arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2012.10680physics.acc-ph
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线性有源等离子体透镜中的Multi-kT/m聚焦梯度

Multi-kT/m Focusing Gradient in a Linear Active Plasma Lens

K. N. Sjobak, E. Adli, R. Corsini, W. Farabolini, G. Boyle, C. A. Lindstrøm, M. Meisel, J. Osterhoff, J. -H. Röckemann, L. Schaper, A. E. Dyson

摘要:

有源等离子体透镜是一种紧凑的装置,作为带电粒子束的一种有前途的束聚焦替代方案而开发,能够为高能束提供短焦距。我们以前已经证明,在保持束流发射度的充氩等离子体透镜中可以实现梯度约为0.3 kT/m的线性磁场[C.A. Lindstrøm等人,物理修订信函121,194801(2018)]。在这里,我们表明,氩气在一个500 μm直径的毛细管,场仍然是线性的聚焦梯度为3.6 kT/m,这是一个数量级高于四极磁铁的梯度。产生磁场的电流脉冲由紧凑的Marx组提供,并且是高度可重复的。这些结果建立了主动等离子体透镜作为脉冲粒子束应用的理想设备,需要非常高的聚焦梯度,在整个透镜孔径是均匀的。

英文摘要:

Active plasma lenses are compact devices developed as a promising beam-focusing alternative for charged particle beams, capable of short focal lengths for high-energy beams. We have previously shown that linear magnetic fields with gradients of around 0.3 kT/m can be achieved in argon-filled plasma lenses that preserve beam emittance [C.A. Lindstrøm et al., Phys. Rev. Lett. 121, 194801 (2018)]. Here we show that with argon in a 500 μm diameter capillary, the fields are still linear with a focusing gradient of 3.6 kT/m, which is an order of magnitude higher than the gradients of quadrupole magnets. The current pulses that generate the magnetic field are provided by compact Marx banks, and are highly repeatable. These results establish active plasma lenses as an ideal device for pulsed particle beam applications requiring very high focusing gradients that are uniform throughout the lens aperture.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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