Phi is no longer consistent with the new geometry

[ftouchte]

I'm reviewing the AHDC reconstruction code.

As the AHDC geometry has changed, this definition of phi is no longer good.

https://github.com/JeffersonLab/coatjava/blob/6649f8adb312c5073bdc0259538f8f9d2b8319b4/reconstruction/alert/src/main/java/org/jlab/rec/ahdc/PreCluster/PreCluster.java#L41

[ftouchte]

Even the X and Y are no longer good.