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This document summarizes a study on the design of a double gaps electromagnetic lens that produces distortion-free and rotation-free images. The lens consists of two identical double-cylindrical electromagnetic lenses with a 5mm air gap between each lens. Magnetic field simulations show that with a bore ratio of 14:10:10 and equal excitation but opposite direction of the two lenses, distortion can be eliminated at a focal length of 18.53mm. The radial and spiral distortion coefficients are zero at an excita

Author
erpublication
Language
EN