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Hi,

I am wondering if I can get track states at target, 1st layer and 2nd 
layer of SVT.
Not sure what is the best way of doing this.

I tried to use getTrackState( int ) method, but it only worked for 
arguments 1, 3 and 4
I know 4 represent track state at ECal face, while I am confused about 1 
and 3

Both 1 and 3 have reference point at (0., 0., 0.), but have different 
parameters d0, tanLambda etc (Omega was quite close)

I am not sure I understand how this happens, since by definition d0 is 
the signed distance between reference point and the point
of the closest approach.

Rafo

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