diff --git a/Processes/Sibyll/CMakeLists.txt b/Processes/Sibyll/CMakeLists.txt
index 9fe9c0093cfd4f2151a54c7a3ebcf99ec4230ba8..6b304129abbac66f4a62c67f7f015c1d0c3f7c35 100644
--- a/Processes/Sibyll/CMakeLists.txt
+++ b/Processes/Sibyll/CMakeLists.txt
@@ -57,8 +57,8 @@ add_custom_command (
   COMMAND ${CMAKE_COMMAND} -E create_symlink ${PROJECT_BINARY_DIR}/include/corsika/process/sibyll/Generated.inc ${CMAKE_CURRENT_SOURCE_DIR}/Generated.inc
   COMMENT "Generate link in source-dir: ${CMAKE_CURRENT_SOURCE_DIR}/Generated.inc"
   )
-add_custom_target (SourceDirLink2 DEPENDS ${PROJECT_BINARY_DIR}/Processes/Sibyll/Generated.inc)
-add_dependencies (ProcessSibyll SourceDirLink2)
+add_custom_target (SourceDirLinkSib DEPENDS ${PROJECT_BINARY_DIR}/Processes/Sibyll/Generated.inc)
+add_dependencies (ProcessSibyll SourceDirLinkSib)
 # .....................................................
 
 
diff --git a/Processes/Sibyll/Interaction.cc b/Processes/Sibyll/Interaction.cc
index def7ca1cc996c2629613d8bef2f76efe234ee6f2..553792e8f945ed6fb414c55f0d898650012da9cf 100644
--- a/Processes/Sibyll/Interaction.cc
+++ b/Processes/Sibyll/Interaction.cc
@@ -37,7 +37,7 @@ namespace corsika::process::sibyll {
   Interaction::Interaction() {}
 
   Interaction::~Interaction() {
-    cout << "Sibyll::Interaction n=" << fCount << " Nnuc=" << fNucCount << endl;
+    cout << "Sibyll::Interaction n=" << count_ << " Nnuc=" << nucCount_ << endl;
   }
 
   void Interaction::Init() {
@@ -45,9 +45,9 @@ namespace corsika::process::sibyll {
     using random::RNGManager;
 
     // initialize Sibyll
-    if (!fInitialized) {
+    if (!initialized_) {
       sibyll_ini_();
-      fInitialized = true;
+      initialized_ = true;
     }
   }
 
@@ -94,7 +94,7 @@ namespace corsika::process::sibyll {
     const double dEcm = CoMenergy / 1_GeV;
     if (particles::IsNucleus(TargetId)) {
       const int iTarget = particles::GetNucleusA(TargetId);
-      if (iTarget > fMaxTargetMassNumber || iTarget == 0)
+      if (iTarget > maxTargetMassNumber_ || iTarget == 0)
         throw std::runtime_error(
             "Sibyll target outside range. Only nuclei with A<18 are allowed.");
       sib_sigma_hnuc_(iBeam, iTarget, dEcm, sigProd, dummy, sigEla);
@@ -281,7 +281,7 @@ namespace corsika::process::sibyll {
       }
 
