CCC-0467: ITS, TIGER System of Coupled Electron Photon Transport by Monte-Carlo

Program-name Package-ID Status ITS CCC-0467/01 Obsolete ITS-2.0 CCC-0467/02 Obsolete ITS-2.1 CCC-0467/03 Obsolete ITS-2.1 CCC-0467/04 Obsolete ITS-3.0 CCC-0467/05 Obsolete ITS-3.0 CCC-0467/06 Obsolete ITS-3.0 CCC-0467/07 Tested ITS-3.0 CCC-0467/08 Obsolete ITS-3.0 CCC-0467/09 Tested

Machines used: Package-ID Orig.Computer Test Computer CCC-0467/07 Many Computers DEC VAX 6000 CCC-0467/09 PC-80486 PC Pentium 75

3. DESCRIPTION OF PROGRAM OR FUNCTION - ITS permits a state-of-the-art Monte Carlo solution of linear time-integrated coupled electron/ photon radiation transport problems with or without the presence of macroscopic electric and magnetic fields of arbitrary spatial dependence.

4. METHOD OF SOLUTION - Through a machine-portable utility that emulates the basic features of the CDC UPDATE processor, the user selects one of eight codes for running on a machine of one of four (at least) major vendors. With the ITS-3.0 release the PSR-0245/UPEML package is included to perform these functions. The ease with which this utility is applied combines with an input scheme based on order-independent descriptive keywords that makes maximum use of defaults and internal error checking to provide experimentalists and theorists alike with a method for the routine but rigorous solution of sophisticated radiation transport problems. Physical rigor is maximized by employing the best available cross sections and sampling distributions, and the most complete physical model for describing the production and transport of the electron/ photon cascade from 1.0 GeV down to 1.0 keV. Flexibility of construction permits the codes to be tailored to specific applications and the capabilities of the codes to be extended to more complex applications through update procedures.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM - Restrictions and/or limitations for ITS depend upon the local operating system.

6. TYPICAL RUNNING TIME -
With the supplied sample problems, the following lists the CPU time on the IBM 3033: TIGER 9 minutes; TIGERP 11 minutes; TIGERPH 3 minutes; CYLTRAN 12 minutes; CYLTRANM1 12 minutes; CYLTRANM2 13 minutes; CYLTRANP 14 minutes; ACCEPT 16 minutes; ACCEPTH 3 minutes; ACCEPTM 18 minutes; ACCEPTP 17 minutes;

CCC-0467/09:

The cross-section generating programs XGEN & XGENP and the sample problems of the ITS modules were executed at the NEA/DB in a PC-Brett, Pentium processor of 75 MHz with base memory 640 Kbyte and extended memory 16 MByte. The execution times are displayed in the following table.
                ----------------------------------------
                |   ITS Module name  | EXECUTION TIMES |
                |                    |------------------
                |                    |   10K stories   |
                |---------------------------------------
                |      TIGER         |       528       |
                |      TIGERP        |       701       |
                |      CYLTRAN       |       766       |
                |      CYLTRANP      |       851       |
                |      CYLTRANM      |       800       |
                |      ACCEPT        |      1015       |
                |      ACCEPTP       |      1159       |
                |      ACCEPTM       |      1185       |
                |---------------------------------------
The 10,000 history sample problems required the following times on an 80486DX-33 PC (history tracking only -- excludes the time spent loading code and data) are:
                 Code     Seconds     Minutes
                --------  -------     -------
                TIGER       2222       37.0
                TIGERP      2663       44.4
                CYLTRAN     3083       51.4
                CYLTRANP    3374       56.2
                ACCEPT      3916       65.3
                ACCEPTP     4178       69.6
                CYLTRANM    3058       51.0
                ACCEPTM     4944       82.4
                TIGERPH      616       10.3
                ACCEPTPH    1022       17.0
                CYLTRNM2    4300       71.7
The run times for an 80386DX-20 PC (with coprocessor) would be about five times longer. The run times reported by RSICfor an IBM 3033 mainframe are about a factor of four less.

