Fig. 1 shows the overall flow of the tracker.
is the common blocks which should be pre-filled by hit
finder(See [1]) and passed to the SciFi tracker(SFTR).
In the 1st step, tracker rearranges the hits(
s) in the
order of Z-position. And fragment finding, track finding,
vertex finding, and finally 2ndary track finding near vertex.
The details for each step are described in the following sections.