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Examples of Applications

We have established a general method to calculate the helix parameter error matrix for a high momentum track, taking into account multiple scattering. In this limit, the error matrix is completely determined by the tracking device (its sampling points, coordinate errors, material thickness, ..., etc.). Once the error matrix is given at some pivot, it is straightforward to move the pivot to anywhere in the detector system and to transform the error matrix (propagation of error) accordingly.


Keisuke Fujii