The Landau damping mechanism stabilises the impedance driven head-tail modes in hadron synchrotrons. Due to the frequent coherent beam instabilities observed in the Large Hadron Collider in 2012, the Landau damping of the beams was doubted. Therefore, a transverse Beam Transfer Function (BTF) system was installed in order to probe the transverse Landau damping of the beams and compare the measurements with expectations. The results of the BTF measurements acquired during several experiments in the LHC are summurised including different machine configurations. The method developed for the data analysis is described and the comparison between the models and the measurements is also presented. ay be entered using the command.

中文翻译：

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光束传递函数测量用于探测LHC处的横向Landau阻尼

Landau阻尼机制可稳定强子同步加速器中阻抗驱动的头尾模式。由于在2012年大型强子对撞机中经常观察到相干光束不稳定，因此人们怀疑光束的Landau阻尼。因此，安装了横梁传递函数（BTF）系统，以探测横梁的横向Landau阻尼并将测量结果与预期值进行比较。总结了在大型强子对撞机的几次实验中获得的BTF测量结果，包括不同的机器配置。描述了为数据分析开发的方法，并介绍了模型与测量值之间的比较。可以使用命令输入。