Fix mvd qa macros

Correct target position. The macros were not adjusted for the shift of the
coordinate system. The origin is now in the middle of the magnet and not any
longer in the target. A shift of the target by -44 cm is needed.

macro/mvd/qa/mvd_qa1_transUrqmd.C

@@ -83,7 +83,7 @@ void mvd_qa1_transUrqmd(const char* setup = "sis100_electron")
   Double_t targetDiameter  = 2.5;    // diameter in cm
   Double_t targetPosX      = 0.;     // target x position in global c.s. [cm]
   Double_t targetPosY      = 0.;     // target y position in global c.s. [cm]
-  Double_t targetPosZ      = 0.;     // target z position in global c.s. [cm]
+  Double_t targetPosZ      = -44.;   // target z position in global c.s. [cm]
   Double_t targetRotY      = 0.;     // target rotation angle around the y axis [deg]
   // ------------------------------------------------------------------------
 

macro/mvd/qa/mvd_qa2_transDelta.C

@@ -84,7 +84,7 @@ void mvd_qa2_transDelta(const char* setup = "sis100_electron")
   Double_t targetDiameter  = 2.5;    // diameter in cm
   Double_t targetPosX      = 0.;     // target x position in global c.s. [cm]
   Double_t targetPosY      = 0.;     // target y position in global c.s. [cm]
-  Double_t targetPosZ      = 0.;     // target z position in global c.s. [cm]
+  Double_t targetPosZ      = -44.;   // target z position in global c.s. [cm]
   Double_t targetRotY      = 0.;     // target rotation angle around the y axis [deg]
   // ------------------------------------------------------------------------
 
@@ -146,7 +146,7 @@ void mvd_qa2_transDelta(const char* setup = "sis100_electron")
 
   // -----   Create PrimaryGenerator   --------------------------------------
   FairPrimaryGenerator* primGen = new FairPrimaryGenerator();
-  FairIonGenerator* fIongen     = new FairIonGenerator(79, 197, 79, 1, 0., 0., 25, 0., 0., -1.);
+  FairIonGenerator* fIongen     = new FairIonGenerator(79, 197, 79, 1, 0., 0., 25, 0., 0., (targetPosZ - 1.));
   primGen->AddGenerator(fIongen);
 
   fRun->SetGenerator(primGen);