Helicon wave physics for the development of a helicon plasma cell for particle-driven wakefield accelerators

用于开发用于粒子驱动尾场加速器的螺旋等离子体单元的螺旋波物理学

• 批准号: 517709182
• 负责人: Dr. Alf Köhn-Seemann
• 金额: --
• 依托单位: Institut für Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/517709182?language=en
• 关键词: Helicon; wave; physics; development; helicon

Linear particle accelerators accelerate particles by gradients in the electric field. Plasma wakefield accelerators provide gradients several orders of magnitude higher than conventional linear particle accelerators significantly reducing the required size, thereby promising affordable and compact accelerators for various applications. The high electric fields require high plasma density. Helicon discharges are known to provide the highest densities in linear geometry. The prototype experiment PROMETHEUS-A developed in Greifswald has demonstrated the required high density. The physics of helicon discharges at this particular high density is different from those in conventional helicon discharges. Based on code developments in Stuttgart, we will develop a code to understand the wave propagation and dissipation, the interplay with the gradients and the impact of the plasma boundaries. First, the code will be developed with the help of comparisons with experiments at conventional plasma densities (the VINETA device in Greifswald), later to experiments at high densities (PROMETHEUS-A now at CERN). Finally, the code can be used to optimize helicon discharges towards particle-driven wakefield density requirements.

线性粒子加速器通过电场中的梯度加速粒子。等离子尾流场加速器提供的梯度比传统的线性粒子加速器高几个数量级，大大减少了所需的尺寸，从而有望为各种应用提供经济实惠的紧凑加速器。高电场要求高等离子体密度。众所周知，螺旋放电在线性几何中提供了最高的密度。在Greifswald开发的PROMETHEUS-A原型实验已经证明了所需的高密度。在这种特殊的高密度下，螺旋放电的物理性质与传统的螺旋放电不同。基于斯图加特的代码开发，我们将开发一个代码来理解波的传播和耗散，与梯度的相互作用以及等离子体边界的影响。首先，该代码将在与传统等离子体密度实验（Greifswald的VINETA装置）的比较的帮助下开发，然后与高密度实验（欧洲核子研究中心的PROMETHEUS-A）进行比较。最后，代码可用于优化螺旋放电粒子驱动尾流场密度要求。