//by Shuya 180516. Now the latter ones are the right angle. The angles are seen from (0,0,1) vector, so you if you set 210 deg in your .Detector file (which is seen from (0,0,-1) axis), the angle is 330 deg in (0,0,1) axis.
//by Shuya 180516. In the following G4RotationMatrix (or Geant4 in general), the rotation phi is defined by (0,0,1) axis (not (0,0,-1) axis which is seeing from beam downstream to upstream). I.e., if you place a detector at 210 deg in your .Detector file, the x-y position of the detector must be (>0,<0). Remember, however, the 210 degree you set is the angle from (0,0,-1) axis in your analysis (<0,<0). I.e., if you want to set these detectors at the same angle, you have to conver one to the other angle.