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Experimental Demonstration of Hadron Beam Cooling Using Radio-Frequency Accelerated Electron Bunches

机译:使用射频加速电子束冷却强子束冷却的实验演示

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Cooling of beams of gold ions using electron bunches accelerated with radio-frequency systems was recently experimentally demonstrated in the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. Such an approach is new and opens the possibility of using this technique at higher energies than possible with electrostatic acceleration of electron beams. The challenges of this approach include generation of electron beams suitable for cooling, delivery of electron bunches of the required quality to the cooling sections without degradation of beam angular divergence and energy spread, achieving the required small angles between electron and ion trajectories in the cooling sections, precise velocity matching between the two beams, high-current operation of the electron accelerator, as well as several physics effects related to bunched-beam cooling. Here we report on the first demonstration of cooling hadron beams using this new approach.
机译:最近在布鲁克海文国家实验室的相对论重离子对撞机上,实验证明了使用射频系统加速的电子束冷却金离子束。这种方法是新的,并且开辟了以比电子束的静电加速更大的能量使用该技术的可能性。这种方法的挑战包括产生适合冷却的电子束,将所需质量的电子束传递到冷却部分,而不会降低束角发散和能量散布,在冷却部分中实现电子和离子轨迹之间所需的小角度,两束光之间的精确速度匹配,电子加速器的大电流运行以及与束流冷却相关的几种物理效应。在这里,我们报告使用这种新方法冷却强子束的首次演示。

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