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Title: Transportation of high-current ion and electron beams in the accelerator drift gap in the presence of an additional electron background

The dynamics of a high-current ion beam propagating in the drift gap of a linear induction accelerator with collective focusing is studied using 3D numerical simulations in the framework of the full system of the Vlasov–Maxwell equations (code KARAT). The ion beam is neutralized by a comoving electron beam in the current density and, partially, in space charge, since the velocities of electrons and ions differ substantially. The dynamics of the high-current ion beam is investigated for different versions of additional neutralization of its space charge. It is established that, for a given configuration of the magnetic field and in the presence of a specially programmed injection of additional electrons from the boundary opposite to the ion injection boundary, the angular divergence of the ion beam almost vanishes, whereas the current of the ion beam at the exit from the accelerator drift gap changes insignificantly and the beam remains almost monoenergetic.
Authors:
; ;  [1] ;  [2] ;  [1]
  1. National Academy of Sciences of Ukraine, National Science Center Kharkiv Institute of Physics and Technology (Ukraine)
  2. Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)
Publication Date:
OSTI Identifier:
22472011
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 41; Journal Issue: 12; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATORS; BEAM CURRENTS; COMPUTERIZED SIMULATION; CURRENT DENSITY; ELECTRON BEAMS; ELECTRONS; FOCUSING; INDUCTION; INJECTION; ION BEAMS; K CODES; MAGNETIC FIELD CONFIGURATIONS; MAGNETIC FIELDS; MAXWELL EQUATIONS; SPACE CHARGE; VELOCITY