ZEUS探测器快速精确航迹拟合的数学框架
Mathematical Framework for Fast and Rigorous Track Fit for the ZEUS Detector
摘要：
在这份说明中，我们提出了一个数学框架，一个严格的方法，一个共同的轨道适合位于ZEUS探测器的内部区域的跟踪器。该方法利用卡尔曼滤波器，并提供了一个严格的处理磁场的不均匀性，多次散射和能量损失。我们描述的卡尔曼滤波器技术的实施与减少计算量的圆柱形漂移室，桶和向前硅条探测器和向前稻草漂移室的数学细节。讨论了具有齐次场和非齐次场的期权。在标准PC上，一个ZEUS事件中的轨道拟合大约需要20毫秒。
英文摘要：
In this note we present a mathematical framework for a rigorous approach to a common track fit for trackers located in the inner region of the ZEUS detector. The approach makes use of the Kalman filter and offers a rigorous treatment of magnetic field inhomogeneity, multiple scattering and energy loss. We describe mathematical details of the implementation of the Kalman filter technique with a reduced amount of computations for a cylindrical drift chamber, barrel and forward silicon strip detectors and a forward straw drift chamber. Options with homogeneous and inhomogeneous field are discussed. The fitting of tracks in one ZEUS event takes about of 20ms on standard PC.
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