Superconducting Lens and Its Focusing Effect

This paper analyses the mechanism responsible for focusing intense relativistic electron beams by the use of YBa2Cu3O7-d high-temperature superconductor lens. The transporting and focusing effects of the superconductor lens are confirmed in the experiments. The results show that the superconductor lens possesses obvious focusing effects, and makes the distribution of the electrons focused in the beam transverse-section evener.