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0001 ###################################
0002 # parameters list
0003 ###################################
0004 #
0005 echo_level 1 # control the mount of message output to screen
0006 mode 3 # MUSIC running mode
0007 # 1: Does everything. Evolution. Computation of thermal spectra.
0008 # Resonance decays. Observables.
0009 # Only compatible with freeze_out_method=3 and pseudofreeze=1
0010 # 2: Evolution only.
0011 # 3: Compute all thermal spectra only.
0012 # 4: Resonance decays only.
0013 # 13: Compute observables from previously-computed thermal spectra
0014 # 14: Compute observables from post-decay spectra
0015 #
0016 #
0017 ###################################
0018 # parameters for initial conditions
0019 ###################################
0020 Initial_profile 42 # type of initial condition
0021 # 0: for Gubser flow test (future)
0022 # 1: Optical Glauber model
0023 # 3: MC-Glauber model
0024 # 8: Read in initial profile from a file
0025 # (e.g., IP-Glasma)
0026 # 41: Initial condition from the JETSCAPE
0027 initialize_with_entropy 0 # 0: with energy density
0028 # 1: with entropy density
0029
0030 # read in initial conditions from external file
0031 Initial_Distribution_input_filename example_inputs/filename
0032 # the filename of initial profile
0033 # (for Initial_profile == 8)
0034 s_factor 1.00 # normalization factor read in
0035 # initial data file
0036 # 57.0 for AuAu@200 GeV
0037 Eta_plateau_size 20. # size of the plateau in eta_s
0038 Eta_fall_off 0.7 # the scale of the fall off of the
0039 # plateau in eta_s direction
0040 #
0041 # parameters for Glauber model (effective only when Initial_profile == 1)
0042 binary_collision_scaling_fraction 0.14 # for wounded nucleon/binary
0043 # collision mixing ratio in the
0044 # Glauber model
0045 Maximum_energy_density 54. # maximum energy density for Glauber
0046 # initial condition
0047 SigmaNN 42.1 # NN inelastic cross section for
0048 # Glauber model
0049 Impact_parameter 9. # impact parameter (fm)
0050 Target Au # type of target nucleus
0051 Projectile Au # type of projectile nucleus
0052 # parameters for Glauber model (effective only when Initial_profile == 3)
0053 sigma_0 0.4 # the width of the gaussian
0054 # for entropy density profile
0055 bmin 0.0 # minimum value of impact parameter
0056 bmax 2.0 # maximum value of impact parameter
0057 #
0058 #
0059 #######################################
0060 # parameters for hydrodynamic evolution
0061 #######################################
0062 boost_invariant 1 # whether the simulation is boost-invariant
0063 # grid information
0064 Initial_time_tau_0 0.6 # starting time of the hydrodynamic
0065 # evolution (fm/c)
0066 Total_evolution_time_tau 30. # the maximum allowed running
0067 # evolution time (fm/c)
0068 # need to be set to some large number
0069 Delta_Tau 0.02 # time step to use in the evolution [fm/c]
0070 Eta_grid_size 1.0 # spatial rapidity range
0071 # [-Eta_grid_size/2, Eta_grid_size/2 - delta_eta]
0072 Grid_size_in_eta 1 # number of the grid points in spatial
0073 # rapidity direction
0074 # Must have at least 4 cells per processor.
0075 # Must be an even number.
0076 # One cell is positioned at eta=0,
0077 # half the cells are at negative eta,
0078 # the rest (one fewer) are at positive eta
0079 X_grid_size_in_fm 20.0 # spatial range along x direction in the
0080 # transverse plane
0081 # [-X_grid_size_in_fm/2, X_grid_size_in_fm/2]
0082 Y_grid_size_in_fm 20.0 # spatial range along y direction in the
0083 # transverse plane
0084 # [-Y_grid_size_in_fm/2, Y_grid_size_in_fm/2]
0085 Grid_size_in_y 200 # number of the grid points in y direction
0086 Grid_size_in_x 200 # number of the grid points in x direction
0087 #
0088 #
0089 EOS_to_use 9 # type of the equation of state
0090 # 0: ideal gas
0091 # 1: EOS-Q from azhydro
0092 # 2: lattice EOS s95p-v1
0093 # (from Huovinen and Petreczky)
0094 # 3: lattice EOS s95p with partial
0095 # chemical equilibrium (PCE) at 150 MeV
0096 # (see https://wiki.bnl.gov/TECHQM
0097 # /index.php/QCD_Equation_of_State)
0098 # 4: lattice EOS s95p with chemical freeze
0099 # out at 155 MeV
0100 # 5: lattice EOS s95p at 160 MeV
0101 # 6: lattice EOS s95p at 165 MeV
0102 # 7: lattice EOS s95p-v1.2 for UrQMD
0103 reconst_type 1 # 0: solve energy density for hydro eqns.
