THE EGS5 CODE SYSTEM

Table B.15: Variable descriptions for COMMON block USERSC, include file egs5 usersc.f of the EGS5
distribution.
ESTEPR*
Array of factors by which to scale the energy hinge steps in various regions (default=0,
implying no scaling).
ESAVE*
Array of energies below which to discard electrons which have ranges less than the
perpendicular distances to their current region boundaries (default=0., implying no
range-based discard).
EMAXE* Maximum total energy (in MeV) of any electron in the simulation.
Table B.16: Variable descriptions for COMMON block USERVR, include file egs5 uservr.f of the EGS5
distribution.
CEXPTR* Constant used in exponential transform of photon collision distance (default=0, no
transformation).
include ’include/egs5_epcont.f’
include ’include/egs5_media.f’
include ’include/egs5_misc.f’
include ’include/egs5_thresh.f’
include ’include/egs5_uphiot.f’
include ’include/egs5_useful.f’
include ’include/egs5_usersc.f’
include ’include/randomm.f’
! epcont contains iausfl
! media contains the array media
! misc contains med
! thresh contains ae and ap
! uphiot contains PI
! useful contains RM
! usersc contains emaxe
Note that most of the variables accessed in a typical user code MAIN program can be found in the
COMMON files referenced by the include statements in the above example. Other variables which
a user code might wish to access and the EGS5 include files which contain them were given in
Tables B.1 through B.17 of the previous section.
Note that all EGS5 variables are explicitly declared (all EGS5 subroutines and functions begin
with the statement IMPLICT NONE), and that all floating-point variables (except some of those used
in the random number generator and in sample user codes which call intrinsic functions to compute
CPU time) are declared as REAL*8.
Table B.17: Variable descriptions for COMMON block USERXT, include file egs5 userxt.f of the EGS5
distribution.
IPHTER*
Array of flags for turning on (=1) sampling of angular distributions of photoelectrons
in various regions (default=0, implying emission in direction of incident photon).
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