Computer Programs
CCC-0331 EGS4.
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CCC-0331 EGS4.

EGS4, Electron Photon Shower Simulation by Monte-Carlo

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1. NAME OR DESIGNATION OF PROGRAM

EGS4.

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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.
Program name Package id Status Status date
EGS4 CCC-0331/07 Tested 07-APR-1997
EGS4 CCC-0331/08 Tested 29-JUL-1998

Machines used:

Package ID Orig. computer Test computer
CCC-0331/07 UNIX W.S. UNIX W.S.
CCC-0331/08 IBM PC PC Pentium 200
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3. DESCRIPTION OF PROGRAM OR FUNCTION

The EGS code system is one of a chain of three codes designed to solve the electromagnetic shower problem by Monte Carlo simulation. This chain makes possible simulation of almost any electron-photon transport problem conceivable. The structure of the system, with its global features, modular form, and structured programming, is readily adaptable to virtually any interfacing scheme that is desired on the part of the user.

 

EGS4 is a package of subroutines plus block data with a flexible user interface. This allows for greater flexibility without requiring the user to be overly familiar with the internal details of the code. Combining this with the macro facility capabilities of the Mortran3 language, this reduces the likelihood that user edits will introduce bugs into the code. EGS4 uses material cross section and branching ratio data created and fit by the companion code, PEGS4.

 

EGS4 allows for the implementation of importance sampling and other variance reduction techniques such as leading particle biasing, splitting, path length biasing, Russian roulette, etc.

 

See http://rcwww.kek.jp/research/egs/ for current information on EGS

For EGS-5, please visit http://rcwww.kek.jp/research/egs/egs5.html, and for EGS5 sources see http://rcwww.kek.jp/research/egs/egs5_source/egs5.160113.tar.gz

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4. METHODS

EGS employs the Monte Carlo method of solution. It allows all of the fundamental processes to be included and arbitrary geometries can be treated also. Other minor processes, such as photoneutron production, can be added as a further generalization. Since showers develop randomly according to the quantum laws of probability, each shower is different. We again are led to the Monte Carlo method.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

None noted.

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6. TYPICAL RUNNING TIME

The running time is dependent upon the problem being solved.

CCC-0331/07
This version is the UNIX Version 3.0. It was installed and the sample problems have been executed by the NEA Data Bank in the following systems:
1) DEC 3000 Model 300X (Alpha architecture workstation) under DEC OSF/1 V3.2
2) Sun Solaris (UNIX System V Release 4.0 (psisun)) under SunOS 5.3
The following sample problems and benchmark programs are provided with this package:
tutor1    \
tutor2    |
tutor3    |
tutor4    \___> seven tutorial cases
tutor4p   /
tutor5    |
tutor6    |
tutor7    /
xyzdos   - timing benchmark code (running on 2 sample problems)
dosrz    - general purpose dose scoring code for cylindrical-
           planar geometry
flurz    - general purpose fluence scoring code for cylindrical-
           planar geometry
xyzp     - running the xyzdos benchmark code using the PRESTA
           algorithm (PRESTA = Parameter Reduced Electron Step
           Transport Algorithm, special algorithm for electron
           transport)
The seven tutorial codes running time range from a few seconds to a
few dozens of seconds. In the DEC-Alpha workstation, the benchmark code xyzdos, takes about 90 seconds to run the problem specified in  the input file 'benchf' and about 920 seconds to run the problem specified in the input file 'benche' whereas the code xyzp, implementing the PRESTA algorithm, takes about 120 seconds to run the test case of input file 'benchf' and about 1460 to run the test  case of input file 'benche'.