7. UNUSUAL FEATURES OF THE PROGRAM -

9. STATUS
CCC-0467/01: 28-APR-1988 Obsolete
CCC-0467/02: 02-SEP-1988 Obsolete
CCC-0467/03: 12-FEB-1993 Obsolete
CCC-0467/04: 12-JAN-1993 Obsolete
CCC-0467/05: 22-FEB-1994 Obsolete
CCC-0467/06: 22-FEB-1994 Obsolete
CCC-0467/07: 03-FEB-1994 Screened
CCC-0467/08: 19-JAN-1996 Obsolete
CCC-0467/09: 05-FEB-1996 Tested at NEADB

10. REFERENCES  -
- G.T. Mei:
  Beta/Gamma Test Problems for ITS (Integrated Tiger Series)
  CONF-9304128--8 (1993)
  (Availability: INIS; OSTI as DE93013522; NTIS; US Govt. Printing
  Office Dep.)
- S. Brassier:
  Parallelisation de codes de transport de particules de type Monte   Carlo
  Rapport de Stage de D.E.A. de Mathematiques Appliquees
  CISI/RSO/DSS/94T024, CISI/STAGE/RS/005 V1.0 (15 Juin 1994).
CCC-0467/07:
  (October 28, 1993).
- J.A. Halbleib and al:
  ITS Version 3.0: The Integrated TIGER Series of Coupled Electron/
  Photon Monte Carlo Transport Codes
  SAND91-1634 (March 1992).
- B.L. Kirk:
  IBM User's Guide to CCC-467/ITS Version 2.1
  Informal Report (February 1988).
- T. Jordan:
  ITS, PC Version, README.EMP
  (September 1992).
- B.L. Kirk:
  README for RISC Workstations
  (April 1992).
- J. Clifford, Titan Corp.:
  Informal Notes, Using the PC Version of ITS
  (February 1994).
- T.A. Mehlhorn and T.A. Haill:
  UPEML Version 3.0: A Machine-Portable CDC Update Emulator
  SAND92-0073, UC-705 (April 1992).
- Enrico Sartori:
  NDB/94/1019 Circular Letter to all Recipients of ITS-3.0
  (13 September, 1994)
- J.A. Halbleib:
  94/L/1033 letter to B. Kirk (12 August, 1994)
- S. Brassier:
  Parellelisation de codes de transport de particules de
  type Monte-Carlo
  CISI/RSO/DSS/94T024, CISI/STAGE/RS/0005 V1.0
  (15 June 1994) (in French)
- J.A. Halbleib, T.A. Mehlhorn and R.P. Kensek:
  Version 2.1 of ITS, Sandia Laboratories Memo
  (December 11, 1987)
- J.A. Halbleib, T.A. Mehlhorn and R.P. Kensek:
  Version 2.0 of ITS, Sandia National Laboratories Memo
  (April 29, 1987)
- J.A. Halbleib and T.A. Mehlhorn:
  ITS; The Integrated TIGER Series of Coupled Electron/
  Photon Monte Carlo Transport Codes
  SAND 84-0573 (November 1984)
- Harwell Subroutine Library Specification:
  Addendum - information on replacement random number
  generator if IMSL not available
  FA01AS (6 February 1981)
- T.A. Mehlhorn:
  Memo to All UPEML Version 2.0 Users
  (January 26, 1988)
- T.A. Mehlhorn and M.F. Young
  UPEML Version 2.0: A Machine-Portable CDC Update Emulator
  SAND87-0679 (August 1987)
CCC-0467/09:
- J.A. Halbleib:
  MTAX Notification Letter
  (October 28, 1993).
- J.A. Halbleib and al:
  ITS Version 3.0: The Integrated TIGER Series of Coupled Electron/
  Photon Monte Carlo Transport Codes
  SAND91-1634 (March 1992).
- B.L. Kirk:
  IBM User's Guide to CCC-467/ITS Version 2.1
  Informal Report (February 1988).
- T. Jordan:
  ITS, PC Version, README.EMP
  (September 1992).
- B.L. Kirk:
  README for RISC Workstations
  (April 1992).
- J. Clifford, Titan Corp.:
  Informal Notes, Using the PC Version of ITS
  (February 1994).
- T.A. Mehlhorn and T.A. Haill:
  UPEML Version 3.0: A Machine-Portable CDC Update Emulator
  SAND92-0073, UC-705 (April 1992).
- Enrico Sartori:
  NDB/94/1019 Circular Letter to all Recipients of ITS-3.0
  (13 September, 1994)
- J.A. Halbleib:
  94/L/1033 letter to B. Kirk (12 August, 1994)
- S. Brassier:
  Parellelisation de codes de transport de particules de
  type Monte-Carlo
  CISI/RSO/DSS/94T024, CISI/STAGE/RS/0005 V1.0
  (15 June 1994) (in French)
- J.A. Halbleib, T.A. Mehlhorn and R.P. Kensek:
  Version 2.1 of ITS, Sandia Laboratories Memo
  (December 11, 1987)
- J.A. Halbleib, T.A. Mehlhorn and R.P. Kensek:
  Version 2.0 of ITS, Sandia National Laboratories Memo
  (April 29, 1987)
- J.A. Halbleib and T.A. Mehlhorn:
  ITS; The Integrated TIGER Series of Coupled Electron/
  Photon Monte Carlo Transport Codes
  SAND 84-0573 (November 1984)
- Harwell Subroutine Library Specification:
  Addendum - information on replacement random number
  generator if IMSL not available
  FA01AS (6 February 1981)
- T.A. Mehlhorn:
  Memo to All UPEML Version 2.0 Users
  (January 26, 1988)
- T.A. Mehlhorn and M.F. Young
  UPEML Version 2.0: A Machine-Portable CDC Update Emulator
  SAND87-0679 (August 1987)

