G4ThreeVector(wX,wY,wZ+ChamberLength-m_TargetLength[i]-WindowThickness*2.-11*mm),// Z positioning putting TPC beginn and Target beginning w/ difference of 11mm
G4ThreeVector(wX,wY,wZ+ChamberLength-m_TargetLength[i]-WindowThickness*2.-5*mm),// Z positioning putting TPC beginn and Target beginning w/ difference of 5mm