of neutrons in the energy range 20-250 MeV. The detection principle is based on single and double elastic scattering of neutrons off ambient protons within a blo ck of densely packed scintillating plastic fibers. This paper presents Geant4 computed estimates of the SONTRAC detector efficiency at different distances from the Sun, for a realistic solar neutron emission spectrum, and for different detector sizes. The calculations show that an instrument 20 cm on a side positioned at 1 AU can be as efficient as the COMPTEL instrument on the CGRO.

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