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武威医用重离子加速器是目前世界上最紧凑的重离子加速器治癌装置,同步环周长小至56.1 m,其中很多关键元件的安装定位精度要求达到亚毫米量级,四极透镜的定位精度要求0.1 mm。结合激光跟踪仪的特点和测量学知识通过三维控制网及多重坐标系的转换,探索了一种在元件自身坐标系下调节准直的方法,提高了准直安装的工作效率,使得最后所有的元件安装各向误差均控制在0.1 mm以内,其结果优于该装置的精度要求,使得同步环在短时间内顺利调束成功,从而验证了同步环准直测量的可靠性与准确性。
Wuwei medical heavy ion accelerator is the most compact heavy ion accelerator cancer device in the world, and the circumference of the synchronization ring is as small as 56.1 m. Many of the key components are required to reach the sub-millimeter accuracy of the positioning accuracy. The positioning accuracy of the quadrupole lens 0.1 mm. Combined with the characteristics of laser tracker and measurement knowledge, through the conversion of three-dimensional control network and multi-coordinate system, a method of adjusting collimation in the element’s own coordinate system was explored, and the work efficiency of collimation installation was improved so that all the last The error of component mounting is controlled within 0.1 mm, the result is better than the accuracy requirement of the device, which makes the synchronization loop successful in a short time, thus verifying the reliability and accuracy of the synchronization loop alignment.