GCR-SPE

    Initialises Galactic Cosmic Ray or Solar Particle Event calculations

    See also SPECSOUR

     
WHAT(1)
 = i0 + 1000 * i1
               i0 = 0: centered dipole field, geomagnetic coordinates
                       (used also for computing rigidity cut-off's
                        in the spectrum generating routine)
                  = 1: exact multipole fields, geographic coordinates
                  = 2: undefined, standard MAGFLD user routine called for
                       regions with magnetic field
                  = 3: dipolar field for infinite plane at given latitude
                  > 3: undefined, standard MAGFLD user routine called for
                       regions with magnetic field
               i1 = number of atmospheric shells (see Note 2)
                  = 10000: no atmospheric shells
                  = 51 :  50 atmospheric shells (not supported)
                  = 101: 100 atmospheric shells
                  = 201: 200 atmospheric shells (not supported)
               
Default
: centered dipole field, 100 shells

     
WHAT(2)
 = not used

     
WHAT(3)
 = not used

     
WHAT(4)
 = Earth radius (
Default
 provided)

     
WHAT(5)
 = Earth equatorial magnetic field (
Default
 provided)

     
WHAT(6)
 = not used

     
SDUM
 =    name identifying both the spectra files (estension .spc)
               and the data file (estension .sur) produced  by the
               auxiliary program atmloc_2011.f  (see Note 2).

     
Default
 (command GCR-SPE not given): no GCR/SPE calculation.


     
Notes:
        1) Cosmic ray calculations, initialised by GCR-SPE, are defined by means
           of command SPECSOUR and a number of auxiliary programs. Details are
           presented in Chap. 16}

        2) The cards for the geometry description of the atmospheric
           shells must be prepared using the auxiliary programs and
           datacards in the directory $FLUPRO/gcrtools.
           Program Atmloc_2011.f writes a file  atmloc.geo,
           containing the geometry input to be inserted into the FLUKA input
           file (or to be read by setting  
WHAT(3)
 GEOBEGIN card),
           a file atmlocmat.cards containing the extra material assignments,
           and a file atmloc.sur containing auxiliary data and the
           scoring areas. The user shall rename the file  atmloc.sur to
            <xxxxxxx>.sur, where  <xxxxxx> is an identifier of exactly 7
           characters which must appear also in the input spectra file names:
           the spectra must have the names <zz><xxxxxxx>.spc, where  <zz>
           is the atomic number of the primary.
           The example spectra distributed with  FLUKA come with two
           identifiers: <zz>phi0465 for solar minimum and  <zz>phi1440 for
           solar maximum, and with zz=01-28.

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