CCC-0331/08
This version is the PC Version 3.1. It was installed and the sample problems have been executed by the NEA Data Bank in a PC DELL Optiplex GXPRO equipped with a Pentium PRO processor at 200 MHz,
total memory 64 MByte, under Windows NT 4.00 (execution under DOS).
    The following sample problems and benchmark programs are provided        
with this package:                                                          
    tutor1    \
    tutor2    |
    tutor3    |
    tutor4    \___> seven tutorial cases
    tutor4p   /
    tutor5    |
    tutor6    |
    tutor7    /
    xyzdos   - timing benchmark code (running on 2 sample problems)             
    dosrz    - general purpose dose scoring code for cylindrical-               
               planar geometry
    flurz    - general purpose fluence scoring code for cylindrical-            
               planar geometry
    xyzp     - running the xyzdos benchmark code using the PRESTA               
               algorithm (PRESTA = Parameter Reduced Electron Step              
               Transport Algorithm, special algorithm for electron              
               transport)
    The seven tutorial codes running time range from a few tens of seconds to a few seconds. The benchmark code XYZDOS, takes about 21.2 seconds to run the problem specified in the input file BENCHF.INP and about 220.9 seconds to run the problem specified in the input file BENCHE.INP; the CPU time required to execute the benchmark code XYZP on the input files BENCHF.INP and BENCHE.INP is of about 21.2 seconds and 447.9 seconds respectively. The code DOSRZ takes about 137.5 seconds to run the test case of input file CO60SPEC.INP (100000 histories) and about 152.3 seconds to run the test case of input file CO60MONO.INP (100000 histories).
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8. RELATED OR AUXILIARY PROGRAMS

DATA LIBRARIES: A variety of automated data sets (18 files) is provided. EGS (Electron-Gamma Shower), based on code development in the early 1960s by H.H. Nagel, represents several years of additional development.

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9. STATUS
Package ID Status date Status
CCC-0331/07 07-APR-1997 Tested at NEADB
CCC-0331/08 29-JUL-1998 Tested at NEADB
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10. REFERENCES
  • Richard L. Ford and Walter R. Nelson
    The EGS Code System: Computer Programs for the Monte Carlo Simulation of Electromagnetic Cascade Showers, (Version 3) SLAC-210 (June 1978).

  • Hideo Hirayama:
    Revision of the Sternheimer Density Effect Coefficients in PEGS4, KEK Internal 95-17 (November 1995) R

CCC-0331/07, included references:
- W.R. Nelson, H. Hirayama and W.O. Rogers:
The EGS4 Code System SLAC-265 (December 1985).
- A. Bielajew:
PRESTA Information Informal Notes (July 1987).
- W.R. Nelson and T.M. Jenkins:
Writing SUBROUTINE HOWFAR for EGS4 SLAC TN-87-4, SLAC, Stanford (August 1988).
- NEA-DB:
Appendix to the EGS4 Report - Source: "Review of Particle Properties", by the
Particle Data Group Physics Letters B239, 12 April 1990 NEA-DB (10-12-93).
- A. Bielajew et al.:
History, Overview and Recent Improvements of EGS4 SLAC-PUB-6499 (NRC-PIRS-0436,
KEK Internal 94-4) (Revised June 1, 1994)
- A.F. Bielajew and D.W.O. Rogers:
PRESTA - The Parameter Reduced Electron - Step Transport Algorithm for Electron
Monte Carlo Transport PIRS No.042 (July 1986)
- A. F. Bielajew: README.general.3.0 (December 26, 1996)
- A. F. Bielajew: Directions for EGS4 Installation (October 19, 1995)
CCC-0331/08, included references:
- W.R. Nelson, H. Hirayama and W.O. Rogers:
The EGS4 Code System SLAC-265 (December 1985).
- A. Bielajew:
PRESTA Information Informal Notes (July 1987).
- W.R. Nelson and T.M. Jenkins:
Writing SUBROUTINE HOWFAR for EGS4 SLAC TN-87-4, SLAC, Stanford, California
(August 1988).
- NEA-DB:
Appendix to the EGS4 Report - Source: "Review of Particle Properties", by the
Particle Data Group Physics Letters B239, 12 April 1990 NEA-DB (10-12-93).
- A. Bielajew et al.:
History, Overview and Recent Improvements of EGS4 SLAC-PUB-6499 (NRC-PIRS-0436,
KEK Internal 94-4) (Revised June 1, 1994)
- A.F. Bielajew and D.W.O. Rogers:
PRESTA - The Parameter Reduced Electron - Step Transport Algorithm for Electron
Monte Carlo Transport PIRS No.042 (July 1986)
- A. F. Bielajew: README.general.3.0 (December 26, 1996)
- A. F. Bielajew: Directions for EGS4 Installation (October 19, 1995)
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11. HARDWARE REQUIREMENTS

An IBM 3081 or a VAX computer is required for version CCC-0331/01. The PC version runs on a Compaq 80386/20 MHz with 4-5 Mbytes of memory (RAM).

