PHYSICS AND MATHEMATICS

Imbalance of electron-beam energy in induction cyclic accelerator

V. A. Moskalev, G. I. Sergeev

National Research Tomsk Polytechnic University

Abstract: Under inductive cyclic acceleration of charged particles the beam current of which exceeds several hundred amperes, a large amount of energy is accumulated in its electromagnetic field. These results in energy imbalance, i.e. inconsistency between energy received by the electron beam from betatron’s eddy electric field and energy required for the electron beam to stably move along the equilibrium orbit. This is one of the reasons for beam instability and large loss of accelerated particle charge. Thus, the paper presents an estimation of the occurred imbalance degree and considers possibilities of eliminating its negative effect on the process of acceleration.

Keywords: induction cyclic accelerator, beam-currents of thousands amperes, circulating-beam instability, energy imbalance.