Simulations of a High‐Transformer‐Ratio Plasma Wakefield Accelerator Using Multiple Electron Bunches
Simulations of a High‐Transformer‐Ratio Plasma Wakefield Accelerator Using Multiple Electron Bunches
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使用多电子束的高变压器比等离子体尾场加速器的模拟
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
J. Park
中科院分区：
文献类型：
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作者：
E. Kallos;P. Muggli;T. Katsouleas;V. Yakimenko;J. Park
提出了线性状态下等离子体尾流场加速器的粒子-细胞模拟，该模拟由四束电子组成，这些电子被送入高密度等离子体。结果表明，在43 cm的等离子体中，如果每束电荷线性增加，束束间距为1.5个等离子体波长，并调整束束发射率以补偿非线性聚焦力，则可以保持较高的变压器比。产生的尾流场由一个测试见证束采样，其在等离子体后的能量增益是驱动束能量损失的六倍。
Particle‐in‐cell simulations of a plasma wakefield accelerator in the linear regime are presented, consisting of four electron bunches that are fed into a high‐density plasma. It is found that a high transformer ratio can be maintained over 43 cm of plasma if the charge in each bunch is increased linearly, the bunches are placed 1.5 plasma wavelengths apart and the bunch emmitances are adjusted to compensate for the nonlinear focusing forces. The generated wakefield is sampled by a test witness bunch whose energy gain after the plasma is six times the energy loss of the drive bunches.