Study of electron optics in an electron beam ion charge breeding source

Charge state of an ion can precisely be tuned in an Electron Bean Ion-charge Breeding Source (EBIBS) and further the highly pure beam of common or rare species can be extracted for various applications in medical, material, atomic, nuclear and other science and engineering. It has been envisaged that the ion source under study will be highly beneficial for the rare isotope project at our centre. An EBIBS essentially consists of a high perveance electron gun to generate electron beam up to >10A using proper design and a superconducting solenoid of ∼1.2m length and ∼5T axial magnetic field and a water cooled electron collector and ion extractor chamber. It is very important to study the electron beam optics throughout the source for smooth transmission and compatible design of subsystems. The gun will be using cathode, which will project axially high current beam under magnetic field. A large number of thin combined electric and magnetic lenses have been modelled to study the individual projected electrons as well as whole electron beam throughout the length with and without space charge effect. The electron optical details are presented. (author)