11. MACHINE REQUIREMENTS - ITS is operable on the CRAY, CDC CYBER-76, IBM-3081, VAX, or the CRAY-1 computers. A total of about 9 megabytes of hard disk is needed to install ITS-3.0. The PC package (Version 2.1) includes both DOS and O.S2 versions. The executables for the DOS versions of ITS will run only on an 80836 computer with an 80387 coprocessor and about 4 Mbytes of memory. These versions run in protected mode using a DOS extender. The executables for the O/S2 versions of ITS will run on either 80286 or 80386 under O.S2 and probably require around 4 Mbytes of memory.

CCC-0467/09:

The ITS code package Version 3.0 was installed and run at the NEA/DB on a PC-Brett Pentium processor of 75 MHz with a base memory of 640 Kbyte and extended memory of 16 MByte; the executable files of the ITS modules were created using the Lahey compiler system (Version 5.20) including the stubloading option at linking time. - DISKSPACE REQUIREMENTS: About 30 MByte of hard disk space are required to install all the files and to run the ITS 3.0 code system. This amount includes the OPL (Old Program Library) files for UPEML, the files generated during the compilation of the executables of ALL the ITS module (source files, executable files and other auxiliary files), the binary libraries and the sample input and output files. - The executable files created at the NEA/DB occupy 4.2 MByte of diskspace. - The original executable files occupy 4.9 MByte of diskspace. - The source file of the Monte Carlo program has a filesize of 0.75 MByte. The source file of the cross-section generating program has a filesize of 0.22 MByte; the corresponding OPL files created by the Updata Emulator processor UPEML occupy 1.7 MByte of diskspace. - The ASCII library file XDATA.DAT of electron and photon cross-section data has a filesize of 3.0 MByte; the corresponding binary libraries XGEN.LIB create by XGEN and XGENP coccupy about 1.5 MByte of diskspace. - The output files from the sample problems occupy about 1.6 MByte of diskspace.

12. PROGRAMMING LANGUAGE(S) USED -
CCC-0467/07: FORTRAN-77
CCC-0467/09: FORTRAN-77

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED - A Fortran 77 compiler is required. The IBM PC executables were created using Lahey Fortran Compiler F77L-EM/32 Version 3.0 and run at least twice as fast as the OS/2 versions/ The OS/2 executables were created with the Microsoft Fortran 5.0 and linker.

CCC-0467/09:

The ITS package Version 3.0 was installed and run at the NEA/DB in a PC-Brett (Pentium processor of 75 MHz) running MS-DOS 6.2. The FORTRAN Lahey compiler F77L/EM-32 (Version 5.20) and linker 386LINK (Version 5.1L) were used to compile the source files and create the executables of the ITS modules.

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS -

15. NAME AND ESTABLISHMENT OF AUTHORS -
Developed by:      J.A. Halbleib, T.A. Mehlhorn, M.F. Young
                   Sandia National Laboratories
                   Albuquerque, New Mexico, U. S. A.
Contributed by:    Radiation Shielding Information Center
                   Oak Ridge National Laboratory
                   Oak Ridge, Tennessee, U. S. A.

17. CATEGORIES -

- J. Gamma Heating and Shield Design

Keywords: CYLINDRICAL, ELECTRONS, GAMMA RADIATION, MONTE CARLO METHOD, ONE-DIMENSIONAL, PHOTONS, SHIELDING, SLABS, TRANSPORT