CCC-0331/07
This version for UNIX systems have been installed and executed by the NEA Data Bank in the following systems: DEC 3000 Model 300X (Alpha architecture workstation) and on a Sun Solaris (UNIX System V Release 4.0 (psisun)) About 26 MByte of disk space are required to hold ALL the package files. (This amount includes the diskspace occupied by intermediate files for MORTRAN processing, FORTRAN compilation, .obj files, executable files, input files, data files, etc.) The diskspace allocated by the executable files is of about 3.8 MByte. The diskspace allocated by the PEGS data files is of the order of 3.8 Mbyte. The diskspace required by the PEGS the density-correction data files (for elements and compounds) is of about 2.5 Mbyte.

CCC-0331/08
This version for PC systems has been installed and executed by the NEA Data Bank in a PC DELL Optiplex GXPRO equipped with a Pentium PRO processor at 200 MHz, total memory 64 MByte, under Windows NT 4.00 (DOS). About 20 MByte of disk space are required to hold ALL the  package files. (This amount includes the diskspace occupied by intermediate files for MORTRAN processing, FORTRAN compilation, .obj files, executable files, input files, data files, etc.)
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
CCC-0331/07 FORTRAN
CCC-0331/08 FORTRAN-77
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13. SOFTWARE REQUIREMENTS

A FORTRAN compiler is required. MORTRAN is a structured programming language that is implemented as a set of macros which are used by a macro- processor to translate the language into ANSI-standard FORTRAN (a preliminary step in the job). The resulting program is then run like any other FORTRAN program. The version /03 runs using the Lahey Fortran Compiler F77L/32/EM and A.I. Architect's operating system OS-386. The NDP Fortran and Pharlap Operating System can be used, but modifications are required. Both of these 32-bit compilers run in protected mode, making use of extended memory to exceed the 640 Kbyte limit of MS-DOS necessary for full support of EGS4; and, therefore, require their respective memory manager operating systems.

CCC-0331/07
The Unix Version 3.0 of EGS4 was installed, compiled and the sample problems executed in the following systems and using  the following compilers: 1) DEC 3000 Model 300X (Alpha architecture  workstation) under DEC OSF/1 V3.2, using the DEC Fortran compiler V3.4 2) Sun Solaris (UNIX System V Release 4.0 (psisun)) under SunOS 5.3, using the FORTRAN 3.0 compiler from SUNPro

CCC-0331/08
The PC Version 3.1 of EGS4 was installed, compiled and the sample problems executed in a PC DELL Optiplex GXPRO equipped with a Pentium PRO processor at 200 MHz, total memory 64 MByte, under Windows NT 4.00 (execution under DOS). The Lahey Fortran-77 compiler F77L/EM-32
Version 5.20 and linker (Version 5.1) were used for the compilation and creation of the PC-executables.
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15. NAME AND ESTABLISHMENT OF AUTHORS

Contributed by: Radiation Safety Information Computational Center
                Oak Ridge National Laboratory, Oak Ridge, TN, USA

 

Developed by: Radiation Physics Group
              Stanford Linear Accelerator Center
              Stanford University, Stanford, CA

 

              National Laboratory for High Energy Physics (KEK)
              Oho-machi, Tsu-kuba-gun, Ibaraki-ken, Japan

 

              National Research Council of Canada, Ottawa, Canada

 

              Institute for Applied Physiology and Medicine, Seattle, WA, USA

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16. MATERIAL AVAILABLE
CCC-0331/08
egs4pc31.zip Zip-compressed archive file
egs4pc31.zip Zip-compressed archive file
egs4pc31.zip Zip-compressed archive file
CCC-0331/07
File name File description Records
CCC0331_07.001 Information file of package EGS4 (UNIX V3.0) 1826
CCC0331_07.002 Script for EGS4 installation 742
CCC0331_07.003 Tar file with the EGS4 package files 0
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17. CATEGORIES
  • J. Gamma Heating and Shield Design

Keywords: Monte Carlo method, bremsstrahlung, charged particles, charged-particle transport, electrons, high-energy reactions, nuclear cascades, photon transport, shielding.

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