       const auto targetCode =
-          mediumComposition.SampleTarget(cross_section_of_components, fRNG);
+          mediumComposition.SampleTarget(cross_section_of_components, RNG_);
       cout << "Interaction: target selected: " << targetCode << endl;
       /*
         FOR NOW: allow nuclei with A<18 or protons only.
@@ -292,7 +292,7 @@ namespace corsika::process::sibyll {
       if (IsNucleus(targetCode)) targetSibCode = GetNucleusA(targetCode);
       if (targetCode == particles::Proton::GetCode()) targetSibCode = 1;
       cout << "Interaction: sibyll code: " << targetSibCode << endl;
-      if (targetSibCode > fMaxTargetMassNumber || targetSibCode < 1)
+      if (targetSibCode > maxTargetMassNumber_ || targetSibCode < 1)
         throw std::runtime_error(
             "Sibyll target outside range. Only nuclei with A<18 or protons are "
             "allowed.");
@@ -312,17 +312,17 @@ namespace corsika::process::sibyll {
              << "THIS IS AN ERROR" << endl;
         throw std::runtime_error("energy too low for SIBYLL");
       } else {
-        fCount++;
+        count_++;
         // Sibyll does not know about units..
         const double sqs = Ecm / 1_GeV;
         // running sibyll, filling stack
         sibyll_(kBeam, targetSibCode, sqs);
-        if (fInternalDecays) {
+        if (internalDecays_) {
           // particles that decay internally will never appear on the corsika stack
           // switch on all decays except for the particles we want to take part in the
           // tracking
           SetAllUnstable();
-          SetStable(fTrackedParticles);
+          SetStable(trackedParticles_);
           decsib_();
           // reset
           SetAllStable();
@@ -330,7 +330,7 @@ namespace corsika::process::sibyll {
         // print final state
         int print_unit = 6;
         sib_list_(print_unit);
-        fNucCount += get_nwounded() - 1;
+        nucCount_ += get_nwounded() - 1;
 
         // add particles from sibyll to stack
         // link to sibyll stack
diff --git a/Processes/Sibyll/Interaction.h b/Processes/Sibyll/Interaction.h
index a1b385474703ae7ef877ee375bc4315c6b8625bb..62302d09190c1044c65ccf52289de0915645dc9c 100644
--- a/Processes/Sibyll/Interaction.h
+++ b/Processes/Sibyll/Interaction.h
@@ -21,9 +21,9 @@ namespace corsika::process::sibyll {
 
   class Interaction : public corsika::process::InteractionProcess<Interaction> {
 
-    int fCount = 0;
-    int fNucCount = 0;
-    bool fInitialized = false;
+    int count_ = 0;
+    int nucCount_ = 0;
+    bool initialized_ = false;
 
   public:
     Interaction();
@@ -39,15 +39,15 @@ namespace corsika::process::sibyll {
     void SetAllUnstable();
     void SetAllStable();
 
-    bool WasInitialized() { return fInitialized; }
+    bool WasInitialized() { return initialized_; }
     bool IsValidCoMEnergy(corsika::units::si::HEPEnergyType ecm) const {
-      return (fMinEnergyCoM <= ecm) && (ecm <= fMaxEnergyCoM);
+      return (minEnergyCoM_ <= ecm) && (ecm <= maxEnergyCoM_);
     }
-    int GetMaxTargetMassNumber() const { return fMaxTargetMassNumber; }
-    corsika::units::si::HEPEnergyType GetMinEnergyCoM() const { return fMinEnergyCoM; }
-    corsika::units::si::HEPEnergyType GetMaxEnergyCoM() const { return fMaxEnergyCoM; }
+    int GetMaxTargetMassNumber() const { return maxTargetMassNumber_; }
+    corsika::units::si::HEPEnergyType GetMinEnergyCoM() const { return minEnergyCoM_; }
+    corsika::units::si::HEPEnergyType GetMaxEnergyCoM() const { return maxEnergyCoM_; }
     bool IsValidTarget(corsika::particles::Code TargetId) const {
-      return (corsika::particles::GetNucleusA(TargetId) < fMaxTargetMassNumber) &&
+      return (corsika::particles::GetNucleusA(TargetId) < maxTargetMassNumber_) &&
              corsika::particles::IsNucleus(TargetId);
     }
 
@@ -67,10 +67,10 @@ namespace corsika::process::sibyll {
     corsika::process::EProcessReturn DoInteraction(TProjectile&);
 
