摘要
介绍了北京正负电子对撞机重大改造工程(BEPCII)储存环的准直测量方法和数据平差处理方法,并对2006-2012年隔年储存环控制点的点位中误差进行了计算和分析,其绝对点位中误差在储存环的平面径向和切向的几何平均值均在0.10 mm以内,高程方向在0.25 mm以内,相对点位中误差在平面径向、切向和高程方向的几何平均值均在0.06 mm以内,可为其它加速器装置控制网的设计和测量提供参考。
Background： Alignment is carried out in BEPCII storage ring every year by using laser tracker, and planimetric adjustment and vertical adjustment are respectively conducted on the measurement data. Purpose： The aim is to figure out tile position error of control network in BEPCII storage ring. Methods： The mean square error of the survey points in BEPCII storage ring of every other year from 2006 to 2012 is calculated and analyzed by the method of alignment and data processing of the survey points, which is introduced in this paper. Results： The geometric mean of absolute mean square error is less than 0.10 mm in the radial and tangential direction, and less than 0.25 mm in the elevation direction, while the geometric mean of relative mean square error is less than 0.06 mm. Conclusion： The geometric mean of slope distance error, horizontal angle error and vertical angle error which calculated from the measurement data can be used as the prior error in data adjustment, and the actual position accuracy of the control network in BEPCII storage ring is higher than the design value, and it can be a reference for the control network design and measurement of other accelerator devices.
出处
《核技术》
CAS
CSCD
北大核心
2015年第1期1-6,共6页
Nuclear Techniques
关键词
BEPCII
储存环
控制网
平差
误差椭圆
误差
BEPCII, Storage ring, Control network, Adjustment, Error ellipse, Error
