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arXiv 1209.2441physics.acc-ph
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费米实验室电子冷却器束流产生系统的低能运行

Low-Energy Run of Fermilab Electron Cooler's Beam Generation System

L. R. Prost, A. Shemyakin, A. Fedotov, J. Kewisch

摘要:

在BNL拟议的低能RHIC运行中可能使用费米实验室电子冷却器的评估背景下,在短束线配置中测试了在1.6 MeV电子束能量下操作冷却器。本可行性研究的主要结论是,冷却器的光束产生系统是适合BNL的需要。束流再循环是稳定的所有测试参数。具体地说,在阴极磁场达到目前可获得的最大值250 G的情况下,获得了0.38 A的射束电流。能量波纹被测量为40 eV。与运行4.3 MeV束流(FNAL运行的标称值)的一个显著差异是,没有观察到无端的束流再循环中断。

英文摘要:

In the context of the evaluation of possibly using the Fermilab Electron Cooler for the proposed low-energy RHIC run at BNL, operating the cooler at 1.6 MeV electron beam energy was tested in a short beam line configuration. The main conclusion of this feasibility study is that the cooler's beam generation system is suitable for BNL needs. The beam recirculation was stable for all tested parameters. In particular, a beam current of 0.38 A was achieved with the cathode magnetic field up to the maximum value presently available of 250 G. The energy ripple was measured to be 40 eV. A striking difference with running the 4.3 MeV beam (nominal for operation at FNAL) is that no unprovoked beam recirculation interruptions were observed.

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