   private:
-    corsika::random::RNG& fRNG =
+    corsika::random::RNG& RNG_ =
         corsika::random::RNGManager::GetInstance().GetRandomStream("s_rndm");
     // FOR NOW keep trackedParticles private, could be configurable
-    std::vector<particles::Code> const fTrackedParticles = {
+    std::vector<particles::Code> const trackedParticles_ = {
         particles::Code::PiPlus,     particles::Code::PiMinus,
         particles::Code::Pi0,        particles::Code::KMinus,
         particles::Code::KPlus,      particles::Code::K0Long,
@@ -82,12 +82,12 @@ namespace corsika::process::sibyll {
         particles::Code::DMinus,     particles::Code::D0,
         particles::Code::MuMinus,    particles::Code::MuPlus,
         particles::Code::D0Bar};
-    const bool fInternalDecays = true;
-    const corsika::units::si::HEPEnergyType fMinEnergyCoM =
+    const bool internalDecays_ = true;
+    const corsika::units::si::HEPEnergyType minEnergyCoM_ =
         10. * 1e9 * corsika::units::si::electronvolt;
-    const corsika::units::si::HEPEnergyType fMaxEnergyCoM =
+    const corsika::units::si::HEPEnergyType maxEnergyCoM_ =
         1.e6 * 1e9 * corsika::units::si::electronvolt;
-    const int fMaxTargetMassNumber = 18;
+    const int maxTargetMassNumber_ = 18;
   };
 
 } // namespace corsika::process::sibyll
diff --git a/Processes/Sibyll/NuclearInteraction.cc b/Processes/Sibyll/NuclearInteraction.cc
index 384330c636a45a3dbeed8fc11ba2193e9dd1fd31..a79fd80c2a5bc751bf247b4a01cc725986f9501f 100644
--- a/Processes/Sibyll/NuclearInteraction.cc
+++ b/Processes/Sibyll/NuclearInteraction.cc
@@ -39,19 +39,19 @@ namespace corsika::process::sibyll {
   template <>
   NuclearInteraction<SetupEnvironment>::NuclearInteraction(
       process::sibyll::Interaction& hadint, SetupEnvironment const& env)
-      : fEnvironment(env)
-      , fHadronicInteraction(hadint) {}
+      : environment_(env)
+      , hadronicInteraction_(hadint) {}
 
   template <>
   NuclearInteraction<SetupEnvironment>::~NuclearInteraction() {
-    cout << "Nuclib::NuclearInteraction n=" << fCount << " Nnuc=" << fNucCount << endl;
+    cout << "Nuclib::NuclearInteraction n=" << count_ << " Nnuc=" << nucCount_ << endl;
   }
 
   template <>
   void NuclearInteraction<SetupEnvironment>::PrintCrossSectionTable(
       corsika::particles::Code pCode) {
     using namespace corsika::particles;
-    const int k = fTargetComponentsIndex.at(pCode);
+    const int k = targetComponentsIndex_.at(pCode);
     Code pNuclei[] = {Code::Helium, Code::Lithium7, Code::Oxygen,
                       Code::Neon,   Code::Argon,    Code::Iron};
     cout << "en/A ";
@@ -75,7 +75,7 @@ namespace corsika::process::sibyll {
     using namespace corsika::particles;
     using namespace units::si;
 
-    auto& universe = *(fEnvironment.GetUniverse());
+    auto& universe = *(environment_.GetUniverse());
 
