First accelerator test of vacuum components with laser-engineered surfaces for electron-cloud mitigation
First accelerator test of vacuum components with laser-engineered surfaces for electron-cloud mitigation
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DOI：
10.1103/physrevaccelbeams.20.113201
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发表时间：
2017-11-20
影响因子：
1.7
通讯作者：
Abdolvand, Amin
中科院分区：
文献类型：
--
作者：
Calatroni, Sergio;Valdivieso, Elisa Garcia-Tabares;Abdolvand, Amin
电子云减缓是高强度质子环形加速器的基本要求。在其他解决方案中，激光工程表面结构（LESS）具有潜在的非常低的二次电子产率（SEY）和允许简单的可扩展性以用于大规模生产的优点。在2016年运行期间，已经制造了两个带有LESS的铜衬里，并通过监测CERN SPS加速器中偶极磁体中的电子云电流成功进行了测试。在本文中，我们报告这些结果，以及详细的实验进行的样品，如SEY和地形研究，从而导致了优化的治疗，鉴于SPS测试和未来可能使用的HL-LHC。
Electron cloud mitigation is an essential requirement for high-intensity proton circular accelerators. Among other solutions, laser engineered surface structures (LESS) present the advantages of having potentially a very low secondary electron yield (SEY) and allowing simple scalability for mass production. Two copper liners with LESS have been manufactured and successfully tested by monitoring the electron cloud current in a dipole magnet in the SPS accelerator at CERN during the 2016 run. In this paper we report on these results as well as the detailed experiments carried out on samples-such as the SEYand topography studies-which led to an optimized treatment in view of the SPS test and future possible use in the HL-LHC.