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首页> 外文期刊>Physical Review. Accelerators and Beams >Real-time observation of dynamic floor motion of the KEKB injector linac with a laser-based alignment system
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Real-time observation of dynamic floor motion of the KEKB injector linac with a laser-based alignment system

机译：使用基于激光的对准系统实时观察KEKB喷油器直线加速器的动态底板运动

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A new remote-controllable sensing system for a laser-based alignment system is in development to measure slow dynamic displacements of the tunnel floor in real time at the KEKB injector linac. Although the injector linac had initially been aligned with a laser-based alignment system, we have found that, based on recent real-time observations, the transverse displacements of the tunnel floor to the laser axis caused by dynamic ground motion are not negligibly small compared with the required alignment tolerance, in terms of the straightness of the beam line. Based on spatial and temporal cross-correlation analyses performed using displacement vectors from data recorded during a nearly eight-month period, it was found that the tunnel floor moves coherently in space and time domains over the entire length of the linac on average over long periods of time, while the cross-correlation function varies irregularly and complexly over shorter periods of time. This report describes in detail the basic design, experimental results, and present status of the new remote-sensing system for real-time alignment observations at the KEKB injector linac.
机译：正在开发一种用于基于激光的对准系统的新型远程控制传感系统，以实时测量KEKB喷油器直线加速器上隧道底板的缓慢动态位移。尽管喷油器直线加速器最初已与基于激光的对准系统对准，但我们发现，基于最近的实时观察，与动态地震动引起的隧道底板相对于激光轴的横向位移相比，可忽略不计在光束线的直线度方面具有所需的对准公差。根据使用近八个月期间记录的数据的位移矢量进行的空间和时间互相关分析，发现隧道底板在整个直线加速器的整个长度上，在空间和时域内平均长期连续地运动时间互相关函数在较短的时间内不规则且复杂地变化。该报告详细描述了在KEKB喷油器直线加速器上进行实时对准观测的新型遥感系统的基本设计，实验结果和现状。

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