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Re: Dirc+TOF [message #7182 is a reply to message #7180] Wed, 06 August 2008 14:42 Go to previous messageGo to previous message
asanchez is currently offline  asanchez
Messages: 350
Registered: March 2006
first-grade participant
From: *gsi.de
hi again,
i thought the z0, was the z coordinante at (x0,y0)

where x0,y0 are the coordinates of the center of the circle described by the particle in its movement.

So my point was, that primaries are statrting at 0,0,0, where the extrapolation to tof radius to determine the phi is correct.
But if the particle is not starting at 0,0,0 the extrapolation to tof radius is not valid anymore at least you take also into a count the Phi value for the first hit in the track.

What do you think?

Alicia.
 
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