     auto const allElementsInUniverse = std::invoke([&]() {
       std::set<particles::Code> allElementsInUniverse;
@@ -98,13 +98,13 @@ namespace corsika::process::sibyll {
       ++k;
       cout << "NuclearInteraction: init target component: " << ptarg << endl;
       const int ib = GetNucleusA(ptarg);
-      if (!fHadronicInteraction.IsValidTarget(ptarg)) {
+      if (!hadronicInteraction_.IsValidTarget(ptarg)) {
         cout << "NuclearInteraction::InitializeNuclearCrossSections: target nucleus? id="
              << ptarg << endl;
         throw std::runtime_error(
             " target can not be handled by hadronic interaction model! ");
       }
-      fTargetComponentsIndex.insert(std::pair<Code, int>(ptarg, k));
+      targetComponentsIndex_.insert(std::pair<Code, int>(ptarg, k));
       // loop over energies, fNEnBins log. energy bins
       for (int i = 0; i < GetNEnergyBins(); ++i) {
         // hard coded energy grid, has to be aligned to definition in signuc2!!, no
@@ -113,14 +113,14 @@ namespace corsika::process::sibyll {
         // get p-p cross sections
         auto const protonId = Code::Proton;
         auto const [siginel, sigela] =
-            fHadronicInteraction.GetCrossSection(protonId, protonId, Ecm);
+            hadronicInteraction_.GetCrossSection(protonId, protonId, Ecm);
         const double dsig = siginel / 1_mb;
         const double dsigela = sigela / 1_mb;
         // loop over projectiles, mass numbers from 2 to fMaxNucleusAProjectile
-        for (int j = 1; j < gMaxNucleusAProjectile; ++j) {
+        for (int j = 1; j < gMaxNucleusAProjectile_; ++j) {
           const int jj = j + 1;
           double sig_out, dsig_out, sigqe_out, dsigqe_out;
-          sigma_mc_(jj, ib, dsig, dsigela, gNSample, sig_out, dsig_out, sigqe_out,
+          sigma_mc_(jj, ib, dsig, dsigela, gNSample_, sig_out, dsig_out, sigqe_out,
                     dsigqe_out);
           // write to table
           cnucsignuc_.sigma[j][k][i] = sig_out;
@@ -128,7 +128,7 @@ namespace corsika::process::sibyll {
         }
       }
     }
-    cout << "NuclearInteraction: cross sections for " << fTargetComponentsIndex.size()
+    cout << "NuclearInteraction: cross sections for " << targetComponentsIndex_.size()
          << " components initialized!" << endl;
     for (auto& ptarg : allElementsInUniverse) {
       cout << "cross section table: " << ptarg << endl;
@@ -140,11 +140,11 @@ namespace corsika::process::sibyll {
   void NuclearInteraction<SetupEnvironment>::Init() {
     // initialize hadronic interaction module
     // TODO: safe to run multiple initializations?
-    if (!fHadronicInteraction.WasInitialized()) fHadronicInteraction.Init();
+    if (!hadronicInteraction_.WasInitialized()) hadronicInteraction_.Init();
 
     // check compatibility of energy ranges, someone could try to use low-energy model..
-    if (!fHadronicInteraction.IsValidCoMEnergy(GetMinEnergyPerNucleonCoM()) ||
-        !fHadronicInteraction.IsValidCoMEnergy(GetMaxEnergyPerNucleonCoM()))
+    if (!hadronicInteraction_.IsValidCoMEnergy(GetMinEnergyPerNucleonCoM()) ||
+        !hadronicInteraction_.IsValidCoMEnergy(GetMaxEnergyPerNucleonCoM()))
       throw std::runtime_error(
           "NuclearInteraction: hadronic interaction model incompatible!");
 
@@ -161,7 +161,7 @@ namespace corsika::process::sibyll {
       const int ia, particles::Code pTarget, units::si::HEPEnergyType elabnuc) {
     using namespace corsika::particles;
     using namespace units::si;
-    const int ib = fTargetComponentsIndex.at(pTarget) + 1; // table index in fortran
+    const int ib = targetComponentsIndex_.at(pTarget) + 1; // table index in fortran
     auto const ECoMNuc = sqrt(2. * corsika::units::constants::nucleonMass * elabnuc);
     if (ECoMNuc < GetMinEnergyPerNucleonCoM() || ECoMNuc > GetMaxEnergyPerNucleonCoM())
       throw std::runtime_error("NuclearInteraction: energy outside tabulated range!");
@@ -202,7 +202,7 @@ namespace corsika::process::sibyll {
           "NUCLIB!");
     }
 
-    if (fHadronicInteraction.IsValidTarget(TargetId)) {
+    if (hadronicInteraction_.IsValidTarget(TargetId)) {
       auto const sigProd = ReadCrossSectionTable(iBeamA, TargetId, LabEnergyPerNuc);
       cout << "cross section (mb): " << sigProd / 1_mb << endl;
       return std::make_tuple(sigProd, 0_mb);
@@ -269,8 +269,8 @@ namespace corsika::process::sibyll {
 
     // energy limits
     // TODO: values depend on hadronic interaction model !! this is sibyll specific
-    if (ElabNuc >= 8.5_GeV && ECoMNN >= gMinEnergyPerNucleonCoM &&
-        ECoMNN < gMaxEnergyPerNucleonCoM) {
+    if (ElabNuc >= 8.5_GeV && ECoMNN >= gMinEnergyPerNucleonCoM_ &&
+        ECoMNN < gMaxEnergyPerNucleonCoM_) {
 
