+++ /dev/null
-/**
- * @file GRP.C
- * @author Christian Holm Christensen <cholm@nbi.dk>
- * @date Wed Aug 20 10:00:39 2014
- *
- * @brief Class that hold summary of GRP data.
- *
- *
- */
-// #include <fstream>
-
-/**
- * Class that hold summary of GRP data, and has methods to obtain
- * these, either from a previously dumped file, or directly from OCDB.
- *
- * This is used by the simulation setup to ensure we have the proper
- * beam settings for an anchor run.
- */
-struct GRPData
-{
- /**
- * A beam
- */
- struct Beam
- {
- UInt_t z;
- UInt_t a;
- /**
- * Get the per nucleon beam energy given a per charge beam energy
- *
- * @param e Per charge beam energy
- *
- * @return Per nucleon beam energy
- */
- Float_t GetEnergy(Float_t e) const
- {
- return e * sqrt(float(z)/a);
- }
- /**
- * Check if this is a proton
- *
- * @return True if z and a are 1
- */
- Bool_t IsP() const { return z == 1 && a == 1; }
- /**
- * Check if this is a nucleus
- *
- * @return true if not P
- */
- Bool_t IsA() const { return !IsP(); }
- /**
- * Get the beam type name
- *
- * @return P or A
- */
- const char* Name() { return (IsP() ? "P" : IsA() ? "A" : ""); }
- /**
- * Set the beam type from single beam spec from LHC
- *
- * @param b Beam type from LHC
- */
- void Set(UInt_t b)
- {
- z = b % 1000;
- a = b / 1000;
- }
- /**
- * Set from either a full LHC spec or from ALICE spec
- *
- * @param b Beam
- */
- void Set(const TString& b)
- {
- b.ToUpper();
- a = 0;
- z = 0;
- if (b.EqualTo("P") || b.EqualTo("PROTON")) {
- z = a = 1;
- }
- else if (b.EqualTo("A") || b.BeginsWidth("PB")) {
- z = 82;
- a = 208;
- }
- }
- };
- UInt_t beamEnergy; // Total energy in center of mass
- UInt_t energy; // Center of mass energy per nucleon
- TString period; // The period
- UInt_t run; // The run number
- Beam beam1; // Target beam
- Beam beam2; // Projectile beam
- /**
- * Constructor.
- *
- * @param r Run number
- */
- GRPData(UInt_t r)
- : beamEnergy(0), energy(0), period(""), beam1(), beam2(), run(r)
- {
- Info("GRP", "Will try from file %s", FileName());
- if (!ReadFromFile()) {
- Warning("GRP", "Failed to read from file, trying from OCDB");
- if (!ReadFromOCDB(run))
- Fatal("GRP", "Failed to get GRP values");
- }
- Print();
- }
- /**
- * Print information
- *
- */
- void Print()
- {
- Printf("%s run %d\n"
- " Beam energy: %d GeV\n"
- " sqrt(s_NN): %d GeV\n"
- " Beam 1: %s (%d %d)\n"
- " Beam 2: %s (%d %d)",
- period.Data(), run, beamEnergy, energy,
- beam1.Name(), beam1.a, beam1.z,
- beam2.Name(), beam2.a, beam2.z);
- }
- /**
- * Check if this run was a p-p run
- *
- * @return Return true if both beams are p
- */
- Bool_t IsPP() const { return beam1.IsP() && beam2.IsP(); }
- /**
- * Check if this run was a p-A run
- *
- * @return Return true beam 1 is p and 2 is A
- */
- Bool_t IsPA() const { return beam1.IsP() && beam2.IsA(); }
- /**
- * Check if this run was a A-p run
- *
- * @return Return true beam 1 is A and 2 is p
- */
- Bool_t IsAP() const { return beam1.IsA() && beam2.IsP(); }
- /**
- * Check if this run was a A-A run
- *
- * @return Return true if both beams are A
- */
- Bool_t IsAA() const { return beam1.IsA() && beam2.IsA(); }
- /**
- * Get the year
- *
- * @return Year
- */
- UInt_t Year() const
- {
- TString tmp = period(3,2);
- return tmp.Atoi() + 2000;
- }
- const char* FileName() const { return "grp.dat"; }
- /**
- * Get unsigned int value from string value of TObjString
- *
- * @param o Object
- *
- * @return value
- */
- static UInt_t Obj2UInt(const TObject* o)
- {