0104 # 1: solve flow velocity for hydro eqns.
0105 Minmod_Theta 1.8 # theta parameter in the min-mod like limiter
0106 Runge_Kutta_order 2 # order of Runge_Kutta for temporal evolution
0107 # (must be 1 or 2)
0108 # transport coefficients
0109 Viscosity_Flag_Yes_1_No_0 1 # turn on viscosity in the evolution
0110 Include_Shear_Visc_Yes_1_No_0 1 # include shear viscous effect
0111 Shear_to_S_ratio 0.15 # value of \eta/s
0112 T_dependent_Shear_to_S_ratio 0 # flag to use temperature dep. \eta/s(T)
0113 Include_Bulk_Visc_Yes_1_No_0 0 # include bulk viscous effect
0114 Include_second_order_terms 0 # include second order non-linear coupling terms
0115 #
0116 #
0117 # switches to output evolution information
0118 store_hydro_info_in_memory 1 # flag to store hydro info in memory
0119 output_evolution_data 2 # flag to output evolution history to file
0120 outputBinaryEvolution 1 # output evolution file in binary format
0121 output_evolution_T_cut 0.14 # GeV
0122 output_evolution_every_N_eta 1 # output evolution file every Neta steps
0123 output_evolution_every_N_y 1 # output evolution file every Ny steps
0124 output_evolution_every_N_x 1 # output evolution file every Nx steps
0125 output_evolution_every_N_timesteps 5 # output evolution every Ntime steps
0126
0127 #
0128 #
0129 ###########################################
0130 # parameters for freeze out and Cooper-Frye
0131 ###########################################
0132 Do_FreezeOut_Yes_1_No_0 1 # flag to find freeze-out surface
0133 freeze_out_method 4 # method for hyper-surface finder
0134 # 2: Schenke's more complex method
0135 freeze_surface_in_binary 1 # switch to output surface file in binary format
0136 average_surface_over_this_many_time_steps 5 # the step skipped in the tau
0137 epsilon_freeze 0.18 # the freeze out energy density (GeV/fm^3)
0138 use_eps_for_freeze_out 0 # flag to use energy density as criteria to
0139 # find freeze-out surface
0140 # 0: use temperature, 1: use energy density
0141 T_freeze 0.137 # freeze-out temperature (GeV)
0142 number_of_particles_to_include 320 # number of thermal particles to compute
0143 # for particle spectra and vn
0144 # current maximum = 320
0145 particle_spectrum_to_compute 0 # 0: Do all up to
0146 # number_of_particles_to_include
0147 # any natural number:
0148 # Do the particle with this (internal) ID
0149 pseudo_steps 51 # number of rapdity slices to compute
0150 # particle spectra
0151 pseudofreeze 1 # 0: calculated particle spectra in
0152 # equally-spaced rapidity
0153 # 1: calculated particle spectra in
0154 # equally-spaced pseudorapidity
0155 max_pseudorapidity 5.0 # the range of pseudo-rapidity
0156 # (-maximal_rapidity, maximal_rapidity)
0157 pt_steps 15 # number of points in pT
0158 min_pt 0.01 # the minimum pT value for particle spectra
0159 max_pt 3.0 # the maximum pT value for particle spectra
0160 phi_steps 40 # number of points in phi (0, 2pi)
0161 Include_deltaf 1 # flag to include shear delta f correction
0162 # in Cooper-Frye formula
0163 Inlucde_deltaf_bulk 0 # flag to include bulk delta f correction
0164 # in Cooper-Frye formula
0165
0166 #
0167 #
0168 EndOfData
