Measurements and 3D Monte Carlo simulation of MeV ion transmission through conical glass capillaries

To investigate possible beam guiding and current density enhancement properties for conical glass capillaries for MeV ions, transmission measurements with well collimated ion beams of 1 MeV He+ and 71 MeV Xe19+ were done. No guiding effect was observed and only decent enhancement factors ε between 1 and 2 were measured and attributed to scattered particles. A 3D Monte Carlo simulation which is based on SRIM code was developed. The simulation reproduces the experimental results very well. This shows that the transmission properties of capillaries for MeV ion beams are governed by simple elastic scattering of the ions in the glass of the capillary.