THE EGS5 CODE SYSTEM

HATCH-call comes nextRAYLEIGH OPTION REQUESTED FOR MEDIUM NUMBER 1EGS SUCCESSFULLY ’HATCHED’ FOR ONE MEDIUM.Knock-on electrons can be created and any electron followed down to0.010 MeV kinetic energyBrem photons can be created and any photon followed down to0.010 MeVFor50.0 keV photons incident on 0.5cm of H2O with PCUT=0.010 MeVTransmitted primaries= 88.89% ave energy= 0.050 MeVFraction Rayleigh scattering= 0.95% ave energy= 0.049 MeVFraction Compton scattering only= 8.60% ave energy= 0.046 MeV3.6 Tutorial 6 (Program tutor6.f)One of the important features of the EGS5 Code System is that the user has direct control overthe geometry in which the radiation transport takes place, and rather complex geometries can bedescribed in a very simple manner with the aid of geometry subprograms. Subroutine HOWFAR, inthe previous examples, was made more detailed than necessary for demonstration purposes. Onecan greatly simplify things, particularly for the simple slab geometry case, as shown in the followingexcerpts from tutor6.!***********************************************************************!! **************! * *! * tutor6.f *! * *! **************!! An EGS5 user code. It lists the particles escaping from the back! of a 1 mm Ta plate when a pencil beam of 20 MeV electrons! is incident on it normally.!! NOTE: This program is the same as TUTOR1.f except that the! geometry subroutine (HOWFAR) is simplified by the use of174