       // get target from environment
       /*
@@ -347,7 +347,7 @@ namespace corsika::process::sibyll {
         (vP.GetNuclearA() - vP.GetNuclearZ()) * particles::Neutron::GetMass();
     cout << "NuclearInteraction: projectile mass: " << ProjMass / 1_GeV << endl;
 
-    fCount++;
+    count_++;
 
     const CoordinateSystem& rootCS =
         RootCoordinateSystem::GetInstance().GetRootCoordinateSystem();
@@ -360,7 +360,7 @@ namespace corsika::process::sibyll {
     cout << "Interaction: time: " << tOrig << endl;
 
     // projectile nucleon number
-    const int kAProj = vP.GetNuclearA(); // GetNucleusA(ProjId);
+    const int kAProj = vP.GetNuclearA();
     if (kAProj > GetMaxNucleusAProjectile())
       throw std::runtime_error("Projectile nucleus too large for NUCLIB!");
 
@@ -400,7 +400,7 @@ namespace corsika::process::sibyll {
     HEPEnergyType EcmNN = PtotNN4.GetNorm();
     cout << "NuclearInteraction: nuc-nuc cm energy: " << EcmNN / 1_GeV << endl;
 
-    if (!fHadronicInteraction.IsValidCoMEnergy(EcmNN)) {
+    if (!hadronicInteraction_.IsValidCoMEnergy(EcmNN)) {
       cout << "NuclearInteraction: nuc-nuc. CoM energy too low for hadronic "
               "interaction model!"
            << endl;
@@ -446,13 +446,13 @@ namespace corsika::process::sibyll {
       cout << "target component: " << targetId << endl;
       cout << "beam id: " << beamId << endl;
       const auto [sigProd, sigEla] =
-          fHadronicInteraction.GetCrossSection(beamId, targetId, EcmNN);
+          hadronicInteraction_.GetCrossSection(beamId, targetId, EcmNN);
       cross_section_of_components[i] = sigProd;
       [[maybe_unused]] auto sigElaCopy = sigEla; // ONLY TO AVOID COMPILER WARNINGS
     }
 
     const auto targetCode =
-        mediumComposition.SampleTarget(cross_section_of_components, fRNG);
+        mediumComposition.SampleTarget(cross_section_of_components, RNG_);
     cout << "Interaction: target selected: " << targetCode << endl;
     /*
       FOR NOW: allow nuclei with A<18 or protons only.
@@ -463,7 +463,7 @@ namespace corsika::process::sibyll {
     if (IsNucleus(targetCode)) kATarget = GetNucleusA(targetCode);
     if (targetCode == particles::Proton::GetCode()) kATarget = 1;
     cout << "NuclearInteraction: nuclib target code: " << kATarget << endl;
-    if (!fHadronicInteraction.IsValidTarget(targetCode))
+    if (!hadronicInteraction_.IsValidTarget(targetCode))
       throw std::runtime_error("target outside range. ");
     // end of target sampling
 
@@ -473,7 +473,7 @@ namespace corsika::process::sibyll {
     // (needed to determine number of nucleon-nucleon scatterings)
     const auto protonId = particles::Proton::GetCode();
     const auto [prodCrossSection, elaCrossSection] =
-        fHadronicInteraction.GetCrossSection(protonId, protonId, EcmNN);
+        hadronicInteraction_.GetCrossSection(protonId, protonId, EcmNN);
     const double sigProd = prodCrossSection / 1_mb;
     const double sigEla = elaCrossSection / 1_mb;
     // sample number of interactions (only input variables, output in common cnucms)
@@ -602,7 +602,7 @@ namespace corsika::process::sibyll {
               PprojNucLab.GetSpaceLikeComponents(), pOrig, tOrig});
       // create inelastic interaction
       cout << "calling HadronicInteraction..." << endl;
-      fHadronicInteraction.DoInteraction(inelasticNucleon);
+      hadronicInteraction_.DoInteraction(inelasticNucleon);
     }
 
