release-05-01-25/doxygen/AafhGeneration_8py_source.html

#!/usr/bin/env python3

# -*- coding: utf-8 -*-


from basf2 import set_log_level, LogLevel, create_path, process, register_module

import os

import sys


# suppress messages and during processing:

set_log_level(LogLevel.WARNING)


main = create_path()


# event info setter

main.add_module("EventInfoSetter", expList=0, runList=1, evtNumList=100)


# generator

aafh = register_module('AafhInput')

aafh.param({

    # decay mode to generate.

    # 1: e+e- -> mu+mu-L+L- where L is a user defined particle (default: tau)

    # 2: e+e- -> mu+mu-mu+mu-

    # 3: e+e- -> e+e-mu+mu-

    # 4: e+e- -> e+e-L+L- where L is a user defined particle (default: tau)

    # 5: e+e- -> e+e-e+e-

    'mode': 3,

    # to set the particle for modes 1 and 4 use set parameter "particle"

    # rejection scheme to generate unweighted events

    # 1: use rejection once for the final event weight

    # 2: use rejection per sub generator and then for the final event

    'rejection': 2,

    # max subgenerator event weight, only used if rejection is set to 2

    # (default). If this value is to low the generation will produce errors. If

    # it is to high generation runs slower.

    'maxSubgeneratorWeight': 1.0,

    # max final event weight which is always used. If this value is to low the

    # generation will produce errors. If it is to high generation runs slower.

    # ==> should be around 2-4

    'maxFinalWeight': 1.5,

    # adjust subgenerator weights so that each sub generator has same

    # probability to be called and the maximum weight is equal as well. These

    # values are printed at the end of generation when output level is set to

    # INFO. These weights strongly depend on the mode

    'subgeneratorWeights': [1.000e+00, 2.216e+01, 3.301e+03, 6.606e+03, 1.000e+00, 1.675e+00, 5.948e+00, 6.513e+00],

    # set to awfully precise

    'suppressionLimits': [1e100] * 4,

    # minimum invariant mass of the secondary pair

    'minMass': 0.50,

})

aafh.logging.log_level = LogLevel.INFO


# print generated particles

mcparticleprinter = register_module('PrintMCParticles')

mcparticleprinter.logging.log_level = LogLevel.INFO


# creating the path for the processing

main.add_module(aafh)

main.add_module(mcparticleprinter)


# process the events

process(main)