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Observation of High Transformer Ratio from Bunch Shaping Using Emittance Exchange

机译:利用发射光谱交换观察束形变形的高变压器比

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Argonne Wakefield Accelerator (AWA) group members recently demonstrated transformer ratio enhancement of R=4.8. In the experiment, a triangular drive bunch and a trailing main bunch are passed through a dielectric slab structure (quartz) to generate the wakefield and a subsequent longitudinal phase space measurement system is used to measure R. We generated the drive's triangular current profile with the AWA emittance exchange beamline which allows easy control of the current profile by simple transverse manipulation (e.g. mask). This direct measurement indicated R=4.8 which is the highest measured transformer ratio so far. We present the experimental details in this paper, discuss the status of the high transformer ratio in plasma wakefield acceleration and introduce our future plans.
机译:Argonne Wakefield加速器(AWA)小组成员最近展示了R = 4.8的变压器比率增强。在实验中,三角形驱动束和尾随主束穿过介电平板结构(石英)以产生尾流场,随后的纵向相空间测量系统用于测量R。 AWA发射交换光束线,可通过简单的横向操作(例如,遮罩)轻松控制电流曲线。该直接测量表明R = 4.8,这是迄今为止测得的最高变压器比率。我们在本文中介绍了实验细节,讨论了高变比在等离子流场加速中的地位,并介绍了我们的未来计划。

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