Author/Authors :
Zylstra، نويسنده , , A.B. and Frenje، نويسنده , , J.A. and Séguin، نويسنده , , F.H. and Gatu Johnson، نويسنده , , M. and Casey، نويسنده , , D.T. and Rosenberg، نويسنده , , M.J. and Waugh، نويسنده , , C. and Sinenian، نويسنده , , N. and Manuel، نويسنده , , M.J.-E. and Li، نويسنده , , C.K. and Petrasso، نويسنده , , R.D. and Kim، نويسنده , , Y. and Herrmann، نويسنده , , H.W.، نويسنده ,
Abstract :
The solid-state nuclear track detector CR-39 is widely used as a detecting mechanism in physics experiments as well as for industrial purposes such as neutron dosimetry and radon detection. The upper limit of detectable charged-particle fluence on CR-39 is set by physical overlapping or ‘pulse pileup’ of particle tracks on the surface. In the low-overlap regime the overlapping fraction of tracks scales as χ ≡ η × ( π D ¯ 2 ) where η is the density of tracks and D ¯ is the average track diameter. We report on the development of a Monte Carlo simulation to predict the severity of track overlap for any fluence of an arbitrary diameter distribution of tracks. Furthermore, we present an algorithm to correct for particle-track overlap in a post hoc manner based on these Monte Carlo simulations, which can extend the upper fluence limit for a quasi-monoenergic source by a factor of 3–4 when counting accuracies ∼ 10 % are acceptable.
