We report the results of recent calibration data analysis of a prototype scintillating fiber tracking detector system designed to perform imaging, spectroscopy and particle identification on 20 to 250 MeV neutrons and protons. We present the neutron imaging concept and briefly review the detection principle and the prototype description. The prototype detector system records ionization track data on an event-by-event basis allowing event selection criteria to be used in the off-line analysis. Images of acrylic phantoms from the analysis of recent proton beam calibrations are presented as demonstrations of the particle identification, imaging and energy measurement capabilities. The measured position resolution is < 500 micrometers . The measured energy resolution is 14.2 percent at 35 MeV. The detection techniques employed can be applied to measurements in a variety of disciplines including solar and atmospheric physics, radiation therapy and nuclear materials monitoring. These applications are discussed briefly as are alternative detector configurations and future development plans.
Space Science Center, Physics
Digital Object Identifier (DOI)
James M. Ryan ; Wenhui Li ; John R. Macri ; Mark L. McConnell ; Carlos M. Castaneda and Juan L. Romero "Recent progress in the development of a solar neutron tracking device (SONTRAC)", Proc. SPIE 3768, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics, 496 (October 19, 1999); doi:10.1117/12.366621; http://dx.doi.org/10.1117/12.366621
© (1999) COPYRIGHT SPIE--The International Society for Optical Engineering.