stand-alone executable for cross-section readout

Processes/UrQMD/CMakeLists.txt

@@ -88,3 +88,9 @@ target_link_libraries (
   ProcessUrQMD
   CORSIKAtesting
   )
+
+add_executable(urqmd_xs urqmd_xs.cc)
+target_link_libraries(urqmd_xs
+	ProcessUrQMD
+	CORSIKAparticles
+)

Processes/UrQMD/urqmd_xs.cc

+/*
+ * (c) Copyright 2020 CORSIKA Project, corsika-project@lists.kit.edu
+ *
+ * See file AUTHORS for a list of contributors.
+ *
+ * This software is distributed under the terms of the GNU General Public
+ * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
+ * the license.
+ */
+
+#include <corsika/process/urqmd/UrQMD.h>
+#include <corsika/random/RNGManager.h>
+#include <corsika/units/PhysicalUnits.h>
+
+#include <cstdlib>
+#include <iostream>
+
+using namespace corsika;
+using namespace corsika::units::si;
+
+int main() {
+  random::RNGManager::GetInstance().RegisterRandomStream("UrQMD");
+  corsika::process::UrQMD::UrQMD urqmd;
+
+  for (auto Elab = 100_MeV; Elab <= 10_TeV; Elab *= 1.02) {
+    std::cout << Elab / 1_GeV << '\t'
+              << urqmd.GetCrossSection(particles::Code::Proton, particles::Code::Proton,
+                                       Elab) /
+                     1_mb
+              << std::endl;
+  }
+
+  return EXIT_SUCCESS;
+}