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 #ifndef CosmicMuonParameters_h
 #define CosmicMuonParameters_h
 //
 // Parameters for CosmicMuonGenerator by droll (05/DEC/2005)
 //
 //
 // added plug and clay(moraine) specific constants, sonne (15/Jan/2009)
 //
 #include "TMath.h"
 
 // flags
 const bool Debug = false;        // debugging printout
 const bool EventDisplay = true;  // display single events (if ROOT_INTERACTIVE is defined as true)
 
 // algorithmic constants
 const double MinStepSize = 10.;  // minimal propagation step size [mm] must be small compared to target size
 // mathematical constants
 const double Pi = acos(-1.);       // [rad]
 const double TwoPi = 2.0 * Pi;     // [rad]
 const double Deg2Rad = Pi / 180.;  // [deg] -> [rad]
 const double Rad2Deg = 180. / Pi;  // [rad] -> [deg]
 // physical constants
 const double SpeedOfLight = 299.792458;  // [mm/ns]
 const double MuonMass = 0.105658357;     // [GeV/c^2]
 //const double ChargeFrac = 0.545454545; // n(mu+)/n(mu-) ~ 1.2 defined in CMSCGEN
 // geometry
 const double SurfaceOfEarth = 88874.;  // Y-distance to surface of earth [mm]
 const double Z_PX56 = -14000.;         // [mm] Z position of PX56 centre [mm]
 /*
 // densities of materials
 const double RhoAir  = 0.001214; // [g cm^-3]
 const double RhoWall = 2.5; // [g cm^-3]
 const double RhoRock = 2.5; // [g cm^-3]
 const double RhoClay = 2.3; // [g cm^-3]
 const double RhoPlug = 2.5; // [g cm^-3]
 */
 // width of clay layer between surface and rock
 const double DefaultClayWidth = 50000.;  // [mm]
 
 //plug constants
 const double PlugWidth = 2250.;        // [mm]
 const double PlugXlength = 20600.;     // [mm]
 const double PlugZlength = 16000.;     // [mm]
 const double PlugNoseXlength = 6400.;  // [mm]
 const double PlugNoseZlength = 1800.;  // [mm]
 const double PlugOnShaftVx = 0.;       // [mm]
 const double PlugOnShaftVz = Z_PX56;   // [mm]
 
 // cylinder around CMS (with R, +-Z)
 // WARNING: These values will be set to tracker-only setup if "TrackerOnly=true" in .cfg-file.
 // This means R=1200 and Z=2800, no material or B-field outside is considered
 const double RadiusCMS = 8000.;      // [mm]
 const double Z_DistCMS = 15000.;     // [mm]
 const double RadiusTracker = 1200.;  // [mm]
 const double Z_DistTracker = 2800.;  // [mm]
 // cylinder actually used in the code
 //const double RadiusTarget = RadiusCMS; // [mm]  //now controlled by cfg-file!!!
 //const double Z_DistTarget = Z_DistCMS; // [mm]  //now controlled by cfg-file!!!
 
 //define different materials
 enum { Unknown = 0, Plug, Wall, Air, Clay, Rock };
 
 //Parameters for upward muons from neutrinos
 const double N_A = 6.022e23;       //mol^-1
 const double alpha = 2.;           //MeV/(g/cm^2)
 const double beta_const = 3.9e-6;  //(g/cm^2)^-1
 const double epsilon = alpha / beta_const;
 const double Rearth = 6370.e6;  //mm
 
 //Multi Muon relevant parameters
 const double NorthCMSzDeltaPhi = 3. / 8. * Pi;  //rad (Pi/2 if CMS -x = North)
 const int max_Trials = 200000;
 
 #endif

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