[Halld-offline] vertex bug?

[Matthew Shepherd]

Hi all,

In working on the photon efficiency studies for the new PID design I noticed a bug (?) with the simulation.  I'm using the particle gun with the SCAP card setting the z vertex to 65.  However, the DMCThrown objects (viewed in hdview2) report a vertex of 80.  The reconstruction, with Paul's change, uses 65 for the vertex.  Does anyone else see this?

BTW (off topic, but related to our discussion yesterday), another good reason for using the center of target for default photon reconstruction is that it removes the dependency of basic photon reconstruction on tracking.  This is probably an order of magnitude or more speedup if one just wants to run photon reconstruction (without track-shower matching, of course).

Matt