  We study the spectrum of cosmic ray positrons produced by a scaling
distribution of non-superconducting cosmic strings. In this scenario, the
positrons are produced from the jets which form from the cosmic string cusp
annihilation process. The spectral shape is a robust feature of our scenario,
and is in good agreement with the results from the recent PAMELA and ATIC
experiments. In particular, the model predicts a sharp upper cutoff in the
spectrum, and a flux which rises as the upper cutoff is approached. The energy
at which the flux peaks is determined by the initial jet energy. The amplitude
of the flux can be adjusted by changing the cosmic string tension and also
depends on the cusp annihilation efficiency.
