论文标题
使用400 GEV/C质子生成超密集的对梁
Generating ultra-dense pair beams using 400 GeV/c protons
论文作者
论文摘要
提出了一种先前未开发的实验方案，用于产生低差异，超密度，相对论，电子峰值束，使用400 GEV/C质子在Hiradmat和Cern等设施上可用。 Preliminary Monte-Carlo and Particle-in-cell simulations demonstrate the possibility of generating beams containing $10^{13}-10^{14}$ electron-positron pairs at sufficiently high densities to drive collisionless beam-plasma instabilities, which are expected to play an important role in magnetic field generation and the related radiation signatures of relativistic astrophysical phenomena.两对梁是准中性的，大小在所有维度上都超过了几个皮肤深度，这首先允许检查横向和纵向不稳定性模式之间竞争对磁场生长的影响。此外，提出的方案允许控制光束中的电子旋律对的黑德子的相对密度，从而可以探索不同天体物理环境的参数空间。
A previously unexplored experimental scheme is presented for generating low-divergence, ultra-dense, relativistic, electron-positron beams using 400 GeV/c protons available at facilities such as HiRadMat and AWAKE at CERN. Preliminary Monte-Carlo and Particle-in-cell simulations demonstrate the possibility of generating beams containing $10^{13}-10^{14}$ electron-positron pairs at sufficiently high densities to drive collisionless beam-plasma instabilities, which are expected to play an important role in magnetic field generation and the related radiation signatures of relativistic astrophysical phenomena. The pair beams are quasi-neutral, with size exceeding several skin-depths in all dimensions, allowing for the first time the examination of the effect of competition between transverse and longitudinal instability modes on the growth of magnetic fields. Furthermore, the presented scheme allows for the possibility of controlling the relative density of hadrons to electron-positron pairs in the beam, making it possible to explore the parameter spaces for different astrophysical environments.