- return (static_cast<TObjString*>(o))->String().Atoi();
- }
- /**
- * Read values from a file
- *
- * @return true on success
- */
- Bool_t ReadFromFile()
- {
- if (gSystem->AccessPathName(FileName())) {
- Info("GRP", "Cannot open file %s", FileName());
- return false;
- }
-
- std::ifstream* pin = new std::ifstream("grp.dat");
- std::ifstream& in = *pin;
- TString line;
- TString env;
- do {
- line.ReadLine(in);
- if (line.IsNull()) continue;
- if (line[0] == '#') continue;
- env = line;
- break;
- } while (!in.eof());
- if (env.IsNull()) {
- Info("GRP", "No line found");
- return false;
- }
- Info("GRP", "Got the line %s", env.Data());
- TObjArray* tokens = env.Tokenize(":");
- if (tokens->GetEntries() < 8) {
- Warning("GRP", "Failed to get enough field from GRP_SUMMARY=%s",
- env.Data());
- return false;
- }
- period = tokens->At(0)->GetName();
- run = Obj2UInt(tokens->At(1));
- beamEnergy = Obj2UInt(tokens->At(2));
- energy = Obj2UInt(tokens->At(3));
- beam1.a = Obj2UInt(tokens->At(4));
- beam1.z = Obj2UInt(tokens->At(5));
- beam2.a = Obj2UInt(tokens->At(6));
- beam2.z = Obj2UInt(tokens->At(7));
- pin->close();
- delete pin;
- return true;
- }
- /**
- * Read values from OCDB. Also dumps values to file.
- *
- * @param r run number
- *
- * @return true on success
- */
- Bool_t ReadFromOCDB(UInt_t r)
- {
- AliCDBManager* cdb = AliCDBManager::Instance();
- cdb->SetDefaultStorageFromRun(r);
- cdb->SetRun(r);
- AliCDBEntry* ent = cdb->Get("GRP/GRP/Data");
- if (!ent) {
- Warning("GRP", "No GRP data found");
- cdb->SetRun(-1);
- return false;
- }
- // Info("GRP", "Got GRP");
- // ent->PrintMetaData();
-
- AliGRPObject* obj = static_cast<AliGRPObject*>(ent->GetObject());
- obj->Print();
- run = r;
- period = obj->GetLHCPeriod();
- beamEnergy = TMath::Ceil(obj->GetBeamEnergy());
- TString beam1T = obj->GetSingleBeamType(0);
- TString beam2T = obj->GetSingleBeamType(1);
-
- if (!beam1T.IsNull() && !beam2T.IsNull()) {
- beam1.Set(beam1T.Atoi());
- beam2.Set(beam2T.Atoi());
- }
- else {
- TString beamType = obj->GetBeamType();
- if (beamType.IsNull()) {
- Warning("GRP", "No beam type");
- cdb->SetRun(-1);
- return false;
- }
-
- TObjArray* ab = beamType.Tokenize("-");
- ab->ls();
- beam1T = ab->At(0)->GetName();
- beam2T = ab->At(1)->GetName();
- beam1.Set(beam1T);
- beam2.Set(beam2T);
- }
- // Massage the beam energy in case we had sqrt{s_NN} instead of
- // beam energy.
- if (TMath::Abs(beamEnergy - 1379.8) < 10 && beam1.IsA() && beam2.IsA())
- beamEnergy = 3500;
- energy = TMath::Ceil(2*beamEnergy * TMath::Sqrt(Float_t(beam1.z*beam2.z)/
- (beam1.a*beam2.a)));
-
- const char* fn = FileName();
- std::ofstream* pout = new std::ofstream(fn);
- std::ofstream& out = *pout;
- out << "# PERIOD:RUN:BEAMENERGY:ENERGY:BEAM1A:BEAM1Z:BEAM2A:BEAM2Z\n"
- << period << ":"
- << run << ":"
- << beamEnergy << ":"
- << energy << ":"
- << beam1.a << ":"
- << beam1.z << ":"
- << beam2.a << ":"
- << beam2.z << "\n"
- << "# EOF " << std::endl;
- pout->close();
- delete pout;
- cdb->SetRun(-1);
- return true;
- }
- /**
- * Get the value of an environment variable as a unsigned int
- *
- * @param envName Enviroment variable name
- * @param def Default value
- *
- * @return As unsigned int, or default
- */
- static UInt_t Env2UInt(const char* envName, UInt_t def)
- {
- TString val(gSystem->Getenv(envName));
- if (val.IsNull()) return def;
- return UInt_t(val.Atoll());
- }
-};
-GRPData* grp;
-void GRP(UInt_t run=0)
-{
- grp = new GRPData(run);
-}
-//
-// EOF
-//
-
-
-
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff