= new keywords and new features for old keywords =



          


|| keyword || meaning || range  || default || type || remarks||
|| ''bmt_precession'' || compute the depolarization due to BMT precession  || 0, 1 || 0 ||   integer ||  ||
|| ''cuts_from_loaded_beam'' || calculate grid cuts from actually loaded beam   || 0,1  || 0 ||   int || if load_beam = 1; beam supposed to be rather gaussian ||
|| ''cut_x_factor'' || value of cut_x in units of sigma_x  || 0., infinity || 3.0 ||   double || cut_x = cut_x_factor*sigma_x || 
|| ''cut_y_factor'' || value of cut_y in units of sigma_y  || 0., infinity || 3.0 ||   double || cut_y = cut_y_factor*sigma_y || 
|| ''cut_z_factor'' || value of cut_z in units of sigma_z  || 0., infinity || 3.0 ||   double || cut_z = cut_z_factor*sigma_z || 
|| ''do_bhabhas'' || bhabha treatment || 0, 2  ||  0 || int || 1 : reading bhabha.ini only, 2 : reading both bhabha.ini and bhabha_photon.ini ||
|| ''do_dump'' ||                                                   || 0, 1 || 0   ||   int ||  dump particles and photons each step dump files are named [wiki:BeamFormat b1.n, b2.n ] for particles and bp1.N, bp2.n for photons (n = number of the step) (see [wiki:ReleaseNote1.0.6 release note 1.0.6 ])|| 
|| ''dump_particle'' ||                                                   || 0, infinity || 1   ||   int ||  frequency of particle dump (see [wiki:ReleaseNote1.0.6 release note 1.0.6 ])|| 
|| ''dump_step'' ||                                                   || 0, infinity || 1   ||   int ||  frequency of slice dump (see [wiki:ReleaseNote1.0.6 release note 1.0.6 ])|| 
|| ''load_beam'' || loading beams from electron.ini and positron.ini files  || 0 or 3 (PLACET)  || 0 ||   int ||
|| ''polar_x'' ||                                                   || 0., 1. || 0. ||   double ||  effective only if  bmt_precession|| 
|| ''polar_y'' || components of the initial polarization vector     || 0., 1. || 0. ||   double || see [wiki:ReleaseNote1.0.6 release note 1.0.6 ] || 
|| ''polar_z'' ||                                                   || 0., 1. || 1.   ||   double || for use  || 
|| ''rndm_seed'' || value of the seed for random generation || 0, infinity  ||  0 || long int ||
|| ''store_secondaries''^1^ || storing initial and final secondaries (pairs, bhabhas, compton...)  || 0, 1  || 0 ||  int ||
|| ''track_secondaries''^2^ || tracking of secondaries (pairs, bhabhas, compton...)  || 0, 1  || 0 ||  int ||
|| ''ST_spin_flip'' || compute the depolarization due to Sokolov-Ternov spin flip, in beamstrahlung  || 0, 1 || 0 ||   integer ||  bmt_precession = 1 is mandatory || 
|| ''alpha_x, beta_x, alpha_y, beta_y'' || twiss parameters (beam emittance)  ||  infinity || 0 ||   double ||  || 
|| '' beam_crossing_angle '' || presence of a crossing angle between the two beams    ||  0,1 || 0 ||   int || without polarization || 
|| '' crossing_angle_value '' || value of  crossing angle (degrees)   ||  0,infinity || 0 ||   double  || active only when beam_crossing_angle=1 || 



1 replaces old keyword ''store_pairs''; output files : '''secondaries0.dat''' and '''secondaries.dat'''

2 replaces old keyword ''track_pairs'', output file : '''secondaries.dat''' (in place of ''pairs.dat'')