     cout << "NuclearInteraction: DoInteraction: done" << endl;
diff --git a/Processes/Sibyll/NuclearInteraction.h b/Processes/Sibyll/NuclearInteraction.h
index 4d12647f21b00415f8992fa796513fe9ee1eed5f..199901cb8cd3b1061b6b2c2a30ea1f37e77d0e03 100644
--- a/Processes/Sibyll/NuclearInteraction.h
+++ b/Processes/Sibyll/NuclearInteraction.h
@@ -27,8 +27,8 @@ namespace corsika::process::sibyll {
   class NuclearInteraction
       : public corsika::process::InteractionProcess<NuclearInteraction<TEnvironment>> {
 
-    int fCount = 0;
-    int fNucCount = 0;
+    int count_ = 0;
+    int nucCount_ = 0;
 
   public:
     NuclearInteraction(corsika::process::sibyll::Interaction&, TEnvironment const&);
@@ -39,14 +39,14 @@ namespace corsika::process::sibyll {
     corsika::units::si::CrossSectionType ReadCrossSectionTable(
         const int, corsika::particles::Code, corsika::units::si::HEPEnergyType);
     corsika::units::si::HEPEnergyType GetMinEnergyPerNucleonCoM() {
-      return gMinEnergyPerNucleonCoM;
+      return gMinEnergyPerNucleonCoM_;
     }
     corsika::units::si::HEPEnergyType GetMaxEnergyPerNucleonCoM() {
-      return gMaxEnergyPerNucleonCoM;
+      return gMaxEnergyPerNucleonCoM_;
     }
-    int constexpr GetMaxNucleusAProjectile() { return gMaxNucleusAProjectile; }
-    int constexpr GetMaxNFragments() { return gMaxNFragments; }
-    int constexpr GetNEnergyBins() { return gNEnBins; }
+    int constexpr GetMaxNucleusAProjectile() { return gMaxNucleusAProjectile_; }
+    int constexpr GetMaxNFragments() { return gMaxNFragments_; }
+    int constexpr GetNEnergyBins() { return gNEnBins_; }
 
     template <typename Particle>
     std::tuple<corsika::units::si::CrossSectionType, corsika::units::si::CrossSectionType>
@@ -59,21 +59,21 @@ namespace corsika::process::sibyll {
     corsika::process::EProcessReturn DoInteraction(Projectile&);
 
   private:
-    TEnvironment const& fEnvironment;
-    corsika::process::sibyll::Interaction& fHadronicInteraction;
-    std::map<corsika::particles::Code, int> fTargetComponentsIndex;
-    corsika::random::RNG& fRNG =
+    TEnvironment const& environment_;
+    corsika::process::sibyll::Interaction& hadronicInteraction_;
+    std::map<corsika::particles::Code, int> targetComponentsIndex_;
+    corsika::random::RNG& RNG_ =
         corsika::random::RNGManager::GetInstance().GetRandomStream("s_rndm");
-    static constexpr int gNSample =
+    static constexpr int gNSample_ =
         500; // number of samples in MC estimation of cross section
-    static constexpr int gMaxNucleusAProjectile = 56;
-    static constexpr int gNEnBins = 6;
-    static constexpr int gMaxNFragments = 60;
+    static constexpr int gMaxNucleusAProjectile_ = 56;
+    static constexpr int gNEnBins_ = 6;
+    static constexpr int gMaxNFragments_ = 60;
     // energy limits defined by table used for cross section in signuc.f
     // 10**1 GeV to 10**6 GeV
-    static constexpr corsika::units::si::HEPEnergyType gMinEnergyPerNucleonCoM =
+    static constexpr corsika::units::si::HEPEnergyType gMinEnergyPerNucleonCoM_ =
         10. * 1e9 * corsika::units::si::electronvolt;
-    static constexpr corsika::units::si::HEPEnergyType gMaxEnergyPerNucleonCoM =
+    static constexpr corsika::units::si::HEPEnergyType gMaxEnergyPerNucleonCoM_ =
         1.e6 * 1e9 * corsika::units::si::electronvolt;
   };