Abstract
This paper describes the design concept for a compact Paul trap experimental configuration that fully simulates the collective processes and nonlinear transverse dynamics of an intense charged particle beam that propagates over large distances through a periodic quadrupole magnetic field. To summarize, a long nonneutral plasma column ( L⪢ r p) is confined axially by applied DC voltages V ̂ = const. on end cylinders at z=± L, and transverse confinement is provided by segmented cylindrical electrodes (at radius r w) with applied oscillatory voltages ± V 0( t) over 90° segments. Because the transverse focusing force is similar in waveform to that produced by a discrete set of periodic quadrupole magnets in a frame moving with the beam, the Paul trap configuration offers the possibility of simulating intense beam propagation in a compact experimental facility. The nominal operating parameters in the experimental design are: barium ions ( A=137); plasma column length 2L=2 m ; wall radius r w =10 cm ; plasma radius r p =1 cm ; maximum wall voltage V ̂ 0=400 V ; end electrode voltage up to V ̂ =500 V ; and voltage oscillation frequency f 0=1/T=60 kHz .
Published Version
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