Calculation of a dipole magnet for the velocity filter ship and computer simulation of fusion experiments

Abstract

Abstract At the velocity filter SHIP most of the observed evaporation residues are identified, at present, by alpha spectroscopic methods. The possibility of a mass separation of unretarded fusion products via a deflection magnet coupled to SHIP in such a way that focusing in angle and velocity is achieved for a certain mass over charge ratio, is discussed. The calculations were carried out with the ion-optical computer program GIOS. In combination with a Monte Carlo program to calculate the characteristics of the evaporation residues after leaving the target, it is possible to create realistic particle spectra in the focal plane of the separator. The improvement of mass resolution by measuring the time-of-flight and the magnetic beam rigidity of the reaction products is also discussed. A computer program which simulates ion trajectories through gas-filled systems allows the study of mass resolution of a gas-filled dipole after SHIP.