Creation of a Closed Field Line Compact Toroid System by Counterstreaming Rotating Relativistic Electron Beams

摘要

The formation of a Compact Toroid using two sequentially injected rotating relativistic electron beams is discussed conceptually and in practice. A single beam is used to create a plasma in an open ended field-reversed configuration. A second counter streaming beam is then used to neutralize the axial current left by the first, and therby form the closed configuration. Results of experiments that demonstrated the validity of this concept are presented. The propagation of the second beam was hindered by plasma external to the first beam channel. This plasma is inherent to the propagation of a rotating beam, and restricted the parameter range in which the compact toroid could be formed. (Author)