Fix Geant4 configuration

With the additional parameter specialCuts the energy based Geant3 cuts are automatically converted to the range based Geant4 cuts by VMC. Without the parameter the default Geant4 cuts are used. The change reduced the number of secondaries by a factor of 5 or more for a normal CbmRoot UrQMD simulation and speed up the runtime by factors. The runtime compared to Geant3 went from being slower by a factor of 4 to being slower by 30 %. The change of the maximum number of steps from 1e7 to the correct number of 10000 has no effect. There are no tracks exceeding 10000 steps such that there is no additional speedup.

sim/transport/steer/CbmGeant4Settings.h

@@ -25,7 +25,7 @@
 class TVirtualMC;
 
 class CbmGeant4Settings : public CbmVMCSettings {
-public:
+ public:
   CbmGeant4Settings()                         = default;
   ~CbmGeant4Settings()                        = default;
   CbmGeant4Settings(const CbmGeant4Settings&) = delete;
@@ -94,25 +94,25 @@ public:
    **/
   Int_t GetMaximumNumberOfSteps() { return fMaxNumSteps; }
 
-private:
-  std::array<std::string, 3> fG4RunConfig {{"geomRoot", "QGSP_BERT_EMV+optical", "stepLimiter+specialCuts"}};
+ private:
+  std::array<std::string, 3> fG4RunConfig{{"geomRoot", "QGSP_BERT_EMV+optical", "stepLimiter+specialCuts"}};
 
   /*
   See https://redmine.cbm.gsi.de/issues/2913
   As of Geant4-10.5 these commands were changed.
   Tested for Geant4-11
   */
-  std::vector<std::string> fG4Commands {"/process/optical/verbose 0",
-                                        "/process/optical/cerenkov/setMaxPhotons 20",
-                                        "/process/optical/cerenkov/setMaxBetaChange 0.1",
-                                        "/process/optical/cerenkov/setTrackSecondariesFirst true",
-                                        "/process/optical/processActivation Cerenkov true",
-                                        "/process/optical/processActivation OpAbsorption true",
-                                        "/process/optical/processActivation OpBoundary true"};
+  std::vector<std::string> fG4Commands{"/process/optical/verbose 0",
+                                       "/process/optical/cerenkov/setMaxPhotons 20",
+                                       "/process/optical/cerenkov/setMaxBetaChange 0.1",
+                                       "/process/optical/cerenkov/setTrackSecondariesFirst true",
+                                       "/process/optical/processActivation Cerenkov true",
+                                       "/process/optical/processActivation OpAbsorption true",
+                                       "/process/optical/processActivation OpBoundary true"};
 
-  Int_t fMaxNumSteps {10000};
+  Int_t fMaxNumSteps{10000};
 
-  Int_t fRandomSeed {0};
+  Int_t fRandomSeed{0};
 
   ClassDef(CbmGeant4Settings, 4);
 };