Synthesis of Symmetrical Double Pole piece Magnetic Lens By Means of a ConventionalParameters Function

An objective function of a conventional independent parameters have been used throughout this work to synthesized double polepiece magnetic. These optimization parameters are respectively the air gap, bore radius and the two field tails potentials. The influence of each of these parameters is investigated concerning the field parameters, objective focal properties and the reconstructed polepieces. Results have shown that the increasing of the optimization parameters number will provide designer and researcher by a high degree of freedom to handling lens design. Furthermore, it is found that and objective lens of a good quality may obtained as the field is restricted to be in small axial interval with a high refractive power