Full documentation of PPV vertex evaluation prior to production of 2008 pp data 

 We want to answer the following questions in this prioritize order.

1.  FMS triggered (forward) events:
   1.  how often  none of PPV vertices agrees with VPD vertex  and why (using 8 cm margin) 
   2. how often PPV vertex best matching VPD vertex is not listed as first  by PPV
2.  evaluate PPV performance for ~4 mid rapidity triggers in pp 2008
3. evaluate PPV for dAu or other beams

For now use the following BFC chain:

"DbV20080712 pp2008 ITTF OSpaceZ2 OGridLeak3D beamLine VFPPVnoCTB debug logger" 

Run 8 (200 GeV dAu and pp) , by Gene