CCC-0638 TART2005.

1. NAME OR DESIGNATION OF PROGRAM:  TART2005.

3. DESCRIPTION OF PROGRAM OR FUNCTION

TART2005 is a coupled neutron-photon Monte Carlo transport code designed to use three dimensional (3-D) combinatorial geometry. Neutron and/or photon sources as well as neutron induced photon production can be tracked. It is a complete system to assist you with input preparation, running Monte Carlo calculations, and analysis of output results. TART2005 is also incredibly FAST; if you have used similar codes, you will be amazed at how fast this code is compared to other similar codes. Use of the entire system can save you a great deal of time and energy.
  
TART2005 extends the general utility of the code to even more areas of application than available in previous releases by concentrating on improving the physics, particularly with regard to improved treatment of neutron fission, resonance self-shielding, molecular binding, and extending input options used by the code.  Several utilities are included for creating input files and displaying TART results and data.
  
TART2005 uses the latest ENDF/B-VI, Release 8, data. New for TART2005 is the use of continuous energy neutron cross sections, in addition to its traditional multigroup cross sections. For neutron interaction, the data are derived using ENDF-ENDL2005 and include both continuous energy cross sections and 700 group neutron data derived using a combination of ENDF/B-VI, Release 8, and ENDL data. The 700 group structure extends from 10-5 eV up to 1 GeV. Presently nuclear data are only available up to 20 MeV, so that only 616 of the groups are currently used. For photon interaction, 701 point photon data were derived using the Livermore EPDL97 file. The new 701 point structure extends from 100 eV up to 1 GeV, and is currently used over this entire energy range.
  
TART2005 completely supersedes all older versions of TART, and it is strongly recommended that one use only the most recent version of TART2005 and its data files. Check author's homepage for related information: http://www.llnl.gov/cullen1/.

4. METHOD OF SOLUTION

Monte Carlo radiation transport of neutrons and/or photons.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:  None noted.

6. TYPICAL RUNNING TIME

The TART2005 example of 68 problems required a total of 47 seconds (less than one seconds per problem) on an AMD 3500+ running Windows.  For a complete list of running times on a variety of computers, see the TART documentation as well as the website, http://www.llnl.gov/cullen1/speed.htm

7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM

8. RELATED AND AUXILIARY PROGRAMS

Auxiliary Codes:
TARTCHEK: Check TART input and Display TART Results
TARTAID: Create TART input
EPICSHOW: Display Atomic and Nuclear data used by TART
PLOTTAB: General Plotting Code to Display TART output
EDITOR: Text editor for use with TART
UTILITY: A collection of useful codes

Data Libraries:
TARTND: Neutron interaction data
TARTPPD: Neutron induced photon production data
GAMDAT: Photon interaction data
NEWCROSS: Neutron self-shielding, multi-band parameter data
NEUTRON: Neutron continuous energy cross sections

10. REFERENCES

References for data in this package are available on the author's website:
  
- D.E. Cullen., 'A Temperature Dependent ENDF/B-VI, Release 8 Cross Section Library,' UCRL-ID-127776, Rev. 2 (May 22, 2003). This document is distributed with the DLC-218/POINT2003 package.
  
- D.E.Cullen, 'POINT 2004: A Temperature Dependent  ENDF/B-VI, Release 8 Cross Section Library,' Lawrence Livermore National Laboratory, UCRL-TR-202284, April 2004.

- D. E. Cullen:
TART2005 - A Coupled Neutron-Photon 3-D, Combinatorial Geometry, Time Dependent
Monte Carlo Transport Code, UCRL-SM-218009 (Nov.22, 2005)

11. MACHINE REQUIREMENTS

TART2005 runs on IBM-PC (Windows and Linux), Cray, Unix workstations (Sun, IBM RS/6000, DEC-Alpha, etc.), and Power MAC. It is written in such standard Fortran that it should be relatively easy to implement and use on any computer.

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED

TART2005 is designed to run on any computer. It is presently implemented various Unix workstations, IBM-PC (Windows and Linux), Cray, and Power MAC.  For use on IBM-PC and Power MAC, the entire system is distributed in executable form, so that no compiler or loader is required on these systems.  Since executables are distributed for these computers, Fortran source code is not included.  The ABSOFT Fortran compiler was used to create included executables for Windows, which run under 32-bit systems. The Intel 9.1 compiler was used to create executables on a 32-bit Red Hat Linux system; these executables were also tested on 64-bit Opterons running RHEL 4. On all other computers, a Fortran compiler which supports Cray-like pointers is required. In addition, on Unix workstations the graphics portion of the system requires a C compiler.

15. NAME AND ESTABLISHMENT OF AUTHORS

Contributed by:
                Radiation Safety Information Computational Center
                Oak Ridge National Laboratory
                Oak Ridge, Tennessee, U. S. A.

Developed by:
                Dermott E. Cullen
                Lawrence Livermore National Laboratory,
                Livermore, California, U.S.A.

Fortran and C source codes for Unix
Scripts and makefiles for Unix systems
Executables for Windows and Linux PC
ASCII and binary data files
Test cases
Documentation