Experimental study on evolution of a beam halo by an ion plasma

被困在线性保罗阱中的离子等离子体的集体运动相当于带电粒子束通过线性输运线传播的集体运动。也就是说，利用离子等离子体可以研究空间电荷主导束流的动力学。在广岛大学，一个线性保罗陷阱系统“S-POD（粒子轨道动力学模拟器）”被开发出来，用于研究光束中的各种集体效应。本课题的目的是对离子等离子体在线性保罗阱中束流晕的演化进行实验研究。观察到离子等离子体可以产生具有诱导共振不稳定性的大光晕。

The collective motion of an ion plasma trapped in a linear Paul trap is equivalent with that of a charged-particle beam propagating through a linear transport line. Namely, the dynamics of the space-charge-dominated beam can be studied by using the ion plasma. At Hiroshima University, a linear Paul trap system "S-POD (Simulator for Particle Orbit Dynamics)" was developed to investigate various collective effects in beams. A purpose of this theme is experimental study on evolution of a beam halo by an ion plasma confined in a linear Paul trap. It was observed that an ion plasma could produce a large halo with induced resonance instability.